W DOC AIRBUS | AMM A320F

Removal of the Power Plant [CFMB]

TASK 71-00-00-000-042-A
Removal of the Power Plant

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.
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.
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
1. Reason for the Job
This task gives the information for the removal of the power plant.
The power plant can be removed in particular configuration. It is allowed to remove the power plant with or without the air intake cowl installed.
NOTE: Interferences between the LPTACC inlet airscoop assembly and the thrust reverser cowl have been observed in production on a limited number of A320 Family aircraft powered with CFM56-5B/3 engines. CFM has issued SB CFM56-5B S/B 75-0044. In order to recover the gap between the LPTACC scoop and the thrust reverser cowl to avoid potential interference, Airbus recommends to incorporate this SB at the opportunity of engine removal/installation.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 1M(3 FT)
No specific
AR
CONTAINER 5 L (1.32 USGAL)
No specific
AR
COVER - PROTECTION
No specific
AR
PLIERS - NOSE, SOFT, LONG
No specific
AR
PLUG - BLANKING
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
No specific
AR
TAPE - ADHESIVE
No specific
AR
TIE WRAP(S)
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 55 and 45 lbf.in (0.62 and 0.51 m.daN ) T
No specific
Torque wrench: range to between 18 and 12 m.daN (132.74 and 88.50 lbf.ft ) T
98D27803500001
1
LOCKING TOOL ZERO POS
98D71203500000
1
BOOTSTRAP-SYSTEM
ALT71000001
1
ELECTRICAL HOIST KIT
RSE1224
2
SPLINT-ENGINE MOUNT AFT
S487ETT2
1
ENGINE TROLLEY
S587-2BH0
1
BRACE - HOLD OPEN COWLS
S686CR56-5
1
ENGINE CRADLE
TMHBS10-10-00
1
BRACE-HOLD OPEN COWLS
TMHEC28-00-00
1
CRADLE,CFM56-5 ENGINE
TMHET06-00-00
1
TRAILER,ENGINE GROUND HANDLING
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP2442)
engine oil
(Material No.CP8001)
safetywire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)
safetywire 0.032 in. (0.8 mm) dia.
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR, 473AL, 473AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR, 483AL, 483AR
 D. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
90
PACKING
AIPC 73-11-10-01-290
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 05-57-00-200-001-A
Aircraft Stability
TASK 05-57-00-200-001-B
Aircraft Stability
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 27-80-00-866-005-A
Retracting the Slats on the Ground
TASK 29-14-00-614-001-A
Depressurization of the Hydraulic Reservoirs
TASK 31-36-00-740-015-A
Printout of the Engine/APU Hours and Cycles Stored in the Flight Data Interface and Management Unit (FDIMU)
TASK 36-11-49-000-026-A
Removal of the Sense Line between the Bleed Pressure-Regulator Valve (PRV) and the Pylon Interface
TASK 70-22-00-911-002-A
Locking Procedures
TASK 71-13-00-010-040-B
Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B
Closing of the Fan Cowl Doors
TASK 71-73-49-000-025-A
Removal of the Fuel Overboard Drain Tube
TASK 78-30-00-481-041-B
Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B
Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B
Closing of the Thrust Reverser Doors
F Fan Duct Panels and Sealing Fitting Assy
F Hold Open Cowl Braces - Installation
F Fuel Filter Drain Plug
F Thrust Reverser Electrical Connectors
F Power Plant - Right Side
F Power Plant - Left Side
F Pneumatic System
F Forward Engine Mount
F Bootstrap Installation Manual Hoist Kit
F Bootstrap Installation Electrical Hoist Kit
F Bootstrap Installation
F Aft Engine Mount
3. Job Set-up
Subtask 71-00-00-740-052-A ** ON A/C NOT FOR ALL
A. Do a printout of the engine hours and cycles and keep the print with the engine for follow-up (Ref. AMM TASK 31-36-00-740-006) or (Ref. AMM TASK 31-36-00-740-015).
NOTE: Some tasks will possibly not be applicable depending on whether a DMU or an FDIMU is installed on the aircraft.
