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A
747-400
MAINTENANCE MANUAL
INDEX NO. PART NAME DIM. DESIGN LIMITS WEAR LIMITS PART REPLACE WORN REPAIR WORN PART REPAIR INSTR.
DIAMETER DIM. WEAR PER-MITTED 3 DIAM CLEAR-MAX ANCE
MIN MAX
1 BUSHING ID 0.875 0.879 0.8790 0.0049 X
BUSHING 1 OD 0.873 0.874 0.8710 X
2 BUSHING ID 0.750 0.751 0.7535 0.0047 X
BOLT OD 0.748 0.749 0.7465 X 2
3 BEARING ID 0.7495 0.7500 X
BOLT OD 0.7480 0.7490 X 2
4 BUSHING ID 1.000 1.001 1.006 0.008 X
BUSHING OD 0.997 0.998 0.995 X
5 BUSHING ID 0.876 0.877 0.880 0.0059 X
BOLT OD 0.873 0.874 0.871 X 2
6 BEARING ID 0.8745 0.8750 0.878 0.0039 X
BOLT OD 0.873 0.874 0.871 X 2
CLAMP UP BUSHING.
REFER TO OVERHAUL MANUAL.
LLIMITS SHOWN MAY BE EXCEEDED PROVIDED MAXIMUM CLEARANCE IS NOT EXCEEDED.
Body Gear Truck Positioning Actuator Wear Limits
Figure 601 (Sheet 2)
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747-400 MAINTENANCE MANUAL
BODY GEAR TRUCK POSITIONING PRESSURE REDUCING VALVE -
_____________________________________________________ REMOVAL/INSTALLATION
____________________
1. General
A. This procedure has two tasks:
(1)
The removal of the positioning pressure reducing valve (referred as the pressure valve) for the body gear truck.
(2)
The installation of the pressure valve for the body gear truck.
TASK 32-13-16-004-001
2. The Body 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)
32-13-15/401, Body Gear Truck Positioning Actuator
(5)
IPC 32-13-16 Fig. 1
B.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
C.
Prepare for the procedure
S 844-024
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (Ref 32-00-30/201).
S 844-025
(2)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (Ref 32-00-30/201).
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747-400 MAINTENANCE MANUAL
1480 BULKHEAD
SEE A
(RIGHT SIDE ONLY)
(LEFT SIDE ONLY)
(LEFT SIDE SHOWN
RIGHT SIDE OPPOSITE)
(STATION 1480 BULKHEAD)
A
1480 BULKHEAD
MOUNTING BOLTS
PRESSURE RELIEF VALVE
B
Body Gear Truck Positioner Pressure Reducing Valve Figure 401
HYDRAULIC FUSE
TRUCK POSITIONING PRESSURE REDUCING VALVE
SEE B
UP FWD
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