DOC AIRBUS | AMM A320FRigging of the Thrust Reverser System [IAE]
TASK 78-30-00-820-010-A
Rigging of the Thrust Reverser System
This procedure gives the data to rig the thrust reverser system.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 78-30-00-869-052-A ** ON A/C NOT FOR ALL
Subtask 78-30-00-820-050-A ** ON A/C NOT FOR ALL
Subtask 78-30-00-410-065-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:56:09 UTC
Rigging of the Thrust Reverser System
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobThis procedure gives the data to rig the thrust reverser system.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | DRIVE 3-16 IN (0,190 IN - 4,763 MM) - SQUARE |
| No specific | AR | GAGE - FEELER |
| No specific | AR | GAGE - WIRE |
| No specific | 1 | GAGE 0.04 IN. (1.02 MM) |
| No specific | 1 | GAGE 0.07 IN. (1.78 MM) |
| No specific | 1 | GAGE 0.1 IN. (2.54 MM) |
| No specific | 1 | GAGE 0.13 IN. (3.3 MM) |
| No specific | 1 | GAGE 0.16 IN. (4.06 MM) |
| No specific | 1 | GAGE 0.19 IN. (4.83 MM) |
| No specific | 1 | GAGE 45 DAN (100 LBF) - PUSH-PULL |
| No specific | AR | WARNING NOTICE(S) |
| No specific | Torque wrench: range to between 16 and 12 lbf.ft (2.17 and 1.63 m.daN )  | |
| No specific | Torque wrench: range to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ) | |
| No specific | Torque wrench: range to between 85 and 60 lbf.in (0.96 and 0.68 m.daN ) | |
| No specific | Torque wrench: range to between 735 and 645 lbf.in (8.31 and 7.29 m.daN ) | |
| IAE1N20049 | 2 | PIN - LOCKOUT ACTUATOR |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.V01-009) | modeling clay |
| (Material No.V01-039) | putty |
| (Material No.V02-147) | lockwire |
| (Material No.V02-217) | mold release agents |
| (Material No.V04-012) | grease |
| (Material No.V08-026) | locking compound |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 10 | SHIM | AIPC 78-11-11-80-178 |
| 10 | SHIM | AIPC 78-11-11-80-180 |
| 10 | SHIM | AIPC 78-11-11-80-182 |
| 10 | SHIM | AIPC 78-11-11-80-184 |
| 10 | SHIM | AIPC 78-11-11-80-186 |
| 10 | SHIM | AIPC 78-11-11-80-190 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-23-11-911-013-A | General Torque Tightening Techniques |
| TASK 71-13-00-010-010-A | Opening of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-410-010-A | Closing of the Fan Cowls 437AL(447AL),438AR(448AR) |
| TASK 71-13-00-800-011-A | Adjustment of the Fan Cowl Spigots and Bumpers |
| TASK 78-11-11-000-010-A | Removal of the Common Nozzle Assembly |
| TASK 78-11-11-400-010-A | Installation of the Common Nozzle Assembly (CNA) |
| TASK 78-30-00-040-012-A | Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance |
| TASK 78-30-00-040-013-A | Deactivation of the Thrust Reverser System for Flight |
| TASK 78-30-00-440-012-A | Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance |
| TASK 78-30-00-440-013-A | Activation of the Thrust Reverser System for Flight |
| TASK 78-31-00-710-041-A | Operational Test of the Thrust Reverser System with the CFDS |
| TASK 78-31-00-710-041-A-02 | Operational test of the Thrust Reverser without the CFDS and Engine Running |
| TASK 78-31-15-820-010-A | Adjustment of the Lock Indicator Proximity Sensor |
| TASK 78-32-00-010-010-A | Opening of the Thrust Reverser Halves |
| TASK 78-32-00-410-010-A | Closing of the Thrust Reverser Halves |
| TASK 78-32-00-860-010-A | Manual Extension of the Thrust Reverser Translating Sleeves |
| TASK 78-32-00-860-011-A | Manual Retraction of the Thrust Reverser Translating Sleeves |
| TASK 78-32-43-000-010-A | Removal of the C-Duct Locking Actuator |
| TASK 78-32-43-400-010-A | Installation of the C-Duct Locking Actuator |
| TASK 78-32-44-000-010-A | Removal of the Left C-Duct Flexible Synchronous Cables and Tubes |
| TASK 78-32-44-400-010-A | Installation of the Left C-Duct Flexible Synchronous Cables and Tubes |
| TASK 78-32-48-000-010-A | Removal of the C-Duct Non-Locking Actuator |
| TASK 78-32-48-400-010-A | Installation of the C-Duct Non-Locking Actuator |
| TASK 78-32-74-000-010-A | Removal of the Right C-Duct Flexible Synchronous Cables and Tubes |
| TASK 78-32-74-400-010-A | Installation of the Right C-Duct Flexible Synchronous Cables and Tubes |
Paragraph 4A FlowchartSubtask 78-30-00-869-052-A ** ON A/C NOT FOR ALL
A. General
(1) The thrust reverser structure is adjusted to check for correct alignment and load share between the nacelle components and the engine. The thrust-reverser actuation system is rigged to make sure that the positions of the left and right translating sleeves and the hydraulic actuators are synchronized. Incorrect thrust reverser rigging can decrease the service life and/or cause damage to the actuation system and thrust reverser components.
(2) You cannot rig the thrust reverser correctly if the thrust reverser latches and bumpers are not correctly rigged or the track liners are damaged or missing. You must do a check and rig the latches and bumpers and correct track liner defects before you rig the other thrust reverser components.
(3) The Linear Variable Differential Transducer (LVDT) unit in the non-locking (upper) actuator is self-adjusting. If the LVDT adjustment is changed, it will self-adjust at the next full cycle of thrust reverser deploy and stow translation.
(4) No rigging is necessary for the Hydraulic Control Unit (HCU).
(5) Do a check of the adjustment of the fan cowl spigots and bumpers after the rigging of the thrust reverser.
(6) This list gives the usual maintenance actions and rigging checks that you must do to make sure that the thrust reverser rigging was not changed:
Subtask 78-30-00-941-060-A ** ON A/C NOT FOR ALL (1) The thrust reverser structure is adjusted to check for correct alignment and load share between the nacelle components and the engine. The thrust-reverser actuation system is rigged to make sure that the positions of the left and right translating sleeves and the hydraulic actuators are synchronized. Incorrect thrust reverser rigging can decrease the service life and/or cause damage to the actuation system and thrust reverser components.
(2) You cannot rig the thrust reverser correctly if the thrust reverser latches and bumpers are not correctly rigged or the track liners are damaged or missing. You must do a check and rig the latches and bumpers and correct track liner defects before you rig the other thrust reverser components.
(3) The Linear Variable Differential Transducer (LVDT) unit in the non-locking (upper) actuator is self-adjusting. If the LVDT adjustment is changed, it will self-adjust at the next full cycle of thrust reverser deploy and stow translation.
