S 226-007
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A
747-400 MAINTENANCE MANUAL
SEE B
UPLOCK ACTUATOR
SEQUENCE VALVE ACTUATOR ROD
SEE C
SEE A
UPLOCK ROLLER
2.53 2.52
1 (0.010 MAX THICK) THE HARD CHROME PLATE FOR REPAIR, YOU CAN FULL WIDTH ALL AROUND WHERE THE HOOK TOUCHES THE ROLLER HOOK A 1
Wing Gear Uplock Wear Limits Figure 601 (Sheet 1)
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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 2 MAX ANCE CLEAR-DIAM
MIN MAX
1 BUSHING ID 0.4995 0.5000 0.5040 0.0050 X
PIN OD 0.4980 0.4990 0.4950 X
2 BUSHING ID 0.4370 0.4375 0.4410 0.0040 X
BOLT OD 0.4360 0.4370 0.4335 X
3 HOOK ID 2.520 2.530 2.570 0.080 X
ROLLER OD 2.490 2.510 2.470 X
THE PART DIMENSION CAN BE MORE THAN THE LIMITS SHOWN BUT NOT MORE THAN THE MAXIMUM CLEARANCE.
Wing Gear Uplock Wear Limits
Figure 601 (Sheet 2)
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747-400 MAINTENANCE MANUAL
S 226-008
(4)
Compare these dimensions to the limit dimensions.
S 966-006
(5)
If the part is not in tolerance, repair or replace the part.
S 226-005
(6)
Examine these parts for rust and corrosion:
(a)
The uplock hook and the roller
(b)
The rod end bolt and bushing of the actuator
(c)
The head end bolt and bushing of the actuator.
S 426-003
(7) Install the uplock actuator on the uplock mechanism (Ref 32-32-08/401).
TASK 32-32-08-206-009
3. Inspection of the Uplock Mechanism for the Wing Landing Gear____________________________________________________________
NOTE: This is a scheduled maintenance task.
____
A. Procedure
S 216-010
(1)
Examine these parts for rust and corrosion:
(a)
The uplock hook and the roller
(b)
The rod end bolt and bushing of the actuator
(c)
The head end bolt and bushing of the actuator.
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747-400 MAINTENANCE MANUAL
WING LANDING GEAR UPLOCK HOOK - REMOVAL/INSTALLATION
____________________________________________________
1. General
_______
A. This procedure has these two tasks:
(1)
Uplock Hook Removal
(2)
Uplock Hook Installation.
TASK 32-32-09-004-042
2. Wing Landing Gear Uplock Hook Removal (Fig. 401)
_____________________________________
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