Wing Gear Truck Mechanical Lock Wear Limits
Figure 601 (Sheet 4)
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A
747-400
MAINTENANCE MANUAL
NO. INDEX PART NAME DIM. DESIGN LIMITS WEAR LIMITS WORN PART REPLACE PART WORN REPAIR INSTR. REPAIR
DIAMETER DIM. ALLOWED WEAR 10 ANCE MAX CLEAR-DIAM
MIN MAX
11 BUSHING ID 0.2500 0.2540 0.2550 0.0065 X
BOLT OD 0.2485 0.2495 0.2475 X
12 BUSHING ID 0.2500 0.2540 0.2550 0.0065 X
BOLT OD 0.2485 0.2495 0.2475 X
13 BEARING ID 0.4993 0.5000 0.5003 0.0006 X
BUSHING OD 0.4997 0.5002 0.4995 X
14 BUSHING 3 0.680 0.682 0.686 0.008 X
BUSHING 8 0.678 0.680 0.674 X
15 FRAME ID 4.6250 4.6260 4.6303 0.0073 X 9
BUSHING OD 4.6230 4.6240 4.6187 X
16 BUSHING ID 4.5010 4.5020 4.5063 0.0073 X
SUPPORT OD 4.4990 4.5000 4.4947 X 9
Wing Gear Truck Mechanical Lock Wear Limits
Figure 601 (Sheet 5)
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747-400
MAINTENANCE MANUAL
SLOT IN LINK WIDTH OF BEARING GAP BETWEEN FLANGES OF BUSHING DISTANCE FROM LARGE SHOULDER TO MIDDLE SHOULDER OF HOOK DISTANCE BETWEEN UNFLANGED SURFACES OF FRAME PLUS THICKNESS OF WASHER AT LARGE SHOULDER
OF HOOK, MINUS THICKNESS OF WASHER AT MIDDLE SHOULDER OF HOOK
DISTANCE FROM LARGE SHOULDER TO SMALL SHOULDER OF HOOK PLUS POSSIBLE ONE-SIXTH TURN BACK
OF NUT
DISTANCE FROM FACE OF BUSHING TO FACE OF WASHER
LENGTH OF BUSHING
REFER TO OVERHAUL MANUAL FOR REPAIR INFORMATION
LIMITS SHOWN MAY BE EXCEEDED PROVIDED MAXIMUM CLEARANCE IS NOT EXCEEDED
Wing Gear Truck Mechanical Lock Wear Limits
Figure 601 (Sheet 6)
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747-400 MAINTENANCE MANUAL
WING GEAR TRUCK POSITIONING PRESSURE REDUCING VALVE
___________________________________________________ REMOVAL/INSTALLATION
____________________
1. General
_______
A. This procedure has two tasks:
(1)
The removal of the pressure reducing valve for the wing landing gear (referred to as the pressure valve).
(2)
The installation of the pressure valve.
B.
The pressure valve is attached to a bracket on the aft wall of the wheel well of the wing landing gear.
TASK 32-11-24-004-001
2. Wing Gear Truck Positioning Pressure Reducing Valve Removal (Fig. 401)
__________________________________________________________
A. References
(1)
09-11-00/201, Towing
(2)
29-11-00/201, Main Hydraulic Supply System
(3)
32-00-30/201, Landing Gear Door Locks
(4)
32-11-20/401, Wing Gear Truck Positioning Actuator
(5) 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 2(53)