(4) No rigging is necessary for the Hydraulic Control Unit (HCU).
(5) Do a check of the adjustment of the fan cowl spigots and bumpers after the rigging of the thrust reverser.
(6) This list gives the usual maintenance actions and rigging checks that you must do to make sure that the thrust reverser rigging was not changed:
| MAINTENANCE ACTION | RIGGING CHECKS |
|---|---|
| Powerplant installation | Latches Bumpers Compression struts |
| C-duct installation | Translating sleeve Actuators Latches Bumpers Compression struts |
| Translating sleeve installation | Translating sleeve Actuators Translating sleeve aft Double latches Actuator support |
| Flexshafts and tubes Installation | Actuators and flexshafts |
| Track liner installation | Translating sleeve Actuators |
| Common nozzle assembly installation | Translating sleeve aft Double latches Bumpers (load share fitting) |
B. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred five minutes or more before you do this procedure.
(3) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize Full Authority Digital Engine Control (FADEC) 1(2).
Subtask 78-30-00-010-061-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred five minutes or more before you do this procedure.
(3) On overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize Full Authority Digital Engine Control (FADEC) 1(2).
C. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
Subtask 78-30-00-040-057-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
D. Deactivate the Thrust Reverser
4. ProcedureWARNING:
MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
(1) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012). Subtask 78-30-00-820-050-A ** ON A/C NOT FOR ALL
A. Check of the Rigging of the Thrust Reverser Latches and Bumpers
(2) Remove the air cooled air cooler exhaust duct lower segment (Ref. AMM TASK 78-11-11-000-010).
(3) Apply a thin film of grease (Material No.V04-012) to the V-blade, V-groove and latch flag mechanism and all the exposed reverser seals.
(4) Carefully open and close the thrust reverser halves four to five times to seat the V-blade (Ref. AMM TASK 78-32-00-410-010).
(5) Do a check of the thrust-reverser latch closing-forces and adjust if necessary as follows:
(a) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010). Make sure that the shear pins on the translating sleeve aft double latches align with their mating holes. If they do not align, you must adjust the length of the two actuators on the translating sleeve.
(b) Remove the auxiliary latch assembly (take-up device) from its stowed position. To decrease the auxiliary latch to its minimum length, turn the body until it stops at the minimum length.
(c) Hold the crossbar and turn the auxiliary latch body to extend the auxiliary latch from its minimum length until it can engage with the opposite thrust reverser half.
(d) To close the thrust reverser halves, turn the auxiliary latch body until you can engage the thrust reverser latches.
1 V-groove latch (latch no.1)
2 Aft bifurcation latch (latch no.4)
3 Translating sleeve double latches
4 FWD bifurcation latch (latch no.2)
5 Center bifurcation latch (latch no.3).
Adjust the latches as necessary. Use a 5/32 in. hexagonal wrench to turn the latch keeper adjustment nut in a clockwise direction to increase the latch closing force. Turn the latch keeper adjustment nut in a counterclockwise direction to decrease the closing force.
(7) With the latches closed and the closing force adjusted, measure the distance between the faces of the latch housings at latches no. 2, 3 and 4 and the aft translating sleeve double latches. If the distance is not 0.000 in. (0 mm) at each latch location, you must rig the latches and the C-duct bumpers.
If the distance between the faces of the latch housings at latches no. 2, 3 and 4 and the aft translating sleeve double latch is 0.000 in. (0 mm), continue to the next step.
(8) With the latches closed, measure the distance of the gap at BL 100. If the distance of the gap is less than 0.010 in. (0.25 mm) or greater than 0.160 in. (4.06 mm), you must rig the latches and the C-duct bumpers.
If the distance is between 0.010 in. (0.25 mm) and 0.160 in. (4.06 mm), continue to the next step.
(9) Measure the step distance between the aft end of the translating sleeve outer surface and the common nozzle assembly outer surface at 30° intervals. The step must be between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent of the total measurements of the translating sleeve circumference. The step must be between 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference. The step at the top corners must be between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) out of the wind.
If the step distance is not between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent and 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference and between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) out of the wind at the top corners, you must rig the latches and the C-Duct bumpers.
If the step distance is between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent and 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference and between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) at the top corners (on the wing engine only), continue to the next step.
(10) Measure the step distance between the C-duct fixed structure and the common nozzle assembly inner ring at 30° intervals. The step must be between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent of the circumference of the C-duct. The step must be between 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct.
If the step distance is not between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent and 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct, you must rig the latches and the C-duct bumpers.
If the step distance is not between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind at WL 100, you must rig the latches and the C-duct bumpers.
If the step distance is between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent and 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct and is between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind at WL 100, continue to the next step.
(11) Open the thrust reverser halves and re-install the air-cooled air cooler exhaust duct lower segment (Ref. AMM TASK 78-11-11-400-010).
(12) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010). Latch in accordance with step 4A.(5)(f).
Subtask 78-30-00-820-051-A ** ON A/C NOT FOR ALL CAUTION:
ALWAYS DEPLOY THE TWO HOLD-OPEN RODS ON EACH THRUST REVERSER HALF. IF ONLY ONE HOLD-OPEN ROD SUPPORTS THE THRUST REVERSER HALF, DAMAGE CAN OCCUR.
CAUTION:
ALWAYS USE THE AUXILIARY LATCH (TAKE-UP DEVICE) TO OPEN AND CLOSE THE THRUST REVERSER HALVES. IF YOU DO NOT USE THE AUXILIARY LATCH (TAKE-UP DEVICE) EACH TIME YOU OPEN OR CLOSE THE THRUST REVERSER HALVES, DAMAGE CAN OCCUR.
(1) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010). (2) Remove the air cooled air cooler exhaust duct lower segment (Ref. AMM TASK 78-11-11-000-010).
(3) Apply a thin film of grease (Material No.V04-012) to the V-blade, V-groove and latch flag mechanism and all the exposed reverser seals.
(4) Carefully open and close the thrust reverser halves four to five times to seat the V-blade (Ref. AMM TASK 78-32-00-410-010).
(5) Do a check of the thrust-reverser latch closing-forces and adjust if necessary as follows:
(a) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010). Make sure that the shear pins on the translating sleeve aft double latches align with their mating holes. If they do not align, you must adjust the length of the two actuators on the translating sleeve.
(b) Remove the auxiliary latch assembly (take-up device) from its stowed position. To decrease the auxiliary latch to its minimum length, turn the body until it stops at the minimum length.
(c) Hold the crossbar and turn the auxiliary latch body to extend the auxiliary latch from its minimum length until it can engage with the opposite thrust reverser half.
(d) To close the thrust reverser halves, turn the auxiliary latch body until you can engage the thrust reverser latches.
