32-11-25
ALL ú ú 01 Page 207 ú Jun 20/95
A
757 MAINTENANCE MANUAL
TASK 32-11-25-962-001
3. Active Seal Replacement with the Spare Seals
____________________________________________
NOTE: The truck or the inner cylinder of the shock strut do not have to be
____
moved to do this task.
A. Equipment
(1)
Lower Bearing Seal Retainer Puller Equipment,
MLG - B32025-75
(2)
Shock Strut Drain Equipment, MLG/NLG - A32066-1
(3)
Spanner Wrench, MLG - A32045-83
B.
Consumable Materials
(1)
C00913 Compound - BMS3-27
(2)
D00212 Hydraulic Fluid - MIL-H-5606 or
MIL-H-6083 (optional)
(3)
D00467 Fluid, Landing gear shock strut -BMS32-32, Type II
(4)
D00128 Lubricant, Petrolatum - VV-P-236
(5)
D00633 Grease - BMS 3-33 (Recommended)
(6)
D00013 Grease - MIL-G-23827 (Alternative)
C.
References
(1)
AMM 07-11-01/201, Jacking Airplane
(2)
AMM 07-11-03/201, Jacking Airplane Axles
(3)
AMM 12-15-01/301, Main Gear Shock Strut
(4)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(5)
AMM 32-00-15/201, Landing Gear Door Locks
(6)
AMM 32-00-20/201, Landing Gear Downlocks
(7)
AMM 32-11-16/401, Main Gear Torsion Links
D.
Access
(1)
Location Zones
731/741 Main Landing Gear (MLG)
732/742 MLG Body Doors
733/743 MLG Oleo Doors
E.
Prepare to Replace the Seals
S 492-007
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
32-11-25
ALL ú ú 01 Page 208 ú Jan 28/00
A
757
MAINTENANCE MANUAL
S 492-002
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
S 862-008
(3)
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).
S 862-009
WARNING: CLEAR THE AREA BELOW THE WING BEFORE YOU DEFLATE THE SHOCK
_______ STRUT. IF YOU DEFLATE ONE SHOCK STRUT, THE WING TIP CAN MOVE DOWN AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(4)
Deflate the shock strut.
(a)
Remove the cap for the air valve.
WARNING:_______LOOSEN THE AIR VALVE NUT A MAXIMUM OF TWO TURNS. AIR PRESSURE CAN BLOW THE VALVE OFF AND CAN CAUSE INJURY TO PERSONS.
(b)
Loosen the nut for the air valve, two turns.
(c)
Let the shock strut deflate fully.
(d)
Install a flexible hose on the valve. Put the other end of the hose in a drain bucket to catch the hydraulic fluid.
(e)
Loosen the air valve nut fully.
S 842-010
(5) Use a drip tray to catch the hydraulic fluid when you open the oil charging valve and remove the gland nut.
32-11-25
ALL ú ú 01 Page 209 ú May 28/01
A
757
MAINTENANCE MANUAL
S 492-011 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 1(125)
