DOC AIRBUS | AMM A320FCheck of the N/WS Zero Position (with the Nose-Wheel Alignment Tool)
TASK 32-51-00-220-001-A
Check of the N/WS Zero Position (with the Nose-Wheel Alignment Tool)
To do a check of the nose wheel steering (N/WS) zero position, with the nose-wheel alignment tool JT2000AIRBUS for the adjustment.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 32-51-00-941-061-A
Reference Points for the Rear Target ** ON A/C NOT FOR ALL
Reference Points for the Rear Target ** ON A/C NOT FOR ALL
(1) Installation of the front target on the ground.
(b) Open the radome to get access to the first reference point (first point) (Ref. AMM TASK 53-15-11-010-001).
(c) Put the front target in position on the ground, approximately below the first reference point.
(d) Make a mark on the NLG door (second reference point).
(e) Install the laser device on the front target arm. To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the front target on the ground.
1 Point the laser beam to the first reference point.
2 Point the laser beam to the second reference point (mark on the NLG door).
3 Make sure that the laser beam points along the centerline of the first and second reference points. If necessary, adjust the lateral position of the front target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the front target arm.
Be very careful not to move the front target. If the front target moves, do steps (f) and (g) again.
(2) Installation of the rear target on the ground
(b) Make sure that the area below the center and rear sections of the fuselage is clear:
(d) Install the 98F05003000002 TARGET-MEASUREMENT at reference point 12.
(e) Install the laser device on the rear target arm.
To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the rear target on the ground.
1 Point the laser beam to point 11.
2 Point the laser beam to the 98F05003000002 TARGET-MEASUREMENT (installed at point 12).
3 Make sure that the laser beam points along the centerline of points 11 and 12. If necessary, adjust the lateral position of the rear target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the rear target arm.
Be very careful not to move the rear target. If the rear target moves, do steps (f) and (g) again.
(3) Lift the NLG axle.
(a) Put a thick layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) on the pivoting cup of the axle jack.
(b) Lift the NLG axle sufficiently to turn the two wheels (Ref. AMM TASK 07-12-00-582-001).
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(7) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
Subtask 32-51-00-860-081-B ** ON A/C NOT FOR ALL
Reference Points for the Rear Target ** ON A/C NOT FOR ALL
Reference Points for the Rear Target ** ON A/C NOT FOR ALL
(1) Installation of the front target on the ground.
(b) Open the radome to get access to the first reference point (first point) (Ref. AMM TASK 53-15-11-010-001).
(c) Put the front target in position on the ground, approximately below the first reference point.
(d) Make a mark on the NLG door (second reference point).
(e) Install the laser device on the front target arm. To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the front target on the ground.
1 Point the laser beam to the first reference point.
2 Point the laser beam to the second reference point (mark on the NLG door).
3 Make sure that the laser beam points along the centerline of the first and second reference points. If necessary, adjust the lateral position of the front target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the front target arm.
Be very careful not to move the front target. If the front target moves, do steps (f) and (g) again.
(2) Installation of the rear target on the ground
(b) Make sure that the area below the center and rear sections of the fuselage is clear:
(d) Install the 98F05003000002 TARGET-MEASUREMENT at reference point 12.
(e) Install the laser device on the rear target arm.
To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the rear target on the ground.
1 Point the laser beam to point 11.
2 Point the laser beam to the 98F05003000002 TARGET-MEASUREMENT (installed at point 12).
3 Make sure that the laser beam points along the centerline of points 11 and 12. If necessary, adjust the lateral position of the rear target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the rear target arm.
Be very careful not to move the rear target. If the rear target moves, do steps (f) and (g) again.
(3) Lift the NLG axle.
(a) Put a thick layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) on the pivoting cup of the axle jack.
(b) Lift the NLG axle sufficiently to turn the two wheels (Ref. AMM TASK 07-12-00-582-001).
(5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(7) Pressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).