CAUTION:
DO NOT ENGAGE THE TRANSLATING SLEEVE DOUBLE LATCHES FIRST. IF YOU DO, DAMAGE TO THE TRANSLATING SLEEVE COMPOSITE STRUCTURE CAN OCCUR.
(e) Engage the latches but do not attach them. If it is not possible to engage all of the latches, adjust the keepers until the latch can be engaged. CAUTION:
ALWAYS CLOSE THE LATCHES IN THE SEQUENCE GIVEN IN THIS STEP. ALWAYS OPEN THE LATCHES IN THE EXACT OPPOSITE SEQUENCE. DAMAGE CAN OCCUR TO THE THRUST REVERSER IF YOU DO NOT OBEY THIS SEQUENCE EACH TIME YOU OPEN OR CLOSE THE THRUST REVERSER.
(f) Use the GAGE 45 DAN (100 LBF) - PUSH-PULL to measure the closing force at each latch. The closing force at each latch must be between 45 lbf (20.0 daN) to 55 lbf (24.5 daN). Close the latches and do a check of the closing force of each latch in this sequence: 1 V-groove latch (latch no.1)
2 Aft bifurcation latch (latch no.4)
3 Translating sleeve double latches
4 FWD bifurcation latch (latch no.2)
5 Center bifurcation latch (latch no.3).
Adjust the latches as necessary. Use a 5/32 in. hexagonal wrench to turn the latch keeper adjustment nut in a clockwise direction to increase the latch closing force. Turn the latch keeper adjustment nut in a counterclockwise direction to decrease the closing force.
NOTE: If the no.1 V-groove latch is difficult to engage, it is acceptable to engage the no.2. fwd bifurcation latch first, then engage the no.1 latch. If the no.1 latch is still difficult to engage, adjust the latch keeper until it can be latched correctly.
NOTE: If it is not possible to engage the latches, adjust the latch keepers until it is possible to engage the latches.
(6) Measure the closing force at the tip of the latch handle and with all other latches engaged at the final closing force. It can be necessary to do the procedure again and again until the closing forces are correct for all the latches. (7) With the latches closed and the closing force adjusted, measure the distance between the faces of the latch housings at latches no. 2, 3 and 4 and the aft translating sleeve double latches. If the distance is not 0.000 in. (0 mm) at each latch location, you must rig the latches and the C-duct bumpers.
If the distance between the faces of the latch housings at latches no. 2, 3 and 4 and the aft translating sleeve double latch is 0.000 in. (0 mm), continue to the next step.
(8) With the latches closed, measure the distance of the gap at BL 100. If the distance of the gap is less than 0.010 in. (0.25 mm) or greater than 0.160 in. (4.06 mm), you must rig the latches and the C-duct bumpers.
If the distance is between 0.010 in. (0.25 mm) and 0.160 in. (4.06 mm), continue to the next step.
(9) Measure the step distance between the aft end of the translating sleeve outer surface and the common nozzle assembly outer surface at 30° intervals. The step must be between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent of the total measurements of the translating sleeve circumference. The step must be between 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference. The step at the top corners must be between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) out of the wind.
If the step distance is not between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent and 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference and between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) out of the wind at the top corners, you must rig the latches and the C-Duct bumpers.
If the step distance is between 0.055 in. (1.40 mm) and 0.175 in. (4.44 mm) out of the wind for 60 percent and 0.000 in. (0 mm) and 0.235 in. (5.97 mm) for 40 percent of the translating sleeve circumference and between 0.000 in. (0 mm) and 0.256 in. (6.50 mm) at the top corners (on the wing engine only), continue to the next step.
(10) Measure the step distance between the C-duct fixed structure and the common nozzle assembly inner ring at 30° intervals. The step must be between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent of the circumference of the C-duct. The step must be between 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct.
If the step distance is not between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent and 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct, you must rig the latches and the C-duct bumpers.
If the step distance is not between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind at WL 100, you must rig the latches and the C-duct bumpers.
If the step distance is between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind for 80 percent and 0.015 in. (0.38 mm) and 0.265 in. (6.73 mm) out of the wind for 20 percent of the circumference of the C-duct and is between 0.035 in. (0.89 mm) and 0.245 in. (6.22 mm) out of the wind at WL 100, continue to the next step.
(11) Open the thrust reverser halves and re-install the air-cooled air cooler exhaust duct lower segment (Ref. AMM TASK 78-11-11-400-010).
(12) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010). Latch in accordance with step 4A.(5)(f).
B. Rig the Thrust Reverser Latches and Bumpers
(2) Remove the lower segment of the air-cooled air-cooler exhaust-duct (Ref. AMM TASK 78-11-11-000-010).
(3) Remove all the shims from all the lower bumpers and the upper forward bumper on the Left Hand (LH) thrust reverser half. Put identification marks on the shims to relate them to the bumper they were removed from.
(4) Do an inspection of the lower bumper and the upper-forward bumper shims on the Right Hand (RH) thrust reverser half:
(a) If the shim is less than 0.120 in. (3.05 mm) thick, remove the shim and replace it with a new shim.
(b) Do not remove the shims on the RH thrust reverser that are riveted to the bumpers if they are thicker than 0.120 in. (3.05 mm).
(5) Remove the LH and the RH radial bumpers and shims. Put identification marks on the shims to relate them to the bumper that they were removed from.
(6) Install the radial bumpers.
(7) Remove all the shims from the translating-sleeve double-latch housings:
(a) Put identification marks on the shims to relate them to the latch that they were removed from.
(b) Do not remove the shims from the bifurcation latches (latches no. 2, 3 and 4).
(8) Remove all the shims from the load share fitting.
(9) Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the face of the LH thrust-reverser upper-forward-bumper. Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the radial bumpers. Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the load share fitting surfaces where the shims were removed.
(10) Apply mold release agents (Material No.V02-217) on the bumper faces on the RH thrust-reverser upper-forward-bumper. Apply mold release agents (Material No.V02-217) on the radial-bumper pandown surface on the translating sleeve. Apply mold release agents (Material No.V02-217) on the load-share fitting surfaces that are opposite the removed shims.
(a) There are two types of upper bumpers for the compression struts. These bumpers are fully interchangeable. Thus, there can be up to three combinations of compression strut bumpers. Refer to
for a description of each configuration and the related compression strut lengths. The rigging procedure and the gaps are the same for all the configurations.
(12) With the compression struts positioned correctly on the pylon hangers, apply a 0.059 in. (1.50 mm) diameter solder wire (industry standard) to one end of each compression strut.
(13) Close the thrust reverser halves and engage the latches. Refer to paragraph 4.A.(5)(f) (Ref. AMM TASK 78-32-00-410-010).
(14) With the thrust reverser halves closed and correctly latched, measure the gap between the faces of all the latch housings. The gap between the faces of the latch housings must be 0.0 in. (0.0 mm). Install shims that have the correct size if the gap is more than 0.0 in. (0.0 mm).