Subtask 71-00-00-941-066-A ** ON A/C NOT FOR ALL
B. Safety Precautions
   (1) Make sure that aircraft is stable (Ref. AMM TASK 05-57-00-200-001).
NOTE: If the aircraft is on jacks, make sure that it is leveled before you remove the engine.
   (2) On the center pedestal, on ENG panel 115VU:
     (a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
   (3) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
   (4) 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) to tell persons not to energize the FADEC 1(2).
   (5) Make sure that the slats are retracted (Ref. AMM TASK 27-80-00-866-005) and install 98D27803500001 LOCKING TOOL ZERO POS on the flap and slat control lever.
   (6) On panel 30VU, make sure that the APU BLEED pushbutton switch is released (ON legend off) and install a WARNING NOTICE(S) to tell persons not to use it.
   (7) Put a WARNING NOTICE(S) on the HP ground connector to tell persons not to pressurize the pneumatic system.
Subtask 71-00-00-861-089-A ** ON A/C NOT FOR ALL
C. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
Subtask 71-00-00-865-087-A ** ON A/C NOT FOR ALL
WARNING: OPEN THE PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3) BEFORE ENG1(2)FADEC A and EIU 1(2) C/B'S 2KS1 AND 2KS2. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
D. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY2RKE14
49VUCOM/CVR/CTL4RKE13
** ON A/C NOT FOR ALL
49VUENGINE/1 AND 2/IGN/SYS A1JHA03
49VUANTI ICE/PROBES/AOA/14DA1D04
49VUANTI ICE/PROBES/PITOT/13DA1D02
** ON A/C NOT FOR ALL
49VUANTI ICE/RAIN/RPLNT/CAPT1DB1D01
** ON A/C NOT FOR ALL
49VUCOM/CVR/SPLY23RKE14
49VUCOM/CVR/CTL26RKE13
** ON A/C NOT FOR ALL
121VURCDR/DFDR7TUK16
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B2WE1Q44
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A1WE1Q43
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B2WE2Q42
121VUENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A1WE2Q41
122VUANTI ICE/WINDOWS/R4DG2W14
122VUANTI ICE/WINDOWS/L4DG1X14
122VUANTI ICE/PROBES/2/TAT1DA2Y15
122VUANTI ICE/PROBES/2/PITOT3DA2Y14
122VUANTI ICE/PROBES/2/AOA4DA2Y13
122VUANTI ICE/PROBES/2/STATIC5DA2Y11
122VUANTI ICE/PROBES/3/PITOT3DA3Z16
122VUANTI ICE/PROBES/3/AOA4DA3Z15
122VUANTI ICE/PROBES/3/STATIC5DA3Z14
122VUANTI ICE/PROBES/1/STATIC5DA1Z13
122VUANTI ICE/PROBES/1/TAT1DA1Z12
** ON A/C NOT FOR ALL
122VUANTI ICE/RAIN/RPLNT/F/O1DB2W11
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUFUEL/LP VALVE/MOT1/ENG11QGA08
49VUENGINE/1/FIRE DET/LOOP A7WD1A06
49VUENGINE/1/FADEC A/AND EIU 12KS1A04
121VUFUEL/LP VALVE/MOT2/ENG13QGM25
121VUENGINE/IGN/ENG1/SYS B3JH1P41
121VUENGINE/IGN/ENG1/SYS A BAT2JH1P39
121VUENGINE/ENG1/FIRE DET/LOOP B8WD1Q38
121VUENGINE/ENG1/FADEC B/AND EIU 14KS1R41
122VUELEC/GCU/12XU1T26
122VUANTI ICE/ENG/11DN1X10
FOR FIN: 1000EM2 (ENGINE2)
49VUFUEL/LP VALVE/MOT1/ENG22QGA09
49VUENGINE/2/FIRE DET/LOOP B8WD2A07
49VUENGINE/2/FADEC A/AND EIU 22KS2A05
121VUFUEL/LP VALVE/MOT2/ENG24QGM26
121VUHYDRAULIC/HYD POWER/Y3803GXN30
121VUENGINE/IGN/ENG2/SYS B3JH2P42
121VUENGINE/IGN/ENG2/SYS A BAT2JH2P40
121VUENGINE/ENG2/FADEC B4KS2Q40
121VUENGINE/ENG2/FIRE DET/LOOP A7WD2Q39
122VUELEC/GCU/22XU2T27
122VUANTI ICE/ENG/21DN2W10
123VUY HYD/ELEC/PUMP3802GXAB06
123VUY HYD/ELEC/ELEC PUMP/NORM3801GXAB03
Subtask 71-00-00-865-158-A ** ON A/C NOT FOR ALL
WARNING: OPEN THE PROBE HEATER AND WINDOW HEATER CIRCUIT-BREAKERS BEFORE YOU OPEN THE PHC AND WHC CIRCUIT BREAKERS. IF YOU DO NOT OBEY THIS SEQUENCE:
  • THE PROBES WILL BECOME TOO HOT.
  • THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.
E. Open, safety and tag this(these) circuit breaker(s):
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUANTI ICE/PROBES/PHC/12DA1D03
122VUANTI ICE/WHC/25DG2W13
122VUANTI ICE/WHC/15DG1X13
122VUANTI ICE/PROBES/PHC/32DA3Y16
122VUANTI ICE/PROBES/PHC/22DA2Y12
Subtask 71-00-00-865-088-A ** ON A/C NOT FOR ALL
F. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VUENGINE/1/HP FUEL SOV1KC1A01
FOR FIN: 1000EM2 (ENGINE2)
49VUENGINE/2/HP FUEL SOV1KC2A02
Subtask 71-00-00-941-067-A ** ON A/C NOT FOR ALL
G. Put a WARNING NOTICE(S) on the circuit breaker(s) 1KC1(2) to tell persons not to open it (them).
Subtask 71-00-00-864-051-A ** ON A/C NOT FOR ALL
H. Depressurize the hydraulic reservoir (Ref. AMM TASK 29-14-00-614-001):
   (1) FOR [1000EM1] (ENGINE-1)
Depressurize the Green hydraulic reservoir.
   (2) FOR [1000EM2] (ENGINE-2)
Depressurize the Yellow hydraulic reservoir.
Subtask 71-00-00-010-093-A ** ON A/C NOT FOR ALL
I. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
   (2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
   (3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 71-00-00-040-069-A ** ON A/C NOT FOR ALL
J. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).
Subtask 71-00-00-010-094-A ** ON A/C NOT FOR ALL
K. Get Access
CAUTION: BEFORE OPENING THE THRUST REVERSER DOORS TO THE 45 DEGREES POSITION MAKE SURE THAT THE SLATS ARE RETRACTED. IF NOT THE SLATS CAN TOUCH THE INBOARD THRUST REVERSER DOOR.
   (1) Open the thrust reverser doors to the 45 degrees position (Ref. AMM TASK 78-36-00-010-040):
   (2) FOR [1000EM1] (ENGINE-1)
451AL 452AR
   (3) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 71-00-00-941-068-A ** ON A/C NOT FOR ALL
L. Put the ACCESS PLATFORM 1M(3 FT) in position at the engine level.
   (1) At the half upper part of the fan frame, seal the fan duct panels with TAPE - ADHESIVE
F Fan Duct Panels and Sealing Fitting Assy ** ON A/C NOT FOR ALL
Subtask 71-00-00-480-059-A ** ON A/C NOT FOR ALL
M. Retract Fan and Thrust Hold Open Rods
   (1) Install S587-2BH0 BRACE - HOLD OPEN COWLS or TMHBS10-10-00 BRACE-HOLD OPEN COWLS to support the fan and thrust reverser cowl doors.
F Hold Open Cowl Braces - Installation ** ON A/C NOT FOR ALL
   (2) Retract the fan cowl hold open rods (Ref. AMM TASK 71-13-00-410-040).
   (3) Retract the thrust reverser doors hold open rods (Ref. AMM TASK 78-36-00-410-040).
Subtask 71-00-00-480-059-B ** ON A/C NOT FOR ALL
M. Retract Fan and Thrust Hold Open Rods
   (1) Install S587-2BH0 BRACE - HOLD OPEN COWLS or TMHBS10-10-00 BRACE-HOLD OPEN COWLS to support the fan and thrust reverser cowl doors.
