S 822-012
(11)
Adjust the position of the latch alignment stripes and arrows as follows:
(a) Do a visual check of the latch alignment stripes and arrows.
(b) Make sure the aligned position of the latch alignment stripes
and arrows are per View D.
(c) If it is necessary, move the temporary latch alignment arrow
inboard or outboard to get the aligned position.
NOTE:____ Do not move the latch alignment stripe to adjust the
aligned position.
S 012-013
(12)
Open the cargo door electrically to the vertical position (Ref 52-34-00/001).
S 862-034
(13)
Turn the latch cams to the close position as follows:
(a)
Manually turn the hooks to the hook closed position approximately 15 turns or until the hook position switch starts.
(b)
Hold the door control switch in the closed position approximately 3 seconds until the hooks turn to the closed position.
(c)
Manually push and hold the plunger of the door closed switch and the door control switch in the closed position.
NOTE: The latch cams will turn electrically to the full closed
____ position.
S 862-043
(14)
Open these circuit breakers for the applicable cargo door and attach DO-NOT-CLOSE tags:
(a)
P59 Aft Equipment Panel 1) AFT CARGO DOOR POWER UNITS
(b)
P414 Power Distribution Center - Left 1) 414A21 LOWER CARGO DOOR FWD 2) 414F15 CARGO DOOR CONTROL FWD 3) 414F16 CARGO DOOR CONTROL AFT
S 022-014
(15) Remove the temporary marker (if it was used) from the latch pin fitting.
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S 422-039
(16)
Install the permanent latch alignment arrow on the latch pin fitting.
S 422-004
(17)
Rub the the latch alignment stripe and arrow to remove all the air bubbles and to assure a good bond.
S 862-015
(18)
Remove the DO-NOT-CLOSE tags and close these circuit breakers for the applicable cargo door:
(a)
P59 Aft Equipment Panel
1) AFT CARGO DOOR POWER UNITS
(b)
P414 Power Distribution Center - Left 1) 414A21 LOWER CARGO DOOR FWD 2) 414F15 CARGO DOOR CONTROL FWD 3) 414F16 CARGO DOOR CONTROL AFT
S 862-053
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.
(19)
Open the cargo door electrically an additional 3 feet to turn the hooks and cams to the open position.
S 862-005
(20)
Close the cargo door.
TASK 52-34-21-372-016
4. Latch Alignment Stripes and Arrows - Painting_____________________________________________
A. Consumable Materials
(1)
B00148 Solvent - Ethyl Alcohol
(2)
Sealant - BMS 10-11 (Type I and Type II)
B.
References
(1)
52-34-00/001, Forward/Aft Cargo Door
C.
Access
(1)
Location Zone 122 Forward Cargo Container Compartment, Forward Half 142 Aft Cargo Container Compartment
(2)
Access Panels
821R Door - Forward Cargo Compartment
822R Door - Aft Cargo Compartment
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747-400
MAINTENANCE MANUAL
D. Procedure
S 862-048
(1)
Open the cargo door electrically to the vertical position
(Ref 52-34-00/001).
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