(16) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010).
(17) Measure the thickness of the compressed solder on the compression struts. The thickness of the compressed solder must be between 0.005 in. (0.13 mm) and 0.030 in. (0.76 mm). Adjust the length of the compression struts to get the correct thickness.
(19) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the upper forward bumper and the lower bumpers. Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for each bumper location. The correct clearance for the thrust reverser upper-forward bumper must be 0.002 in. (0.05 mm) and 0.050 in. (1.27 mm) and the lower bumpers must be 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
PRE SB 78-0242
(21) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the load share fitting:
(a) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for each bumper location on the left and the right C-duct load-share bumper-fittings. The correct clearances between the left and the right C-duct load-share bumpers must be between 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
(b) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for both bumper locations on the lower-common-nozzle-assembly load-share bumper-fitting. The correct clearances between the lower lower-common-nozzle-assembly load-share bumpers and the left and the right C-duct load share bumper fittings must be between 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
(c) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for both bumper locations on the upper-common-nozzle-assembly load-share bumper-fitting. The correct clearance between the upper-common-nozzle-assembly load-share bumpers and the left and the right C-duct load-share bumper-fittings must be 0.0 in. (0.0 mm).
END of PRE SB 78-0242
POST SB 78-0242
(22) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the load share fitting. For correct clearance refer to:
(a) Assemble a replacement shim pack with equal thickness of the solid AIPC 78-11-11-80-178 SHIM (10) or AIPC 78-11-11-80-180 SHIM (10) or AIPC 78-11-11-80-182 SHIM (10) or AIPC 78-11-11-80-184 SHIM (10) or AIPC 78-11-11-80-186 SHIM (10) and peelable AIPC 78-11-11-80-190 SHIM (10) to get the full correct thickness:
2 You can use more than one solid AIPC 78-11-11-80-178 SHIM (10) or AIPC 78-11-11-80-180 SHIM (10) or AIPC 78-11-11-80-182 SHIM (10) or AIPC 78-11-11-80-184 SHIM (10) or AIPC 78-11-11-80-186 SHIM (10) to use less of the laminated shims.
3 Use laminated shims to make up for the difference between the thickness of the solid shims and the thickness measured in step 4.B.(18) or 0.362 in. (9.19 mm).
END of POST SB 78-0242
(23) Remove the putty (Material No.V01-039) (Play-Doh) and the solder from the thrust-reverser bumper locations and the compression struts.
(24) Install the shims in the applicable locations on the lower bumpers, the upper forward bumper and the load share bumper.
(25) Apply locking compound (Material No.V08-026) (industry standard) on the threads of the fasteners.
(26) Install the washers and the nuts:
(a) TORQUE the nuts to between 35 and 30 lbf.in (0.40 and 0.34 m.daN ).
(27) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010).
(28) Do a check of the rigging of the thrust reverser latches and bumpers as given in Para. 4.A.
Subtask 78-30-00-820-052-A ** ON A/C NOT FOR ALL NOTE: For the initial acceptance of a new reverser, measure all the bumper gaps with feeler gages. If all the gaps are in the approved tolerance range for the initial acceptance, no rigging is necessary.
(1) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010). (2) Remove the lower segment of the air-cooled air-cooler exhaust-duct (Ref. AMM TASK 78-11-11-000-010).
(3) Remove all the shims from all the lower bumpers and the upper forward bumper on the Left Hand (LH) thrust reverser half. Put identification marks on the shims to relate them to the bumper they were removed from.
(4) Do an inspection of the lower bumper and the upper-forward bumper shims on the Right Hand (RH) thrust reverser half:
(a) If the shim is less than 0.120 in. (3.05 mm) thick, remove the shim and replace it with a new shim.
(b) Do not remove the shims on the RH thrust reverser that are riveted to the bumpers if they are thicker than 0.120 in. (3.05 mm).
(5) Remove the LH and the RH radial bumpers and shims. Put identification marks on the shims to relate them to the bumper that they were removed from.
(6) Install the radial bumpers.
(7) Remove all the shims from the translating-sleeve double-latch housings:
(a) Put identification marks on the shims to relate them to the latch that they were removed from.
(b) Do not remove the shims from the bifurcation latches (latches no. 2, 3 and 4).
(8) Remove all the shims from the load share fitting.
(9) Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the face of the LH thrust-reverser upper-forward-bumper. Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the radial bumpers. Apply modeling clay (Material No.V01-009) or putty (Material No.V01-039) (Play-Doh) on the load share fitting surfaces where the shims were removed.
(10) Apply mold release agents (Material No.V02-217) on the bumper faces on the RH thrust-reverser upper-forward-bumper. Apply mold release agents (Material No.V02-217) on the radial-bumper pandown surface on the translating sleeve. Apply mold release agents (Material No.V02-217) on the load-share fitting surfaces that are opposite the removed shims.
NOTE: The latch housing gaps (distances) and the lower bumper gaps can be measured with feeler gages or similar tools. The use of putty (Material No.V01-039) (Play-Doh) in these locations is optional.
(11) Make sure that the compression strut lengths are within the limits: (a) There are two types of upper bumpers for the compression struts. These bumpers are fully interchangeable. Thus, there can be up to three combinations of compression strut bumpers. Refer to
for a description of each configuration and the related compression strut lengths. The rigging procedure and the gaps are the same for all the configurations.
(12) With the compression struts positioned correctly on the pylon hangers, apply a 0.059 in. (1.50 mm) diameter solder wire (industry standard) to one end of each compression strut.
(13) Close the thrust reverser halves and engage the latches. Refer to paragraph 4.A.(5)(f) (Ref. AMM TASK 78-32-00-410-010).
(14) With the thrust reverser halves closed and correctly latched, measure the gap between the faces of all the latch housings. The gap between the faces of the latch housings must be 0.0 in. (0.0 mm). Install shims that have the correct size if the gap is more than 0.0 in. (0.0 mm).
NOTE: If the gap is measured with putty (Material No.V01-039) (Play-Doh), apply mold release agents per step 4.B.(10).
(15) With feeler gages, measure the distance between the lower bumper shims at five locations. If putty (Material No.V01-039) (Play-Doh) was used in one of the five lower bumper locations, it is not necessary to measure the distance with the feeler gage. Make a note of the measured distances for each bumper location. (16) Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010).
(17) Measure the thickness of the compressed solder on the compression struts. The thickness of the compressed solder must be between 0.005 in. (0.13 mm) and 0.030 in. (0.76 mm). Adjust the length of the compression struts to get the correct thickness.
NOTE: One full turn (one 360° rotation) of the compression strut will adjust the length by 0.056 in. (1.42 mm).
NOTE: It can be necessary to replace the solder in step 4.B.(12) and do a check of the distance of the compressed solder more than one time. While the thrust reverser halves are open, do a check of the clay thickness on the other bumper surfaces before you close the thrust reverser and do this step again.
