DOC AIRBUS | AMM A320FLubrication of Nose Landing Gear and Doors
TASK 12-22-32-640-002-A
Lubrication of Nose Landing Gear and Doors
Refer to the MPD TASK: 322000-01
LUBRICATION OF NOSE LANDING GEAR AND DOORS
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 12-22-32-941-051-A
Subtask 12-22-32-640-053-B
(a) Lubricate greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
(d) NLG table:
(e) NLG door and uplocks table:
(3) Remove the unwanted grease:
(a) Clean the greasers with a clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
Subtask 12-22-32-640-060-A ** ON A/C NOT FOR ALL
NLG with the Lock Plate on the Torque-Link Center Hinge-Pin and One Greaser on the Cam Pivot of the Weight-on-Wheels Sensor - Lubrication Points ** ON A/C NOT FOR ALL
(a) Lubricate greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
1 Do not apply grease to the chrome surfaces of the actuator piston rods.
(c) Lubricate the greasers of all the other items given in the table until new grease comes out.
(d) NLG table:
(e) NLG door and uplocks table:
(3) Remove the unwanted grease:
(a) Clean the greasers with a clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
Subtask 12-22-32-640-059-A ** ON A/C NOT FOR ALL
NLG with Two Greasers on the Cam Pivot of the Weight-on-Wheels Sensor - Lubrication Points ** ON A/C NOT FOR ALL
(a) Lubricate the greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment.
1 Use the hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment.
1 Use the hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate the greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
(d) NLG table:
(e) NLG door and uplocks table:
(3) Remove the unwanted grease:
(a) Clean the greasers with clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
5. Close-up
Subtask 12-22-32-410-051-A
[Rev.10 from 2021]
2026.04.01 04:23:07 UTC
Lubrication of Nose Landing Gear and Doors
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:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobRefer to the MPD TASK: 322000-01
LUBRICATION OF NOSE LANDING GEAR AND DOORS
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 2M (6 FT) |
| No specific | AR | LUBRICATING EQUIPMENT |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | 1 | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.02ABA1) | Phosphate Ester Hydraulic Fluid-General Power - - |
| (Material No.03GBB1) | Synthetic Oil base Grease-General Purpose Clay Thickened - |
| (Material No.03GBC1) | Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - |
| (Material No.03HBD9) | Synthetic Ester base Grease-General Purpose Low Temp - |
| (Material No.08BAA9) | Non Aqueous Cleaner-General - - |
| (Material No.08BBB1) | Non Aqueous Cleaner-- Petroleum Based - |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 711 | NOSE GEAR |
| 713 | MAIN DOORS |
| 714 | MAIN DOORS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 32-00-00-481-001-A | Installation of the Safety Devices on the Landing Gears |
| TASK 32-00-00-481-002-A | Installation of the Safety Devices on the Landing Gear Doors |
| TASK 32-22-00-010-001-A | Nose Gear Doors - Ground Doors Opening |
| TASK 32-22-00-410-001-A | Nose Gear Doors - Ground Doors Closing |
| TASK 12-22-00-00 | LUBRICATION - DESCRIPTION AND OPERATION |
| NLG without the Lock Plate on the Torque-Link Center Hinge-Pin - Lubrication Points ** ON A/C NOT FOR ALL | |
Subtask 12-22-32-941-051-A
A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
Subtask 12-22-32-010-051-A (1) Put the SAFETY BARRIER(S) in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:
- make sure that the landing-gear control-lever (6GA) is in the DOWN position
- put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
B. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) in position adjacent to the Nose Landing Gear (NLG).
(2) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
(3) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is installed in each NLG door (Ref. AMM TASK 32-00-00-481-002).
Subtask 12-22-32-640-056-A (1) Put the ACCESS PLATFORM 2M (6 FT) in position adjacent to the Nose Landing Gear (NLG).
(2) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
(3) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is installed in each NLG door (Ref. AMM TASK 32-00-00-481-002).
C. Preparation of the Equipment
(1) Make sure the LUBRICATING EQUIPMENT is in the correct condition before you fill it.
(2) Operate the LUBRICATING EQUIPMENT to make sure the lines and adaptor are full of new lubricant.
(3) Clean the greasers:
4. Procedure(1) Make sure the LUBRICATING EQUIPMENT is in the correct condition before you fill it.
(2) Operate the LUBRICATING EQUIPMENT to make sure the lines and adaptor are full of new lubricant.
