S 844-004
(4)
Release the pressure from the hydraulic system No. 4 (AMM 29-11-00/201).
S 034-005
WARNING: YOU MUST HOLD THE WALKING BEAM BEFORE YOU DISCONNECT IT.
_______ THIS WILL PREVENT POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE EQUIPMENT. THE WALKING BEAM WEIGHS APPROXIMATELY 40 POUNDS.
(5)
Remove the lockbolt (7), the nut, and the washer (8) from the bolt (9).
S 034-006
(6)
Remove the lockbolt (4), the nut, the washer (3), and the bolt (2) from the shock strut lug.
S 024-007
(7)
Lift the walking beam (1) off from the shock strut lug and remove it from the airplane.
TASK 32-11-15-404-008
3. Wing Gear Walking Beam Installation (Fig. 401)
__________________________________
A. Consumable Materials
(1)
D00633 Grease - BMS 3-33 (preferred)
(2)
D00013 Grease - MIL-G-23827 (optional)
B.
References
(1)
AMM 32-11-15/601, Wing Gear Actuator Walking Beam
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AIPC 32-11-15 Fig. 2
C.
Access
(1)
Location Zone
735 Wing Landing Gear, LH
745 Wing Landing Gear, RH
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A
747-400 MAINTENANCE MANUAL
D. Procedure
S 224-011
(1)
Examine the structural attach points for the permitted worn areas (AMM 32-11-15/601).
S 644-012
(2)
Lubricate the washer (8), the thread, and the shank of the bolt (9) with grease.
S 424-013
(3)
Set the walking beam (1) on the bolt (9) with the clevis inboard.
S 434-014
(4)
Install the washer (8) and the nut.
NOTE: Temporarily tighten the nut with your hand.
____
S 644-015
(5)
Lubricate the washers (3), the threads, and the shanks of the bolts
(2)
with grease.
S 434-016
(6)
Align the walking beam clevis with the lugs on the shock strut.
(a)
Install the bolt (2) with the end that has threads that points to the center.
S 434-017
(7)
Install the washer (3) and the nut.
(a)
Tighten the nut from 600 to 1200 pound-inches.
NOTE: Loosen the nut to the nearest castellation and install
____ the lockbolt (4), the washer, and the self-locking nut.
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A
747-400 MAINTENANCE MANUAL
S 434-018
(8)
Tighten the nut 600 to 1200 pound-inches on the walking beam support.
(a)
Loosen the nut to the nearest castellation and install the lockbolt (7).
NOTE: Tighten the self-locking nuts.
____
S 094-023
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(9)
Do this task: "Removal of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 094-024
(10)
Do this task: "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
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