(2)
The second task is the installation of the hook actuator on the lower lobe cargo door.
TASK 52-34-07-004-001
2. Hook Actuator - Removal_______________________
A. Special Tools and Equipment
(1)
G12001-50 Rig Pin Kit (Preferred) ~................................................................... | Pin | Designation | Length (inch) | Dia (inch) | Qty | ..................................................................... | -6 | LCD-1 | 3.0 | 0.187 | 2 | 2..........….................…................…..............…......1
(2)
MIT65B04000 Kit (Rigging Pins) (Optional) ~................................................................... | Pin | Designation | Length (inch) | Dia (inch) | Qty | ..................................................................... | -17 | LCD-1 | 3.0 | 0.187 | 2 | 2..........….................…................…..............…......1
B.
References
(1)
52-34-00/001, Forward/Aft Cargo Door
(2)
52-34-00/801, Forward/Aft Cargo Door
(3)
AIPC 52-34-07 Fig. 2, AIPC 52-34-07 Fig. 3
(4)
SSM 52-34-01, 52-35-01
(5)
WDM 52-34-11, 52-35-11
C.
Access
(1)
Location Zone 122 Forward Cargo Container Compartment, Forward Half 142 Aft Cargo Container Compartment
(2)
Access Panel
821R Door - Forward Cargo Compartment
822R Door - Aft Cargo Compartment
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
HOOK MECHANISM SEE A
WIRE TO THE HOOK ACTUATOR
FWD
TUBE 1. TORQUE BRACKET 2. SUPPORT ACTUATOR 3. HOOK TUBE 4. TORQUE SPRING 7. HOOK RETURN 5. CLAMPS 6. BEARINGA
B C 8. BEARING HOUSING
C 13. HOOK
13. HOOK B FWD 12. PUSHROD HOOK MECHANISM A A 11. COUPLING 9. PUSHROD 10. BELLCRANK
Hook Actuator Figure 401 (Sheet 1)
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A
747-400
MAINTENANCE MANUAL
3. HOOK
ACTUATOR RIG PIN
HOLE
SHIM DOORFRAME 13. HOOK
RIB DOOR
BRACKET 2. SUPPORT
OUTBD A-A HOOK ACTUATOR SUPPORT (4 LOCATIONS) 18. NUT 17. WASHER 16. WASHER 15. MOUNTING BOLT B-B RIG PIN HOLE LOCATION
13. HOOK 0.001 TO 0.032 INCH 13. HOOK AND AFT HOOKS CLEARANCE AT THE FORWARD
HOLE (LCD-1) RIG PIN STOP BOLT HOOK-OPEN
STOP BOLT HOOK-OPEN DOORFRAME
CLEARANCE TO GET THE NECESSARY ADJUST THESE WASHERS
RIGGED CLOSED POSITION RIGGED OPEN POSITION
C-C
Hook Actuator Figure 401 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
D. Procedure
S 014-025
CAUTION:_______IN CASE THE DOOR DOES NOT OPEN, STOP IMMEDIATELY. DO NOT OPERATE THE DOOR CONTROL SWITCH. HOLDING THE DOOR CONTROL SWITCH MAY DAMAGE THE ACTUATOR. WAIT AT LEAST 1 MINUTE BEFORE SECOND ATTEMPT. IF THE DOOR STILL DOES NOT OPEN, WAIT AT LEAST 10 MINUTES BEFORE THIRD ATTEMPTL.
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