Subtask 32-51-00-865-111-A
Subtask 32-51-00-220-067-A
Subtask 32-51-00-865-112-A
[Rev.10 from 2021]
2026.04.01 00:51:12 UTC
Check of the N/WS Zero Position (with the Nose-Wheel Alignment Tool)
WARNING:
MAKE SURE THAT THE GROUND SAFETY LOCKS ARE CORRECTLY INSTALLED ON THE MLG AND NLG. MOVEMENTS OF THE LANDING GEARS CAN CAUSE INJURY TO PERSONS AND CAUSE 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.
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobTo do a check of the nose wheel steering (N/WS) zero position, with the nose-wheel alignment tool JT2000AIRBUS for the adjustment.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | WARNING NOTICE(S) |
| 98F05003000002 | 1 | TARGET-MEASUREMENT |
| JT2000AIRBUS | 1 | TOOL-NOSE WHEEL ALIGNMENT |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.03GBB1) | Synthetic Oil base Grease-General Purpose Clay Thickened - |
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 07-12-00-582-001-A | Jacking of the Nose Landing Gear |
| TASK 08-22-00-200-001-A | Precise Leveling |
| 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 24-41-00-862-002-A | De-energize the Aircraft Electrical Circuits Supplied from the External Power |
| TASK 24-41-00-862-002-A-01 | De-energize the Aircraft Electrical Circuits Supplied from the APU |
| TASK 24-41-00-862-002-A-02 | De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) |
| TASK 29-10-00-863-001-A | Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-863-002-A | Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart |
| TASK 29-10-00-864-001-A | Depressurize the Green Hydraulic System |
| TASK 29-10-00-864-002-A | Depressurize the Yellow Hydraulic System |
| TASK 29-23-00-863-001-A | Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump |
| TASK 29-23-00-864-001-A | Depressurize the Green and Yellow Hydraulic Systems after Operation of the PTU |
| TASK 29-24-00-863-001-A | Pressurize the Yellow Hydraulic System with the Electric Pump |
| TASK 32-51-00-820-003-A | Adjustment of the N/WS Zero Position with Adjusting Tool F26630200 for A/C with N/WS Feedback Sensor-Box P/N C24763000 with the Nose-Wheel Alignment Tool |
| TASK 32-51-00-820-003-A-01 | Adjustment of the N/WS Zero Position with Adjusting Tool M46196-100 for A/C with N/WS Feedback Sensor-Box P/N C24763000 with the Nose-Wheel Alignment Tool |
| TASK 32-51-00-820-003-A-02 | Adjustment of the N/WS Zero Position for A/C with N/WS Feedback Sensor-Box P/N E21336000 with the Nose-Wheel Alignment Tool |
| TASK 53-15-11-010-001-A | Opening of the Radome |
| TASK 53-15-11-410-001-A | Closing of the Radome |
Subtask 32-51-00-941-061-A
A. General
(1) In the cockpit, put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear or the N/WS.
(2) On the right-center instrument panel (400VU), make sure that the L/G normal control-lever is in the DOWN position and the A/SKID & N/W STRG switch is in the ON position.
(3) On the nose gear leg, on the N/WS deactivation electrical-box, make sure that the towing lever is in the normal position (engaged position).
(4) Make sure that the N/WS handwheels and the rudder pedals are in the neutral position.
(5) On the rudder-trim parking-brake panel (110VU), make sure that the RUD TRIM indicator shows zero.
Subtask 32-51-00-860-081-A ** ON A/C NOT FOR ALL (1) In the cockpit, put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear or the N/WS.
(2) On the right-center instrument panel (400VU), make sure that the L/G normal control-lever is in the DOWN position and the A/SKID & N/W STRG switch is in the ON position.
(3) On the nose gear leg, on the N/WS deactivation electrical-box, make sure that the towing lever is in the normal position (engaged position).
(4) Make sure that the N/WS handwheels and the rudder pedals are in the neutral position.
(5) On the rudder-trim parking-brake panel (110VU), make sure that the RUD TRIM indicator shows zero.