(18) Measure the thickness of the putty (Material No.V01-039) (Play-Doh) on the upper forward bumper, the radial bumpers and the load share fitting. (19) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the upper forward bumper and the lower bumpers. Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for each bumper location. The correct clearance for the thrust reverser upper-forward bumper must be 0.002 in. (0.05 mm) and 0.050 in. (1.27 mm) and the lower bumpers must be 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
NOTE: If the shims that were removed in step 4.B.(3) are of the correct thickness, they can be installed again.
(20) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the radial bumper. Add the correct number and thickness of the shims to get the correct clearance for each bumper location. The correct clearance between the thrust reverser radial bumpers and the translating sleeve engine bumper pandown must be between 0.050 in. (1.27 mm) and 0.080 in. (2.03 mm). NOTE: If the shims that were removed in step 4.B.(3) are of the correct thickness, they can be installed again.
PRE SB 78-0242
(21) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the load share fitting:
(a) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for each bumper location on the left and the right C-duct load-share bumper-fittings. The correct clearances between the left and the right C-duct load-share bumpers must be between 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
(b) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for both bumper locations on the lower-common-nozzle-assembly load-share bumper-fitting. The correct clearances between the lower lower-common-nozzle-assembly load-share bumpers and the left and the right C-duct load share bumper fittings must be between 0.002 in. (0.05 mm) and 0.040 in. (1.02 mm).
(c) Peel the 0.003 in. (0.08 mm) thick layers from the laminated side of the shims to get the correct thickness for both bumper locations on the upper-common-nozzle-assembly load-share bumper-fitting. The correct clearance between the upper-common-nozzle-assembly load-share bumpers and the left and the right C-duct load-share bumper-fittings must be 0.0 in. (0.0 mm).
NOTE: If the shims that were removed in step 4.B.(3) are of the correct thickness, they can be installed again.
END of PRE SB 78-0242
POST SB 78-0242
(22) Subtract the correct clearance from the thickness of the putty (Material No.V01-039) (Play-Doh) to calculate the thickness of the new shims for the load share fitting. For correct clearance refer to:
(a) Assemble a replacement shim pack with equal thickness of the solid AIPC 78-11-11-80-178 SHIM (10) or AIPC 78-11-11-80-180 SHIM (10) or AIPC 78-11-11-80-182 SHIM (10) or AIPC 78-11-11-80-184 SHIM (10) or AIPC 78-11-11-80-186 SHIM (10) and peelable AIPC 78-11-11-80-190 SHIM (10) to get the full correct thickness:
CAUTION:
THE MAXIMUM SHIM THICKNESS MAY NOT EXCEED 0.362 IN (9.19 MM) IN ANY LOCATION.
1 Use the thickest AIPC 78-11-11-80-178 SHIM (10) or AIPC 78-11-11-80-180 SHIM (10) or AIPC 78-11-11-80-182 SHIM (10) or AIPC 78-11-11-80-184 SHIM (10) or AIPC 78-11-11-80-186 SHIM (10) available but do not increase to more than the thickness measured in step 4.B.(18) and do not increase to more than 0.362 in. (9.19 mm).2 You can use more than one solid AIPC 78-11-11-80-178 SHIM (10) or AIPC 78-11-11-80-180 SHIM (10) or AIPC 78-11-11-80-182 SHIM (10) or AIPC 78-11-11-80-184 SHIM (10) or AIPC 78-11-11-80-186 SHIM (10) to use less of the laminated shims.
3 Use laminated shims to make up for the difference between the thickness of the solid shims and the thickness measured in step 4.B.(18) or 0.362 in. (9.19 mm).
END of POST SB 78-0242
(23) Remove the putty (Material No.V01-039) (Play-Doh) and the solder from the thrust-reverser bumper locations and the compression struts.
(24) Install the shims in the applicable locations on the lower bumpers, the upper forward bumper and the load share bumper.
(25) Apply locking compound (Material No.V08-026) (industry standard) on the threads of the fasteners.
(26) Install the washers and the nuts:
(a) TORQUE the nuts to between 35 and 30 lbf.in (0.40 and 0.34 m.daN )
.(27) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010).
(28) Do a check of the rigging of the thrust reverser latches and bumpers as given in Para. 4.A.
C. Rigging of the Thrust Reverser Translating Sleeve and the Actuators:
(1) Open the thrust reverser halves sufficiently to separate the shear pins from the translating sleeve double latches (Ref. AMM TASK 78-32-00-010-010).
(2) Temporarily remove the thrust-reverser crossover flexshaft (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
(3) Temporarily install the thrust-reverser crossover flexshaft-hose without the crossover flexshaft (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(a) You must install the crossover flexshaft before you return the aircraft to service.
(4) Manually extend (deploy) the translating sleeves approximately between 2 in. (50.80 mm) and 3 in. (76.20 mm) from the fully stowed position so they are away from the stow seals (Ref. AMM TASK 78-32-00-860-010).
(5) Remove the actuator-rod end-to-translating sleeve-attach-bolts.
(6) Move the translating sleeve aft until the actuator rod ends are away from the translating sleeve-mounting brackets.
(7) Do a check of the actuator and the flexshaft rigging:
(b) Make sure that the locking actuator lock lever moves forward to the locked position.
1 If the lock lever does not move to the locked position you must rig the locking actuator and the flexshaft between the locking and non-locking actuators as follows:
a Remove the deploy tube and the flexshaft between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
b Turn the manual drive in the stow direction until the locking actuator lock lever moves forward to the locked position.
c Install the flexshaft and the deploy tube between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(c) On the non-locking actuator, measure the distance between the actuator end collar and the lock nut (dimension A).
1 If the distance is more than 1.3 in. (33.02 mm), you must rig the non-locking actuator and the flexshaft between the locking and non-locking actuators as follows:
a Remove the deploy tube and the flexshaft between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
b Use the DRIVE 3-16 IN (0,190 IN - 4,763 MM) - SQUARE in the flexshaft socket to turn the non-locking actuator in the stow direction until the non-locking actuator bottoms out and is in contact with the internal stop.
c Install the flexshaft and the deploy tube between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(d) Manually unlock the locking actuator.
(e) Hold the actuator rod ends so they cannot turn and operate the manual drive in the deploy direction until the actuators are between 2 in. (50.80 mm) and 3 in. (76.20 mm) from the fully stowed position.
(f) Move the translating sleeve forward until one or the two actuator rod ends can be put in the mounting brackets. If only one actuator rod end can be put in the mounting brackets, you must adjust the other rod end. If the rods cannot be engaged, adjust the actuators as follows:
1 Adjust the locking and the non-locking actuators.
b To increase the length of the actuator, turn the rod end counterclockwise.
c To decrease the length of the actuator, turn the rod end clockwise.