(3) Clean the greasers:
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
(a) Clean the greasers with a clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) . Subtask 12-22-32-640-053-B
CAUTION:
DO NOT OPERATE POWER-OPERATED LUBRICATION EQUIPMENT AT MORE THAN 207 bars (3000 psi). HIGH LUBRICATION PRESSURE CAN CAUSE DAMAGE TO THE AIRCRAFT.
CAUTION:
FOR LUBRICATION OF THE GLAND HOUSING ON THE LANDING GEAR BOTTOM-BEARING, USE ONLY HAND-OPERATED LUBRICATION EQUIPMENT. POWER-OPERATED LUBRICATION EQUIPMENT CAN CAUSE EXTRUSION OF THE LANDING-GEAR BOTTOM-BEARING SCRAPER-SEAL.
A. Lubrication of Nose Landing Gear and Doors NOTE: This subtask is only applicable for the NLG without the lock plate on the torque-link center-hinge pin.
NOTE: Refer to the figures together with the Tables that follow to find the greasers.
NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).
(1) Lubricate the NLG door and uplock with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows: (a) Lubricate greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
NOTE: Grease must not be applied to the chrome surfaces of the actuator piston rods.
(c) Lubricate the greasers of all the other items given in the table until new grease comes out. (d) NLG table:
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | Upper Drag-Strut | 4 | 2 on the drag-strut (one on each side) 1 on each attachment pin. |
| 2 | Self-Aligning Bearings | 2 | 2 on the aircraft structure (one on each side). |
| 3 | Lockstay Middle Axis | 2 | 1 on the attachment pin 1 on the lockstay lower arm. |
| 4 | Retraction Actuator | 4 | 1 at one end of the actuator 3 on the retraction actuator pin. |
| 5 | Leg Upper Attachments | 6 | 1 on each attachment pin 2 on the adjacent aircraft structure for the swivel bearings (one on each side) 2 on the NLG leg (one on each side). |
| 6 | Lockstay to the NLG Leg Attachment | 4 | 2 on the NLG leg 2 on the lockstay upper arm. |
| 7 | Nosewheel Steering Actuator | 1 | 1 on the actuator. |
| 8 | Drag-Strut to the Leg Attachment | 3 | 2 on the NLG leg 1 on the bottom arm of the drag- strut. |
| 9 | Drag-Strut to the Lockstay Attachment | 10 | 2 on the drag-strut bottom arm 1 on the bottom arm pin 2 on the drag-strut 2 on the ball joint 1 on the strut link-pin 1 on the uplock roller pin 1 on the lockstay lower arm. |
| 10 | Torque Links | 12 | 4 on the top torque link 2 on the turning tube (near the upper torque link connector) 2 on the center hinge pin 4 on the bottom torque link. |
| 11 | Cam Pivot for NLG Weight-on-Wheels Sensor | 1 | 1 on the cam pivot pin. |
| 12 | Downlock Release Actuator | 2 | 1 on one end of the actuator 1 on the attachment pin on the NLG leg. |
| 13 | NLG Leg to the Rotating Rod Attachment | 2 | 2 on the NLG leg (one on each side). |
| 14 | NLG Leg Barrel Lower Bearing | 2 | 2 on the NLG leg. |
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | NLG Door Uplock | 4 | 3 on the aft side 1 on the forward side. |
| 2 | NLG Gear Uplock | 3 | 2 on one side 1 on the other side. |
| 3 | Rotating Rod Assembly | 8 | 2 on the lower attachment pins 6 on the rotating rods. |
| 4 | NLG Door Actuating Cylinder | 2 | 1 on the support bracket attachment-pin 1 on the bellcrank lever attachment-pin. |
| 5 | NLG Bellcrank Assembly | 1 | 1 on the forward side of the roller pin. |
(3) Remove the unwanted grease:
(a) Clean the greasers with a clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
CAUTION:
DO NOT OPERATE POWER-OPERATED LUBRICATION EQUIPMENT AT MORE THAN 207 bars (3000 psi). HIGH LUBRICATION PRESSURE CAN CAUSE DAMAGE TO THE AIRCRAFT.
CAUTION:
FOR LUBRICATION OF THE GLAND HOUSING ON THE LANDING GEAR BOTTOM-BEARING, USE ONLY HAND-OPERATED LUBRICATION EQUIPMENT. POWER-OPERATED LUBRICATION EQUIPMENT CAN CAUSE EXTRUSION OF THE LANDING-GEAR BOTTOM-BEARING SCRAPER-SEAL.
