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 3)  Turn the manual drive 1/2 turn counterclockwise
 NOTE:____ The internal stops are at this point.
 (b)  Turn the manual drive counterclockwise 9 turns.
 (c)  Adjust the hook closed switch as follows:
 1)  Measure the continuity through the hook closed switches.
 2)  Move the hook closed switch in its bracket until it opens.
 NOTE:____ You will know the switch opens when there is no
 continuity through it.

 S 864-024
 (10)
 Manually open the door sufficiently to get access to the hooks.

 S 824-022

 (11)
 Adjust the hook open switches as follows:

 NOTE: These steps are for the forward and the aft hook open
____ switches.
 (a)  Turn the manual drive for the hook actuator counterclockwise until it hits the internal stops as follows (Fig. 402): 1) Use a torque wrench with a dial indicator to manually turn
 the actuator counterclockwise at 25 |5 pound-inches torque. 2) Manually turn the actuator until the torque increases by 15-20 pound-inches. 3) Turn the manual drive 1/2 turn clockwise.
 NOTE: The internal stops are at this point.
____
 (b)  Turn the manual drive clockwise 7 turns.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 (c)  Adjust the hook open switches to operate at this point as follows: 1) Measure the continuity through the hook open switch. 2) Move the hook open switch in its bracket until it opens.
 NOTE: You will know the switch opens when there is no
____
 continuity through it.

 S 724-028
 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 ATTEMPT.
 (12)
 Operate the cargo door through one complete hook cycle to examine the if the hook pin engages correctly.

 S 824-026

 (13)
 If the hook does not engage and disengage the hook pin, adjust the hook mechanism (Ref 52-32-00/501).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 DOOR RESTRAINT SOLENOID - REMOVAL/INSTALLATION
______________________________________________
 1. General
_______
 A. This procedure contains two tasks:
 (1)  
The removal of the door restraint solenoid.

 (2)  
The installation of the door restraint solenoid.

 TASK 52-32-12-004-001
 2. Remove the Door Restraint Solenoid
__________________________________
 A. References
 (1)  
IPC 52-32-12 Fig. 1

 (2)  
SSM 52-32-01

 (3)  
WDM 52-32-21

 B.
Access

 (1)  
Location Zone
 261 Main Deck STA 1720 To STA 2040, LH

 (2)  
Access Panels
 836L Door - Main Deck Cargo

 C.
Remove the door restraint solenoid (Fig. 401)

 S 864-002
 (1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P415 Power Distribution Center - Right 1) 415F17 SIDE CARGO DOOR CONT

 (b)  
P715 Aux/Ext No. 2 Power Center
 1) SIDE CARGO DOOR PWR

 (2)  
Disconnect electrical connector DX214 or DX215 from the solenoid.

 (3)  
Disconnect the eyebolt from the door restraint arm.

 (4)
Remove the bolts that hold the solenoid to the door frame.

 (5)  
Remove the solenoid.

 S 024-004
 S 034-005
 S 034-006
 S 024-019
 NOTE: Look at the initial position of the solenoid, you will
　
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