F Hold Open Cowl Braces - Installation ** ON A/C NOT FOR ALL
   (2) Retract the fan cowl hold open rods (Ref. AMM TASK 71-13-00-410-040).
   (3) Retract the thrust reverser doors hold open rods (Ref. AMM TASK 78-36-00-410-040).
Subtask 71-00-00-680-051-A ** ON A/C NOT FOR ALL
N. Drain the remaining fuel from the engine and the pylon fuel hose at the fuel filter as follows:
F Fuel Filter Drain Plug ** ON A/C NOT FOR ALL
   (1) Put a CONTAINER 5 L (1.32 USGAL) under the engine for draining residual fuel.
   (2) Cut and remove the safetywire from the drain plug (80) of the fuel filter cover.
   (3) Remove the drain plug (80) from the fuel filter cover and let the fuel drain from the fuel filter cover.
   (4) Remove and discard the packing (90) from the drain plug (80).
WARNING: USE PERSONAL PROTECTION EQUIPMENT. USE THE ENGINE OIL IN A WELL-VENTILATED AREA. ENGINE OIL IS TOXIC.
   (5) Lubricate a new AIPC 73-11-10-01-290 PACKING (90) with engine oil (Material No.CP2442) .
   (6) Install the new packing (90) on the drain plug (80).
   (7) Install the drain plug (80) and TORQUE to between 55 and 45 lbf.in (0.62 and 0.51 m.daN ) T. Safety with CP8001safetywire 0.032 in. (0.8 mm) dia., or CP8002safetywire 0.032 in. (0.8 mm) dia. (Ref. AMM TASK 70-22-00-911-002).
Subtask 71-00-00-010-095-B ** ON A/C NOT FOR ALL
O. Remove the components:

PRE SPIB CFM02253MW1

   (1) At the rear of the drain mast, remove the fuel overboard drain tube
(Ref. AMM TASK 71-73-49-000-025).

END OF PRE SPIB CFM02253MW1


POST SPIB CFM02253MW1

   (2) Not Applicable

END OF SPIB CFM02253MW1

   (3) Remove the access panels:
   (4) FOR [1000EM1] (ENGINE-1)
473AL 473AR
   (5) FOR [1000EM2] (ENGINE-2)
483AL 483AR
   (6) Remove these components from the right side of the engine:
     (a) Disconnect the electrical connectors 450VCA, 452VCA, 454VCA, and 457VCA from the aft pylon junction box.
F Thrust Reverser Electrical Connectors ** ON A/C NOT FOR ALL
NOTE: If necessary, use the PLIERS - NOSE, SOFT, LONG to loosen the electrical connectors.
     (b) Remove the two clamps which attach the core harness to the pylon and keep them attached to the harness.
NOTE: Two clamp sizes can be found depending of the core harness diameter. To make sure that the correct clamps are installed, keep the clamps attached to the harness.
     (c) Disconnect the generator harness connector 400VCA from the forward pylon junction box.
F Power Plant - Right Side ** ON A/C NOT FOR ALL
     (d) Disconnect the thrust reverser harness connectors 4101KSB, 4101KSA and 4102KSA from the thrust reverser hydraulic control unit.
F Power Plant - Right Side ** ON A/C NOT FOR ALL
     (e) Remove the screw (15) and nut (20) that attach the clamps (10), (25) to the bracket on the HCU.
     (f) Remove the clamp (10) from the harness for connector 4101KSB and remove the harness from the HCU.
NOTE: Loosely install the screw (15) and nut (20) on the clamp (25) and tighten with your hand.
     (g) Disconnect the electrical connectors 401VCA, 402VCA, 403VCA, 404VCA, 405VCA, 406VCA, 407VCA, 408VCA, 409VCA, 447VCA, and 448VCA from the forward pylon junction box.
F Power Plant - Right Side ** ON A/C NOT FOR ALL
     (h) Remove the coupling (5) and disconnect the upper starter duct from the pylon duct.