WARNING:
BE CAREFUL WHEN YOU USE THIS TOOL, BECAUSE IT CONTAINS CLASS 2 LASER EQUIPMENT.
B. Installation of the Nose-Wheel Alignment Tool - DO NOT LOOK DIRECTLY INTO THE BEAM
- DO NOT POINT THE BEAM AT OTHER PERSONS.
Reference Points for the Rear Target ** ON A/C NOT FOR ALL Reference Points for the Rear Target ** ON A/C NOT FOR ALL NOTE: Two reference points are used to put the front target in the correct position on the ground.
(a) Refer to the manufacturer's instructions to assemble the front target. - The first reference point is used to put the front target in position on the ground.
- The first and the second reference points are used to adjust the lateral position of the front target with the laser device of the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT.
(b) Open the radome to get access to the first reference point (first point) (Ref. AMM TASK 53-15-11-010-001).
(c) Put the front target in position on the ground, approximately below the first reference point.
(d) Make a mark on the NLG door (second reference point).
(e) Install the laser device on the front target arm. To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the front target on the ground.
1 Point the laser beam to the first reference point.
2 Point the laser beam to the second reference point (mark on the NLG door).
3 Make sure that the laser beam points along the centerline of the first and second reference points. If necessary, adjust the lateral position of the front target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the front target arm.
Be very careful not to move the front target. If the front target moves, do steps (f) and (g) again.
(2) Installation of the rear target on the ground
NOTE: Two reference points are used to put the rear target in the correct position on the ground.
(a) Refer to the manufacturer's instructions to assemble the rear target. - Point 11 is used to put the rear target in position on the ground.
- Points 11 and 12 are used to adjust the lateral position of the rear target with the laser device of the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT.
To do this, it is necessary to install a measurement target on the aircraft, at point 12 to see the laser beam clearly on the target.
(b) Make sure that the area below the center and rear sections of the fuselage is clear:
- Find reference points 11 and 12 below the fuselage (Ref. AMM TASK 08-22-00-200-001).
(d) Install the 98F05003000002 TARGET-MEASUREMENT at reference point 12.
(e) Install the laser device on the rear target arm.
To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the rear target on the ground.
1 Point the laser beam to point 11.
2 Point the laser beam to the 98F05003000002 TARGET-MEASUREMENT (installed at point 12).
3 Make sure that the laser beam points along the centerline of points 11 and 12. If necessary, adjust the lateral position of the rear target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the rear target arm.
Be very careful not to move the rear target. If the rear target moves, do steps (f) and (g) again.
(3) Lift the NLG axle.
(a) Put a thick layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) on the pivoting cup of the axle jack.
(b) Lift the NLG axle sufficiently to turn the two wheels (Ref. AMM TASK 07-12-00-582-001).
NOTE: You must make sure that the wheel travel is clear because there can be an unwanted movement of the NLG.
(4) Refer to the manufacturer's instructions to install and set the nose-wheel alignment tool. (5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(7) Pressurize the Green hydraulic system
(Ref. AMM TASK 29-10-00-863-001) or (Ref. AMM TASK 29-23-00-863-001).
WARNING:
BE CAREFUL WHEN YOU USE THIS TOOL, BECAUSE IT CONTAINS CLASS 2 LASER EQUIPMENT.
B. Installation of the Nose-Wheel Alignment Tool - DO NOT LOOK DIRECTLY INTO THE BEAM
- DO NOT POINT THE BEAM AT OTHER PERSONS.
Reference Points for the Rear Target ** ON A/C NOT FOR ALL Reference Points for the Rear Target ** ON A/C NOT FOR ALL NOTE: Two reference points are used to put the front target in the correct position on the ground.
(a) Refer to the manufacturer's instructions to assemble the front target. - The first reference point is used to put the front target in position on the ground.
- The first and the second reference points are used to adjust the lateral position of the front target with the laser device of the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT.
(b) Open the radome to get access to the first reference point (first point) (Ref. AMM TASK 53-15-11-010-001).