Make sure that the locking tang is engaged in the piston rod notch.
2 Attach the locking and the non-locking actuators to the translating sleeve.
a Attach the non-locking actuator to the translating sleeve with the bushing and the bolt.
a The distance between each pair of master gage points must be 1.50 in. (38.10 mm).
b If the distance between each pair of master gage points is not 1.50 in. (38.10 mm), adjust the locking and the non-locking actuators until the distance is correct.
4 TORQUE the rod end locknuts to between 735 and 645 lbf.in (8.31 and 7.29 m.daN ).
6 TORQUE the bolts to between 85 and 60 lbf.in (0.96 and 0.68 m.daN ).
7 Do an operational check of the translating sleeve:
a Manually extend the translating sleeve (Ref. AMM TASK 78-32-00-860-010).
b Manually retract the translating sleeve (Ref. AMM TASK 78-32-00-860-011).
8 Make sure that the lockout pin can be installed when the translating sleeve is fully retracted:
a Remove the plug from the lockout retainer assembly.
b Remove the lockout pin from the pin stowage bracket assembly.
c Install the lockout pin on the lockout retainer assembly:
e Install the lockout pin on the pin stowage bracket assembly.
f Install the plug on the lockout retainer assembly.
(g) Re-install the actuator-rod end on the translating sleeve with the bolts.
(8) Rig the actuator length and the translating sleeve position:
(a) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010).
1 Make sure that the shear pins on the translating-sleeve aft double-latches are aligned with their mating holes.
2 If they are not aligned, you must adjust the length of the both actuators on the same translating sleeve by the same amount as instructed in step 4.C.(7)(f).
(b) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010).
1 If the distance is not between 0.03 in. (0.76 mm) and 0.25 in. (6.35 mm) for 80 percent of the measurements and between 0.03 in. (0.76 mm) and 0.31 in. (7.87 mm) for 20 percent of the measurements, adjust the actuators as necessary as instructed in step 4.C.(7)(f).
1 Make sure that you do not exceed this limit.
a When you turn the rod end, hold one end of the piston rod to make sure that it will not turn.
Subtask 78-30-00-820-053-A ** ON A/C NOT FOR ALL (1) Open the thrust reverser halves sufficiently to separate the shear pins from the translating sleeve double latches (Ref. AMM TASK 78-32-00-010-010).
(2) Temporarily remove the thrust-reverser crossover flexshaft (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
(3) Temporarily install the thrust-reverser crossover flexshaft-hose without the crossover flexshaft (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(a) You must install the crossover flexshaft before you return the aircraft to service.
(4) Manually extend (deploy) the translating sleeves approximately between 2 in. (50.80 mm) and 3 in. (76.20 mm) from the fully stowed position so they are away from the stow seals (Ref. AMM TASK 78-32-00-860-010).
(5) Remove the actuator-rod end-to-translating sleeve-attach-bolts.
(6) Move the translating sleeve aft until the actuator rod ends are away from the translating sleeve-mounting brackets.
(7) Do a check of the actuator and the flexshaft rigging:
CAUTION:
MAKE SURE THAT THE ROD ENDS CANNOT TURN. IF THEY TURN, YOU CANNOT RIG THE THRUST REVERSER CORRECTLY.
(a) Hold the actuator rod ends so they cannot turn and operate the manual drive in the stow direction until the actuators are in the fully stowed position. (b) Make sure that the locking actuator lock lever moves forward to the locked position.
1 If the lock lever does not move to the locked position you must rig the locking actuator and the flexshaft between the locking and non-locking actuators as follows:
a Remove the deploy tube and the flexshaft between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
b Turn the manual drive in the stow direction until the locking actuator lock lever moves forward to the locked position.
c Install the flexshaft and the deploy tube between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(c) On the non-locking actuator, measure the distance between the actuator end collar and the lock nut (dimension A).
1 If the distance is more than 1.3 in. (33.02 mm), you must rig the non-locking actuator and the flexshaft between the locking and non-locking actuators as follows:
a Remove the deploy tube and the flexshaft between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-000-010) or (Ref. AMM TASK 78-32-74-000-010).
b Use the DRIVE 3-16 IN (0,190 IN - 4,763 MM) - SQUARE in the flexshaft socket to turn the non-locking actuator in the stow direction until the non-locking actuator bottoms out and is in contact with the internal stop.
c Install the flexshaft and the deploy tube between the locking and non-locking actuators (Ref. AMM TASK 78-32-44-400-010) or (Ref. AMM TASK 78-32-74-400-010).
(d) Manually unlock the locking actuator.
(e) Hold the actuator rod ends so they cannot turn and operate the manual drive in the deploy direction until the actuators are between 2 in. (50.80 mm) and 3 in. (76.20 mm) from the fully stowed position.
(f) Move the translating sleeve forward until one or the two actuator rod ends can be put in the mounting brackets. If only one actuator rod end can be put in the mounting brackets, you must adjust the other rod end. If the rods cannot be engaged, adjust the actuators as follows:
1 Adjust the locking and the non-locking actuators.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
a Remove the lockwire from the locknut near the rod end of the actuator.b To increase the length of the actuator, turn the rod end counterclockwise.
c To decrease the length of the actuator, turn the rod end clockwise.
NOTE: One full turn of the rod end will change the actuator length by 0.056 in. (1.42 mm).
d Engage the rod end lock ring on the actuator.Make sure that the locking tang is engaged in the piston rod notch.
2 Attach the locking and the non-locking actuators to the translating sleeve.
a Attach the non-locking actuator to the translating sleeve with the bushing and the bolt.
- Do not torque the bolt at this time.
- If the alignment of the actuator rod end will not allow the bolt to engage, adjustments may be required in reference to step 4.C.(7)(f)3_.
- Do not torque the bolt at this time.
- If the alignment of the actuator rod end will not allow the bolt to engage, adjustments may be required in reference to step 4.C.(7)(f)3_.
- If the lockout pin cannot be installed, check and adjust the translating sleeve rigging in reference to step 4.C.(7)(f)3_.
- If the lockout pin still cannot be installed, do step 4.C.(7)(f)8_.
a The distance between each pair of master gage points must be 1.50 in. (38.10 mm).
b If the distance between each pair of master gage points is not 1.50 in. (38.10 mm), adjust the locking and the non-locking actuators until the distance is correct.
4 TORQUE the rod end locknuts to between 735 and 645 lbf.in (8.31 and 7.29 m.daN )
.WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
5 Safety the rod end locknuts with the lockwire (Material No.V02-147) . 6 TORQUE the bolts to between 85 and 60 lbf.in (0.96 and 0.68 m.daN )
. 7 Do an operational check of the translating sleeve:
a Manually extend the translating sleeve (Ref. AMM TASK 78-32-00-860-010).
b Manually retract the translating sleeve (Ref. AMM TASK 78-32-00-860-011).