F Power Plant - Right Side ** ON A/C NOT FOR ALL
     (i) Install COVER - PROTECTION on the open ends of the ducts.
     (j) Install PLUG - BLANKING on the electrical connectors.
   (7) Remove these components from the left side of engine:
     (a) Disconnect the thrust reverser harness connectors 4100KSA and 4100KSB from the electrical junction box.
     (b) Disconnect the coupling half on the suction hose (60), the pressure hose (55), and the upper case drain hose (50) from the fluid disconnect panel.
F Power Plant - Left Side ** ON A/C NOT FOR ALL
     (c) Disconnect the hose/tube (175) from the check valve restrictor pipe interface on the HCU.
F Power Plant - Left Side ** ON A/C NOT FOR ALL
     (d) Remove the bolts (35), the washers (40) that attach the fuel/return by-pass hose (45), from the fluid disconnect panel. Remove and discard the gasket (10).
F Power Plant - Left Side ** ON A/C NOT FOR ALL
     (e) Remove the bolts (25), the washers (30) that attach the main fuel supply hose (20) to the fluid disconnect panel. Remove and discard the gasket (15).
F Power Plant - Left Side ** ON A/C NOT FOR ALL
     (f) Install COVER - PROTECTION on the disconnected hoses and tubes.
     (g) Disconnection of the tubes:
CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:
  • ONE WRENCH TO HOLD THE UNION, AND
  • ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.
THIS PREVENTS DAMAGE TO THE PARTS.
       1 Disconnect the sense tubes (75) and (80) from the pylon interface tubes.
F Pneumatic System ** ON A/C NOT FOR ALL
       2 Disconnect the pressure tube (70) from the union installed in the upper high-pressure manifold duct (engine 1 only).
F Pneumatic System ** ON A/C NOT FOR ALL
       3 Remove the coupling (65) and disconnect the pylon interface duct from the pylon duct.
F Pneumatic System ** ON A/C NOT FOR ALL
Subtask 71-00-00-020-078-A ** ON A/C NOT FOR ALL
P. Removal of the Pressure Regulator Valve (PRV) Sense Line
   (1) Remove the sense line between the bleed PRV and the pylon interface (Ref. AMM TASK 36-11-49-000-026).
Subtask 71-00-00-020-060-A ** ON A/C NOT FOR ALL
Q. Loosen the forward engine mount bolts.
   (1) Remove the bolts (100), the washers (105) and (115), and nuts (110) that attach the nut retainers (125).
F Forward Engine Mount ** ON A/C NOT FOR ALL
   (2) Cut and remove the safetywire and loosen the bolts (85) as follows:
     (a) Loosen one bolt. TORQUE again the bolt to between 18 and 12 m.daN (132.74 and 88.50 lbf.ft ) T or to the maximum load that a mechanic can apply with a standard wrench.
     (b) Apply this procedure on the three remaining bolts, one by one.
Subtask 71-00-00-480-060-A ** ON A/C NOT FOR ALL
R. Installation of the Bootstrap System
F Bootstrap Installation Manual Hoist Kit ** ON A/C NOT FOR ALL
F Bootstrap Installation Electrical Hoist Kit ** ON A/C NOT FOR ALL
   (1) Install the 98D71203500000 BOOTSTRAP-SYSTEM:
F Bootstrap Installation ** ON A/C NOT FOR ALL
     (a) Put the rear beam (9) in position on the lower part of the pylon and install the pins (8).
     (b) If the bootstrap has a spacer, do the step that follows:
       1 Install the spacer (10) on the pylon.
     (c) Install the center hinge clamp (6).
     (d) Install the right and left clamps (7).
     (e) Put the forward hinge arms (4) and (5) in position and install the pins (3).
     (f) Make sure that the forward hinge arms (4) and (5) are and remain in the horizontal position. To do this use the spirit levels installed on the arms.
     (g) Install the link (2) at the upper part of the hinge arms (4) and (5) with the pins (1).