(c) Put the front target in position on the ground, approximately below the first reference point.
(d) Make a mark on the NLG door (second reference point).
(e) Install the laser device on the front target arm. To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the front target on the ground.
1 Point the laser beam to the first reference point.
2 Point the laser beam to the second reference point (mark on the NLG door).
3 Make sure that the laser beam points along the centerline of the first and second reference points. If necessary, adjust the lateral position of the front target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the front target arm.
Be very careful not to move the front target. If the front target moves, do steps (f) and (g) again.
(2) Installation of the rear target on the ground
NOTE: Two reference points are used to put the rear target in the correct position on the ground.
(a) Refer to the manufacturer's instructions to assemble the rear target. - Point 11 is used to put the rear target in position on the ground.
- Points 11 and 12 are used to adjust the lateral position of the rear target with the laser device of the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT.
To do this, it is necessary to install a measurement target on the aircraft, at point 12 to see the laser beam clearly on the target.
(b) Make sure that the area below the center and rear sections of the fuselage is clear:
- Find reference points 11 and 12 below the fuselage (Ref. AMM TASK 08-22-00-200-001).
(d) Install the 98F05003000002 TARGET-MEASUREMENT at reference point 12.
(e) Install the laser device on the rear target arm.
To do this, engage the spring-loaded location pin in the first notch.
(f) Adjust the lateral position of the rear target on the ground.
1 Point the laser beam to point 11.
2 Point the laser beam to the 98F05003000002 TARGET-MEASUREMENT (installed at point 12).
3 Make sure that the laser beam points along the centerline of points 11 and 12. If necessary, adjust the lateral position of the rear target.
4 If the lateral distance between these two reference points is more than 10 mm (0.39 in.), do step (f) again.
(g) Remove the laser device from the rear target arm.
Be very careful not to move the rear target. If the rear target moves, do steps (f) and (g) again.
(3) Lift the NLG axle.
(a) Put a thick layer of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) on the pivoting cup of the axle jack.
(b) Lift the NLG axle sufficiently to turn the two wheels (Ref. AMM TASK 07-12-00-582-001).
NOTE: You must make sure that the wheel travel is clear because there can be an unwanted movement of the NLG.
(4) Refer to the manufacturer's instructions to install and set the nose-wheel alignment tool. (5) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(6) Make sure that the nose-wheel steering handwheels and the rudder pedals are in the neutral position.
(7) Pressurize the Yellow hydraulic system
(Ref. AMM TASK 29-10-00-863-002) or (Ref. AMM TASK 29-24-00-863-001).
C. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 32-51-00-865-113-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY | 4GG | M36 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/CTL | 3GG | M35 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/CTL | 1GG | M34 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY | 2GG | M33 |
D. Open, safety and tag this(these) circuit breaker(s):
Subtask 32-51-00-860-106-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/OIL/PRESS | 2EN2 | N42 |
| 121VU | ENGINE/ENG1/OIL/PRESS | 2EN1 | N40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | OIL/PRESS/ENG2 | 10KC2 | N42 |
| 121VU | OIL/PRESS/ENG1 | 10KC1 | N40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/OIL/PRESS/AND REV SNSR/CHAN A | 2EN2 | N42 |
| 121VU | ENGINE/ENG1/OIL/PRESS/AND REV SNSR/CHAN A | 2EN1 | N40 |
E. Safety Precautions
(1) On the center pedestal, on the ENG panel (115VU):
(a) Put a WARNING NOTICE(S) in position to tell persons that the two thrust reverser control-levers are not operational.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 2EN1 and 2EN2 are open.
Subtask 32-51-00-860-106-B ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel (115VU):
(a) Put a WARNING NOTICE(S) in position to tell persons that the two thrust reverser control-levers are not operational.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 2EN1 and 2EN2 are open.
NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.
E. Safety Precautions
(1) On the center pedestal, on the ENG panel (115VU):
(a) Put a WARNING NOTICE(S) in position to tell persons that the two thrust reverser control-levers are not operational.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 10KC1 and 10KC2 are open.