8 Make sure that the lockout pin can be installed when the translating sleeve is fully retracted:
a Remove the plug from the lockout retainer assembly.
b Remove the lockout pin from the pin stowage bracket assembly.
c Install the lockout pin on the lockout retainer assembly:
- Between 0.8 in. (20.32 mm) and 0.86 in. (21.84 mm) of the lockout pin will be above the lockout retainer assembly when the lockout pin is completely installed.
- If the lockout pin cannot be installed, check and adjust the translating sleeve rigging in reference to step 4.C.(7)(f)3_.
- If the lockout pin still cannot be installed, do step 4.C.(7)(f)8_.
e Install the lockout pin on the pin stowage bracket assembly.
f Install the plug on the lockout retainer assembly.
(g) Re-install the actuator-rod end on the translating sleeve with the bolts.
CAUTION:
MAKE SURE THAT THE TWO TRANSLATING SLEEVES ARE STOWED COMPLETELY BEFORE YOU INSTALL THE CROSSOVER SHAFT. IF THEY ARE NOT STOWED COMPLETELY, YOU CANNOT RIG THE THRUST REVERSER CORRECTLY.
(h) Extend (deploy) then completely retract (stow) the two translating sleeves with power (Ref. AMM TASK 78-31-00-710-041). NOTE: Because the translating sleeves are not connected by the latches or the crossover flexshaft, they will not extend and retract at the same time.
(i) Installation of the crossover flexshaft:CAUTION:
DO NOT TURN THE FLEXSHAFT MORE THAN 1/8 TURN WHILE ONE END IS ENGAGED. IF YOU DO NOT, THERE IS A RISK THAT YOU WILL CHANGE THE RIGGING OF THE THRUST REVERSER.
1 Install the crossover flexshafts (Ref. AMM TASK 78-32-44-400-010) and (Ref. AMM TASK 78-32-74-400-010). (8) Rig the actuator length and the translating sleeve position:
(a) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010).
1 Make sure that the shear pins on the translating-sleeve aft double-latches are aligned with their mating holes.
2 If they are not aligned, you must adjust the length of the both actuators on the same translating sleeve by the same amount as instructed in step 4.C.(7)(f).
(b) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010).
CAUTION:
USE THE SAME LENGTH ADJUSTMENT VALUE FOR ALL FOUR ACTUATORS. IF YOU USE DIFFERENT ADJUSTEMENT VALUES:
(c) Measure the distance between the translating-sleeve leading edge and the fan-cowl aft edge:- THE SLEEVE WILL NOT ALIGN WITH THE TRACKS, AND
- THE AFT DOUBLE-LATCH SHEAR-PINS OF THE TRANSLATING SLEEVE WILL NOT ALIGN.
1 If the distance is not between 0.03 in. (0.76 mm) and 0.25 in. (6.35 mm) for 80 percent of the measurements and between 0.03 in. (0.76 mm) and 0.31 in. (7.87 mm) for 20 percent of the measurements, adjust the actuators as necessary as instructed in step 4.C.(7)(f).
NOTE: Adjustment of the actuator rod end will change the actuator length. The actuator rod end can be adjusted by plus or minus 0.25 in. (6.35 mm) from its factory set length.
(d) Make sure that the distance from the face of the locknut to the center of the rod end is equal to or less than 1.6 in. (40.64 mm):1 Make sure that you do not exceed this limit.
a When you turn the rod end, hold one end of the piston rod to make sure that it will not turn.
NOTE: One full turn of the rod end will change the actuator overall length by plus or minus 0.056 in. (1.42 mm). A half turn will change the length by plus or minus 0.028 in. (0.71 mm).
(9) Do a check of the translating sleeve and C-Duct hole alignment. Refer to para 4.G. D. Rig the Actuator Support
(1) Remove the actuator rod-end access-panels (Ref. AMM TASK 78-32-43-000-010) or (Ref. AMM TASK 78-32-48-000-010).
(2) Loosen, but do not remove, the flex tubes, manual drive and rod end connections. This removes the pre-load from the actuators (Ref. AMM TASK 78-32-43-000-010) and (Ref. AMM TASK 78-32-48-000-010).
(3) Remove the upper clamp half and cushion, then install the clamp half without the cushion (Ref. AMM TASK 78-32-43-000-010) and (Ref. AMM TASK 78-32-48-000-010).
(4) Find the location of the largest distance between the actuator end collar and the clamp bracket. Because access is limited, measure the distance between the bracket and the actuator end collar in the upper half of the assembly to find the largest distance. The smallest distance is 180 degrees opposite the location of the largest distance. Use a GAGE - WIRE or drill index as follows:
(a) Put a GAGE 0.1 IN. (2.54 MM) (wire gage or drill index) in the space between the actuator end collar and the bracket. Move the gage through the space in the upper half.
1 If the distance is even (equal) and if the gage fits around the upper half, this shows the distance between the actuator end collar and the clamp bracket is even (equal). Select the cushion as instructed in paragraph (b) and condition 4 of Table 501.
2 If the distance is not even (not equal) in the upper half:
a If the gage does not fit in one location of the upper half (the distance is smaller than the gage), this shows the smallest distance is in the upper half:
(6) Install the cushion in the clamp bracket assembly.
(a) Cut the cushion in half.
(b) Install the cushion. If the cushion is difficult to install, extend (deploy) the translating sleeve and disconnect the actuator rod end from the translating sleeve bracket before you install the cushion.
(7) Tighten the connections of the flex tubes, manual drive, and rod ends then install the upper half of the clamp assembly (Ref. AMM TASK 78-32-43-400-010) and (Ref. AMM TASK 78-32-48-400-010).
(8) Install the actuator rod-end access panels (Ref. AMM TASK 78-32-43-400-010) and (Ref. AMM TASK 78-32-48-400-010).
Subtask 78-30-00-820-054-A ** ON A/C NOT FOR ALL (1) Remove the actuator rod-end access-panels (Ref. AMM TASK 78-32-43-000-010) or (Ref. AMM TASK 78-32-48-000-010).
(2) Loosen, but do not remove, the flex tubes, manual drive and rod end connections. This removes the pre-load from the actuators (Ref. AMM TASK 78-32-43-000-010) and (Ref. AMM TASK 78-32-48-000-010).
(3) Remove the upper clamp half and cushion, then install the clamp half without the cushion (Ref. AMM TASK 78-32-43-000-010) and (Ref. AMM TASK 78-32-48-000-010).
(4) Find the location of the largest distance between the actuator end collar and the clamp bracket. Because access is limited, measure the distance between the bracket and the actuator end collar in the upper half of the assembly to find the largest distance. The smallest distance is 180 degrees opposite the location of the largest distance. Use a GAGE - WIRE or drill index as follows:
(a) Put a GAGE 0.1 IN. (2.54 MM) (wire gage or drill index) in the space between the actuator end collar and the bracket. Move the gage through the space in the upper half.