     (h) Install the bootstrap installation hoist kit on the bootstrap system:
F Bootstrap Installation ** ON A/C NOT FOR ALL
       1 Install the manual hoist kit:
F Bootstrap Installation Manual Hoist Kit ** ON A/C NOT FOR ALL
         a Put the dynamometers (4) and the clamps (3) in position on the forward hinge arms (1) and (7) and the rear beam (8).
         b Install the pins (2), the clamps (3) and the dynamometers (4) on the bootstrap system.
         c Install the four chain pulley blocks (5).
       2 Install the ALT71000001 ELECTRICAL HOIST KIT:
F Bootstrap Installation Electrical Hoist Kit ** ON A/C NOT FOR ALL
         a Put the dynamometric shackle (4) and the clamps (3) in position on the forward hinge arms (1) and (7) and the rear beam (9).
         b Install the pins (2), the clamps (3) and the dynamometric shackle (4) on the bootstrap system.
         c Install the four electrical hoists (5).
NOTE: Make sure that the dynamometers or that the electrical motors are installed towards the outside of the engine.
   (2) Install the engine cradle:
CAUTION: BE CAREFUL WHEN YOU INSTALL THE CRADLE ON, OR REMOVE IT FROM, THE ENGINE. IF NOT, YOU CAN CAUSE DAMAGE TO THE VIBRATION SENSOR CONNECTOR. THE VIBRATION SENSOR CONNECTOR IS IN FRONT OF THE FORWARD HANDLING POINT ON THE RIGHT SIDE.
     (a) Put the S487ETT2 ENGINE TROLLEY or TMHET06-00-00 TRAILER,ENGINE GROUND HANDLING together with the S686CR56-5 ENGINE CRADLE or TMHEC28-00-00 CRADLE,CFM56-5 ENGINE in position below the engine.
   (3) Attach the chain hooks (6) to the engine cradle.
   (4) Release the pins that attach the engine cradle to the trolley and lift the engine cradle to the engine.
NOTE: Make the engine cradle level. To do this, use the chain pulleys (5) (for the manual hoist kit) or the electrical hoists (5) (for the electrical hoist kit).
   (5) Put the pins of the front fixtures into the engine handling points and then install the rear support on the left side. Attach to the engine with a pin:
     (a) The pin of the rear support on the left side must be put in the lower hole of the engine bracket.
   (6) Put the pins into each fixture. Then, at the same time, adjust the tension of the handling hoists so that you can read the values on the dynamometers (4) (for the manual hoist kit) or on the service desk display (8) (for the electrical hoist kit). Make sure that the values are between:
  • 1968.34 daN (4425.00 lbf) (2000 kg) and 1979.46 daN (4450.00 lbf) (2025 kg) for the forward dynamometer (4) (for the manual hoist kit) or on the service desk display (8) (for the electrical hoist kit).
  • 389.22 daN (875.00 lbf) (400 kg) and 400.34 daN (900.00 lbf) (425 kg) for the aft dynamometer (4) (for the manual hoist kit) or on the service desk display (8) (for the electrical hoist kit).
4. Procedure
Subtask 71-00-00-020-061-A ** ON A/C NOT FOR ALL
A. Remove the bolts of the engine mounts
WARNING: BEFORE YOU REMOVE OR INSTALL THE POWER PLANT, MAKE SURE THAT ALL PERSONNEL IS AWAY FROM THE AIRCRAFT. THE POWER PLANT WEIGHS APPROXIMATELY 6280 POUNDS (2850 KG). IF IT FALLS ON PERSONS, INJURY OR DEATH CAN OCCUR.
   (1) Remove the bolts (85), washers (90), nuts (120) that attach the forward engine mount (95) to the pylon.
F Forward Engine Mount ** ON A/C NOT FOR ALL
   (2) Remove the bolts (135) and washers (140) that attach the aft engine mount (145) to the pylon.
F Aft Engine Mount ** ON A/C NOT FOR ALL
Subtask 71-00-00-869-177-A ** ON A/C NOT FOR ALL
B. Make sure that no lines or unions stay connected to the pylon.
Subtask 71-00-00-480-061-A ** ON A/C NOT FOR ALL
CAUTION: MAKE SURE THAT THE PYLON FORWARD MOUNT DOES NOT TOUCH THE UPPER STRUT OR THE UPPER SEAL ASSY WHEN YOU LOWER THE ENGINE OR DAMAGE CAN OCCUR.
