32-11-81
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 434-051
(28)
Install lockwire on the hydraulic return line (14), and the bleeder plugs (16), (17), and (19).
S 734-054
(29)
Do a check on the level of the reservoir fluid of the hydraulic system (AMM 29-15-00/001).
S 844-052
(30)
If it is not necessary to have hydraulic power, stop the source.
S 584-026
(31)
Lower the main gear and remove the axle jack (AMM 07-11-31/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
MAIN GEAR DAMPER - ADJUSTMENT/TEST
__________________________________
1. General
A. This procedure adjusts and tests the main gear damper.
TASK 32-11-81-705-001
2. Main Gear Damper Adjustment
___________________________
A. References
(1)
AMM 07-11-31/201, Jack Airplane Axles
B.
Access
(1)
Location Zone
235 Left Main Gear Wheel Well
236 Right Main Gear Wheel Well
C.
Adjust the Main Gear Damper
S 225-003
(1) Measure the distance from the end cap of the damper housing to the head of the damper piston (Fig. 501).
NOTE: Under normal condition the damper piston head maybe position
____ outside the dimensions shown in Fig. 501. The location of the piston is important when the torque on the apex nut is set in the following steps.
S 225-004
(2) If the head of the damper piston is not within the dimensions or does not come out of the housing, do the following steps:
NOTE: The head of the damper piston must go through the outer
____ surface of the damper housing before you tighten the apex nut.
(a)
Lift the main landing gear on axle jack (AMM 07-11-31/201).
(b)
Use a length of wood to turn the wheels around until the piston head will come out of the damper housing.
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A 737-300/400/500MAINTENANCE MANUAL
UPPER TORSION LINK
PLUGS BLEED CHECKNUT CONNECTION HYDRAULIC
LOCKWASHER
LOCKBOLT APEX NUT
LINK TORSION SEE LOWER MAIN GEAR DAMPER A
0.50 0.10 HOUSING DAMPER MAIN GEAR
PISTON DAMPER HEAD OF
GLAND NUT
A
Figure 501 Main Gear Damper Adjustment
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32-11-81
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A
737-300/400/500MAINTENANCE MANUAL
(c)
Turn the lower torsion link until the piston head is within the dimensions shown in Fig. 501.
(d)
Remove the lockwire from the lockbolt to the checknut.
(e)
Remove the lockbolt and tighten the apex nut of the torsion link 400 to 500 pound-inches.
(f)
Loosen the apex nut to zero torque.
(g)
Tighten the apex nut to 50-150 pound-inches until the next available hole in the apex nut aligns with a hole in the lockwasher.
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