4. Procedure(1) On the center pedestal, on the ENG panel (115VU):
(a) Put a WARNING NOTICE(S) in position to tell persons that the two thrust reverser control-levers are not operational.
(2) Put a WARNING NOTICE(S) in position in the cockpit to tell persons that circuit breakers 10KC1 and 10KC2 are open.
NOTE: The open status of circuit breakers 10KC1 and 10KC2 makes the engine thrust reversers unserviceable.
Subtask 32-51-00-220-067-A
A. Check of the N/WS Zero Position (with the Nose-Wheel Alignment Tool)
(1) Use the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT and the manufacturer's instructions to measure the N/WS position.
(2) Make sure that the N/WS angle is zero degrees plus or minus 0.5 degrees.
(a) If the angle is not zero degrees plus or minus 0.5 degrees, do the adjustment of the N/WS zero position (Ref. AMM TASK 32-51-00-820-003).
5. Close-up(1) Use the JT2000AIRBUS TOOL-NOSE WHEEL ALIGNMENT and the manufacturer's instructions to measure the N/WS position.
(2) Make sure that the N/WS angle is zero degrees plus or minus 0.5 degrees.
(a) If the angle is not zero degrees plus or minus 0.5 degrees, do the adjustment of the N/WS zero position (Ref. AMM TASK 32-51-00-820-003).
Subtask 32-51-00-865-112-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 32-51-00-865-114-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY | 4GG | M36 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS2/CTL | 3GG | M35 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/CTL | 1GG | M34 |
| 121VU | HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY | 2GG | M33 |
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 32-51-00-860-082-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/OIL/PRESS | 2EN2 | N42 |
| 121VU | ENGINE/ENG1/OIL/PRESS | 2EN1 | N40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | OIL/PRESS/ENG2 | 10KC2 | N42 |
| 121VU | OIL/PRESS/ENG1 | 10KC1 | N40 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG2/OIL/PRESS/AND REV SNSR/CHAN A | 2EN2 | N42 |
| 121VU | ENGINE/ENG1/OIL/PRESS/AND REV SNSR/CHAN A | 2EN1 | N40 |
C. Aircraft Maintenance Configuration
(1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(5) Make sure that circuit breakers 2EN1 and 2EN2 are closed.
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 32-51-00-860-082-B ** ON A/C NOT FOR ALL (1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Green hydraulic system (Ref. AMM TASK 29-10-00-864-001) or (Ref. AMM TASK 29-23-00-864-001).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(5) Make sure that circuit breakers 2EN1 and 2EN2 are closed.
NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.
(6) Close the radome (Ref. AMM TASK 53-15-11-410-001). (7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
C. Aircraft Maintenance Configuration
(1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(5) Make sure that circuit breakers 2EN1 and 2EN2 are closed.
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
Subtask 32-51-00-860-082-C ** ON A/C NOT FOR ALL (1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 2EN1 and 2EN2.
(5) Make sure that circuit breakers 2EN1 and 2EN2 are closed.
NOTE: The open status of circuit breakers 2EN1 and 2EN2 makes the engine thrust reversers unserviceable.
(6) Close the radome (Ref. AMM TASK 53-15-11-410-001). (7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
C. Aircraft Maintenance Configuration
(1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 10KC1 and 10KC2.
(5) Make sure that circuit breakers 10KC1 and 10KC2 are closed.
(7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Lower the aircraft on its wheels and remove the axle jack (Ref. AMM TASK 07-12-00-582-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).
(4) Remove the warning notice(s) from circuit breakers 10KC1 and 10KC2.
(5) Make sure that circuit breakers 10KC1 and 10KC2 are closed.
NOTE: The open status of circuit breakers 10KC1 and 10KC2 makes the engine thrust reversers unserviceable.
(6) Close the radome (Ref. AMM TASK 53-15-11-410-001). (7) Remove the ground support and maintenance equipment, the special and standard tools and all other items.