C. Installation of the Support Equipment
F Fan Duct Panels and Sealing Fitting Assy ** ON A/C NOT FOR ALL
F Bootstrap Installation Manual Hoist Kit ** ON A/C NOT FOR ALL
F Bootstrap Installation Electrical Hoist Kit ** ON A/C NOT FOR ALL
   (1) Put the pulley locking levers in down position then lower the engine with the four chain pulley blocks (5) (for the manual hoist kit) or the four electrical hoists (5) (for the electrical hoist kit).
NOTE: During lowering procedure, make sure that the differential load read on the dynamometers (4) (for the manual hoist kit) or on the service desk display (8) (for the electrical hoist kit) is less than:
- 600 daN (1348.9 lbf) (612 kg) between the two front chains,
- 200 daN (449.6 lbf) (204 kg) between the two rear chains.
NOTE: Be careful not to cause dynamic effects while you lower the engine.
   (2) Use the level indicators on the forward hinge arms of the bootstrap to keep this hinge arms as near as possible to the horizontal position.
   (3) Put first the aft section of the engine cradle in position on the trolley and then put the forward section.
   (4) Lock the engine cradle to the trolley with pins.
   (5) Remove the four chain hooks (6) from the engine cradle stirrups.
   (6) Remove the bootstrap installation hoist kit as follows:
     (a) For the manual hoist kit:
F Bootstrap Installation Manual Hoist Kit ** ON A/C NOT FOR ALL
       1 Remove the four chain pulley blocks (5).
       2 Hold the dynamometers (4) and the clamps (3) in position on the forward hinge arms (1) and (7) and the rear beam (8) of the bootstrap system.
       3 Remove the pins (2), the clamps (3) and the dynamometers (4) from the bootstrap system.
     (b) For the ALT71000001 ELECTRICAL HOIST KIT:
F Bootstrap Installation Electrical Hoist Kit ** ON A/C NOT FOR ALL
       1 Remove the four electrical hoists 2T (5).
       2 Hold the dynamometric shackle (4) and the clamps (3) in position on the forward hinge arms (1) and (7) and the rear beam (9) of the bootstrap system.
       3 Remove the pins (2), the clamps (3) and the dynamometric shackles (4) from the bootstrap system.
Subtask 71-00-00-020-059-A ** ON A/C NOT FOR ALL
CAUTION: OBEY THESE PRECAUTIONS WHEN YOU TOW OR MOVE THE AIRCRAFT ON THE GROUND WITH THE ENGINE REMOVED:
  • THE THRUST REVERSER MUST BE REMOVED.
  • THE FAN COWLS MUST BE REMOVED.
  • THE SPEED OF THE AIRCRAFT MUST BE 2 KM/H OR SLOWER.
IF YOU DO NOT OBEY THESE INSTRUCTIONS, YOU CAN CAUSE DAMAGE TO THE NACELLE STRUCTURE.
D. Removal of the Engine
NOTE: When you lower the engine, check that the assembly is level and never in a nose down attitude.
Subtask 71-00-00-480-082-A ** ON A/C NOT FOR ALL
E. Installation of the Aft Engine Mount Anti Gouge Splints
   (1) Put the top splint assemblies (larger) on the outside of the aft engine mount links.
NOTE: The end of the splint assembly marked TOP must touch the beam assembly. The other end marked BOTTOM must touch the links.
   (2) Put the bottom splint (smaller) on the inside of the aft engine mount links.
   (3) Attach the RSE1224 SPLINT-ENGINE MOUNT AFT to the engine mount two places with TIE WRAP(S).
     (a) Wind the TIE WRAP(S) around the splints and the aft mount where the splint touches the beam assembly.
     (b) Wind the TIE WRAP(S) around the splints and the aft mount where the splint touches the link.
     (c) Make sure that the TIE WRAP(S) is wound very tight and that the splints can not move.
[Rev.10 from 2021] 2026.04.01 02:24:23 UTC
"Aviabrain" 2025