B. Lubrication of Nose Landing Gear and Doors NLG with the Lock Plate on the Torque-Link Center Hinge-Pin and One Greaser on the Cam Pivot of the Weight-on-Wheels Sensor - Lubrication Points ** ON A/C NOT FOR ALL NOTE: This subtask is only applicable for the NLG with:
- The lock plate on the torque-link center-hinge pin and one greaser on greaser item 11 (cam pivot for the NLG weight-on-wheels sensor).
For the NLG: - Without the lock plate at torque-link center-hinge pin, go to Para. 4.A.
- With the lock plate on the torque-link center-hinge pin and two greasers on greaser item 11 (cam pivot for NLG weight-on-wheels sensor), go to Para. 4.C.
NOTE: Refer to the figures together with the Tables that follow to find the greasers.
NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).
(1) Lubricate the NLG door and uplock with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows: (a) Lubricate greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment. Use hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
1 Do not apply grease to the chrome surfaces of the actuator piston rods.
(c) Lubricate the greasers of all the other items given in the table until new grease comes out.
(d) NLG table:
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | Upper Drag-Strut | 4 | 2 on the drag-strut (one on each side) 1 on each attachment pin. |
| 2 | Self-Aligning Bearings | 2 | 2 on the aircraft structure (one on each side). |
| 3 | Lockstay Middle Axis | 2 | 1 on the attachment pin 1 on the lockstay lower arm. |
| 4 | Retraction Actuator | 4 | 1 at one end of the actuator 3 on the retraction actuator pin. |
| 5 | Leg Upper Attachments | 6 | 1 on each attachment pin 2 on the adjacent aircraft structure for the swivel bearings (one on each side) 2 on the NLG leg (one on each side). |
| 6 | Lockstay to the NLG Leg Attachment | 4 | 2 on the NLG leg 2 on the lockstay upper arm. |
| 7 | Nosewheel Steering Actuator | 1 | 1 on the actuator. |
| 8 | Drag-Strut to the Leg Attachment | 3 | 2 on the NLG leg 1 on the bottom arm of the drag- strut. |
| 9 | Drag-Strut to the Lockstay Attachment | 10 | 2 on the drag-strut bottom arm 1 on the bottom arm pin 2 on the drag-strut 2 on the ball joint 1 on the strut link-pin 1 on the uplock roller pin 1 on the lockstay lower arm. |
| 10 | Torque Links | 12 | 4 on the top torque link 2 on the turning tube (near the upper torque link connector) 2 on the center hinge pin 4 on the bottom torque link. |
| 11 | Cam Pivot for NLG Weight-on-Wheels Sensor | 1 | 1 on the cam pivot pin. |
| 12 | Downlock Release Actuator | 2 | 1 on one end of the actuator 1 on the attachment pin on the NLG leg. |
| 13 | NLG Leg to the Rotating Rod Attachment | 2 | 2 on the NLG leg (one on each side). |
| 14 | NLG Leg Barrel Lower Bearing | 2 | 2 on the NLG leg. |
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | NLG Door Uplock | 4 | 3 on the aft side 1 on the forward side. |
| 2 | NLG Gear Uplock | 3 | 2 on one side 1 on the other side. |
| 3 | Rotating Rod Assembly | 8 | 2 on the lower attachment pins 6 on the rotating rods. |
| 4 | NLG Door Actuating Cylinder | 2 | 1 on the support bracket attachment-pin 1 on the bellcrank lever attachment-pin. |
| 5 | NLG Bellcrank Assembly | 1 | 1 on the forward side of the roller pin. |
(3) Remove the unwanted grease:
(a) Clean the greasers with a clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
CAUTION:
DO NOT OPERATE POWER-OPERATED LUBRICATION EQUIPMENT AT MORE THAN 207 bars (3000 psi). HIGH LUBRICATION PRESSURE CAN CAUSE DAMAGE TO THE AIRCRAFT.
CAUTION:
FOR LUBRICATION OF THE GLAND HOUSING ON THE LANDING GEAR BOTTOM-BEARING, USE ONLY HAND-OPERATED LUBRICATION EQUIPMENT. POWER-OPERATED LUBRICATION EQUIPMENT CAN CAUSE EXTRUSION OF THE LANDING-GEAR BOTTOM-BEARING SCRAPER-SEAL.
C. Lubrication of Nose Landing Gear and Doors NLG with Two Greasers on the Cam Pivot of the Weight-on-Wheels Sensor - Lubrication Points ** ON A/C NOT FOR ALL NOTE: This subtask is only applicable for the NLG with two greasers on greaser item 11 (cam pivot for NLG weight-on-wheels sensor). For the NLG with the one greaser on greaser item 11 (cam pivot for NLG weight-on-wheels sensor), go to Para. 4.B.
