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A
747-400
MAINTENANCE MANUAL
SEE A STRUCTURE SUPPORT
KEEL BEAM
A
A HINGE FITTING
BOLT
C LINK STABILITY
WELL FOR THE WHEEL INBOARD DOOR C B B STRIKE BOARD
OUTBOARD DOOR
FOR THE WHEEL
TRACK
WELL ASSEMBLY FWD OUTBD
A
Strike Board Wear Limits for the Wing Gear Door Figure 601 (Sheet 1)
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6. BOLT/BUSHING 6. BOLT/BUSHING
5. BOLT/BUSHING 5. BOLT/BUSHING
3. BOLT/BEARING
7. SPACER/BUSHING 7. SPACER/BUSHING
C-C
Strike Board Wear Limits for the Wing Gear Door Figure 601 (Sheet 2)
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INDEX NO. PART NAME DIM. DESIGN LIMITS WEAR LIMITS REPLACE PART WORN REPAIR WORN PART INSTR REPAIR
DIAMETER 5DIM. WEAR PER-MITTED DIA MAX CLEAR-ANCE
MIN MAX
1 BUSHING ID 0.8750 0.8765 0.8915 0.020 X 1
BOLT OD 0.8739 0.8744 0.8589 X
2 BUSHING ID 1.1250 1.1265 1.1415 0.020 X 2
BOLT OD 1.1239 1.1244 1.1189 X
3 BEARING ID 0.8743 0.8750 0.8793 0.0050 X
BOLT OD 0.8739 0.8744 0.8694 X
4 BEARING ID 0.4993 0.5000 0.5043 0.020 X
BOLT OD 0.4989 0.4994 0.4944 X
5 BUSHING ID 0.5637 0.5647 0.5737 0.020 X 3
BOLT OD 0.5610 0.5615 0.5460 X
6 BUSHING ID 0.5637 0.5647 0.5737 0.020 X 3
BOLT OD 0.5610 0.5615 0.5490 X
7 BUSHING ID 1.0000 1.0015 1.0160 0.020 X 4
SPACER OD 0.9980 0.9990 0.9830 X
8 BUSHING ID 0.7525 0.7535 0.7685 0.020 X 1
ROLLER OD 0.7500 0.7510 0.7450 X
Strike Board Wear Limits for the Wing Gear Door
Figure 601 (Sheet 3)
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OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0004 TO 0.0023 INCH. MAXIMUM OVERSIZE BUSHING AND HOLE IN FITTING IS 0.0625 INCH OVER DESIGN LIMITS.
OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0006 TO 0.0026 INCH. MAXIMUM OVERSIZE BUSHING AND HOLE IN FITTING IS 0.0625 INCH OVER DESIGN LIMITS.
OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0003 TO 0.0020 INCH. MAXIMUM OVERSIZE BUSHING AND HOLE IN FITTING IS 0.0625 INCH OVER DESIGN LIMITS.
OBTAIN BUSHING. INSTALL BUSHING PER 20-11-01 WITH INTERFERENCE FIT OF 0.0005 TO 0.0025 INCH. MAXIMUM OVERSIZE BUSHING AND HOLE IN FITTING IS 0.0625 INCH OVER DESIGN LIMITS.
LIMITS SHOWN MAY BE EXCEEDED PROVIDED MAXIMUM CLEARANCE IS NOT EXCEEDED.
Strike Board Wear Limits for the Wing Gear Door
Figure 601 (Sheet 4)
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