(b)
Get the shims and remove laminations if it is necessary.
NOTE:____The thickness of these shims is important. The space between the aft bushing and the bushing in the structure must be as small as possible.
(c)
Maximum permitted clearance is 0.015 inch.
S 424-006
(2) Install the housing.
(a)
Apply grease to the pins, the shims, the inboard side of the housing and the bearing plate.
(b)
Install the housing in the airplane structure.
(c)
Put the pins through the housing.
(d)
Put the shims into the airplane structure.
(e)
Install the lockbolts.
S 224-007
(3) You must get the inboard clearance dimension as shown in View B-B.
(a) Make sure that the housing touches the bearing plate.
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(b) Look for any spaces between housing and bearing plate.
NOTE:____ The maximum permitted tolerance is 0.010 inch.
(c) If the tolerance is more than the maximum permitted, the housing is not serviceable.
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747-400 MAINTENANCE MANUAL
WING GEAR FORWARD TRUNNION BEARING HOUSING - INSPECTION/CHECK
_____________________________________________________________
TASK 57-43-01-206-007
1. Wing Gear Forward Trunnion Bearing Housing - Inspection_______________________________________________________
A. General
(1) This data consists of illustations and wear limits charts. No procedure is given in this section for access to permit inspection. For this information, refer to Removal/Installation.
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MAINTENANCE MANUAL
NO. INDEX PART NAME DIM. DESIGN LIMITS WEAR LIMITS WORN PART REPLACE PART WORN REPAIR INSTR. REPAIR
DIAMETER ALLOWED DIM. WEAR MAX ANCE CLEAR-DIAM
MIN MAX
1 1 HOUSING ID 6.9998 7.0016 7.0043 0.0083 X 3
OUTER RACE OD 6.9960 6.9980 6.9933 X
1 2 HOUSING ID 6.9998 7.0016 7.0050 0.0083 X 3
OUTER RACE OD 6.9956 6.9972 6.9933 X
2 BUSHING ID 1.7500 1.7515 1.7540 0.0066 X
PIN OD 1.7475 1.7480 1.7450 X 3
OUTER RACE WITHOUT LUBRICATION GROOVES OUTER RACE WITH LUBRICATION GROOVES REPAIR PER OVERHAUL MANUAL
Wing Gear Forward Trunnion Bearing Housing
Figure 601
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G58838
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747-400 MAINTENANCE MANUAL
NACELLE STRUT ATTACH FITTINGS - DESCRIPTION AND OPERATION
_________________________________________________________
1. General_______
A. The nacelle strut attach fittings transmit engine loads to the wing main frame, where each attach fitting load is distributed by internal backup structure. Fittings are provided for the inboard and outboard nacelles on each outboard wing.
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