1 If the distance is even (equal) and if the gage fits around the upper half, this shows the distance between the actuator end collar and the clamp bracket is even (equal). Select the cushion as instructed in paragraph (b) and condition 4 of Table 501.
2 If the distance is not even (not equal) in the upper half:
a If the gage does not fit in one location of the upper half (the distance is smaller than the gage), this shows the smallest distance is in the upper half:
- Measure the smallest distance with smaller size GAGE 0.1 IN. (2.54 MM), GAGE 0.07 IN. (1.78 MM) and GAGE 0.04 IN. (1.02 MM).
- Make a mark at the location of the smallest distance.
- Select a cushion as instructed in paragraph (b) and conditions 1, 2 or 3 of Table 501.
- Measure the largest distance with larger size GAGE 0.13 IN. (3.3 MM), GAGE 0.16 IN. (4.06 MM) and GAGE 0.19 IN. (4.83 MM).
- Make a mark at the location of the largest distance.
- Select the cushion as instructed in paragraph (b) and conditions 5, 6 or 7 of Table 501.
NOTE: A black stripe on the cushion shows the location of the thickest section. The thinnest section is 180 degrees opposite the stripe.
(5) Remove the upper half of the clamp bracket (Ref. AMM TASK 78-32-43-000-010) or (Ref. AMM TASK 78-32-48-000-010). (6) Install the cushion in the clamp bracket assembly.
(a) Cut the cushion in half.
(b) Install the cushion. If the cushion is difficult to install, extend (deploy) the translating sleeve and disconnect the actuator rod end from the translating sleeve bracket before you install the cushion.
(7) Tighten the connections of the flex tubes, manual drive, and rod ends then install the upper half of the clamp assembly (Ref. AMM TASK 78-32-43-400-010) and (Ref. AMM TASK 78-32-48-400-010).
(8) Install the actuator rod-end access panels (Ref. AMM TASK 78-32-43-400-010) and (Ref. AMM TASK 78-32-48-400-010).
E. Do a Check of the Proximity Switch Rigging
(1) Move the translating sleeves to the fully retracted (stowed) position (Ref. AMM TASK 78-31-00-710-041).
(2) Measure the distance between the face of the proximity switch and the target with GAGE - FEELER. If the distance is not between 0.059 IN. (1.5 MM) and 0.079 IN. (2.0 MM), you must rig the proximity switch.
Subtask 78-30-00-820-055-A ** ON A/C NOT FOR ALL (1) Move the translating sleeves to the fully retracted (stowed) position (Ref. AMM TASK 78-31-00-710-041).
(2) Measure the distance between the face of the proximity switch and the target with GAGE - FEELER. If the distance is not between 0.059 IN. (1.5 MM) and 0.079 IN. (2.0 MM), you must rig the proximity switch.
F. Rig the Proximity Switch
(1) Manually move the locking actuator lock lever to the unlocked position.
(2) Remove the nut, washer, proximity switch, and spacer from the locking actuator.
(3) Adjust the thickness of the spacer (Ref. AMM TASK 78-31-15-820-010).
(4) Install the spacer, proximity switch, washer, and nut on the locking actuator. TORQUE the nut to between 16 and 12 lbf.ft (2.17 and 1.63 m.daN ) (Ref. AMM TASK 70-23-11-911-013).
Subtask 78-30-00-820-062-A ** ON A/C NOT FOR ALL (1) Manually move the locking actuator lock lever to the unlocked position.
(2) Remove the nut, washer, proximity switch, and spacer from the locking actuator.
(3) Adjust the thickness of the spacer (Ref. AMM TASK 78-31-15-820-010).
(4) Install the spacer, proximity switch, washer, and nut on the locking actuator. TORQUE the nut to between 16 and 12 lbf.ft (2.17 and 1.63 m.daN )
(Ref. AMM TASK 70-23-11-911-013). G. Make sure that the holes of the translating sleeve and C-duct are not misaligned by inserting the lockout pin as explained in (Ref. AMM TASK 78-30-00-040-013) Para. 4.C.(1) thru 4.C.(4) and (Ref. AMM TASK 78-30-00-440-013) Para. 4.A.
Subtask 78-30-00-440-057-A ** ON A/C NOT FOR ALL Subtask 78-30-00-870-050-A ** ON A/C NOT FOR ALL I. If you opened the thrust reverser hydraulic system, bleed the air from the thrust reverser hydraulic actuation system.
(2) Operation of the thrust reverser system.
(3) Removal of the pins.
Subtask 78-30-00-820-061-A ** ON A/C NOT FOR ALL 5. Close-upCAUTION:
MAKE SURE THAT ALL CAUGHT AIR IS BLED FROM THE SYSTEM. IF YOU DO NOT DO THIS, CAUGHT AIR CAN CAUSE UNSATISFACTORY OPERATION OF THE TRANSLATING SLEEVES. TEN CYCLES OF TRANSLATING SLEEVE POWER EXTENSION AND RETRACTION WILL REMOVE ALL CAUGHT AIR FROM THE SYSTEM.
CAUTION:
YOU MUST MOVE THE LOCK LEVERS OF THE TWO LOCKING ACTUATORS AFT TO THE UNLOCKED POSITION BEFORE YOU BLEED THE SYSTEM. IF YOU DO NOT DO THIS, UNEVEN OPERATION OF THE TRANSLATING SLEEVES CAN CAUSE DAMAGE TO THE SYSTEM.
(1) Move the lock levers of the left and the right locking actuators aft to the unlocked position and install the IAE1N20049 PIN - LOCKOUT ACTUATOR, to hold the lock levers in the unlocked position. (2) Operation of the thrust reverser system.
WARNING:
MAKE SURE THAT THERE ARE NO PERSONS IN THE AREA AROUND THE THRUST REVERSER BEFORE YOU DO A POWER EXTENSION OR RETRACTION OF THE TRANSLATING SLEEVES. THE TRANSLATING SLEEVES EXTEND AND RETRACT IN 4.5 SECONDS OR LESS AND CAN CAUSE INJURY AND DAMAGE.
(a) Operate the thrust reverser system through ten cycles (Ref. AMM TASK 78-31-00-710-041). (3) Removal of the pins.
CAUTION:
MAKE SURE THAT THE LOCKING-ACTUATOR LOCK LEVERS ARE IN THE FORWARD LOCKED POSITION FOR FLIGHT OPERATION. IF THEY ARE NOT IN THIS POSITION, IT WILL NOT BE POSSIBLE TO OPERATE THE THRUST REVERSER DURING THE FLIGHT.
(a) Remove the IAE1N20049 PIN - LOCKOUT ACTUATOR, from the lock levers of the left and the right locking actuators and move the lock levers to the locked position. Subtask 78-30-00-410-065-A ** ON A/C NOT FOR ALL