NOTE: Refer to the figures together with the Tables that follow to find the greasers.
NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).
(1) Lubricate the NLG door and uplock with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows: (a) Lubricate the greaser items 1 and 2 in the NLG door and uplocks table with hand-operated lubrication equipment.
1 Use the hand-operated lubrication equipment to lubricate each greaser with a maximum of two full strokes.
(b) Lubricate the greasers of all the other items given in the table until new grease comes out.
(2) Lubricate the NLG with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-General Purpose Lithium Thickened Low Temp. - (Material No.03GBC1) as follows:
(a) Lubricate greaser items 1, 2, 5, 7 and 10 (only on the turning tube) in the NLG table with hand-operated lubrication equipment.
1 Use the hand-operated lubrication equipment to lubricate the greaser with a maximum of three full strokes.
(b) Lubricate the greaser item 4 only at the end of the retraction actuator with the hand-operated lubrication equipment.
NOTE: Grease must not be applied to the chrome surfaces of the actuator piston rods.
(c) Lubricate the greasers of all the other items given in the table until new grease comes out. (d) NLG table:
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | Upper Drag-Strut | 4 | 2 on the drag-strut (one on each side) 1 on each attachment pin. |
| 2 | Self-Aligning Bearings | 2 | 2 on the aircraft structure (one on each side). |
| 3 | Lockstay Middle Axis | 2 | 1 on the attachment pin 1 on the lockstay lower arm. |
| 4 | Retraction Actuator | 4 | 1 at one end of the actuator 3 on the retraction actuator pin. |
| 5 | Leg Upper Attachments | 6 | 1 on each attachment pin 2 on the adjacent aircraft structure for the swivel bearings (one on each side) 2 on the NLG leg (one on each side). |
| 6 | Lockstay to the NLG Leg Attachment | 4 | 2 on the NLG leg 2 on the lockstay upper arm. |
| 7 | Nosewheel Steering Actuator | 1 | 1 on the actuator. |
| 8 | Drag-Strut to the Leg Attachment | 3 | 2 on the NLG leg 1 on the bottom arm of the drag- strut. |
| 9 | Drag-Strut to the Lockstay Attachment | 10 | 2 on the drag-strut bottom arm 1 on the bottom arm pin 2 on the drag-strut 2 on the ball joint 1 on the strut link-pin 1 on the uplock roller pin 1 on the lockstay lower arm. |
| 10 | Torque Links | 12 | 4 on the top torque link 2 on the turning tube (near the upper torque link connector) 2 on the center hinge pin 4 on the bottom torque link. |
| 11 | Cam Pivot for NLG Weight-on-Wheels Sensor | 2 | 2 on the cam pivot pin (one on each side). |
| 12 | Downlock Release Actuator | 2 | 1 on one end of the actuator 1 on the attachment pin on the NLG leg. |
| 13 | NLG Leg to the Rotating Rod Attachment | 2 | 2 on the NLG leg (one on each side). |
| 14 | NLG Leg Barrel Lower Bearing | 2 | 2 on the NLG leg. |
| No. | Component/Location | Total | Position of Greasers |
|---|---|---|---|
| 1 | NLG Door Uplock | 4 | 3 on the aft side 1 on the forward side. |
| 2 | NLG Gear Uplock | 3 | 2 on one side 1 on the other side. |
| 3 | Rotating Rod Assembly | 8 | 2 on the lower attachment pins 6 on the rotating rods. |
| 4 | NLG Door Actuating Cylinder | 2 | 1 on the support bracket attachment-pin 1 on the bellcrank lever attachment-pin. |
| 5 | NLG Bellcrank Assembly | 1 | 1 on the forward side of the roller pin. |
(3) Remove the unwanted grease:
(a) Clean the greasers with clean Textile-Lint free Cotton - (Material No.14SBA1) and Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the greaser ball is installed correctly.
(4) Make sure that there is no grease on the chrome surfaces of the actuator piston rods.
(a) If grease is found on the chrome surfaces of the actuator piston rods:
1 Clean the chrome surfaces of the actuator piston rods with clean Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
2 Apply a thin layer of Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) with clean Textile-Lint free Cotton - (Material No.14SBA1) on the chrome surfaces of the actuator piston rods.
Subtask 12-22-32-410-051-A
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
Subtask 12-22-32-942-052-A (1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).
(3) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
B. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(1) Remove the SAFETY BARRIER(S).
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.