52-32-09
ALL ú ú 03 Page 406 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
B. Standard Tools and Equipment
(1)
Torque Wrench (with dial indicator) - 0 to 25 pound-inches (for manual cranking of latch actuator)
C.
Consumable Materials
(1)
D00013 Grease - MIL-G-23827
D.
Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 |Latch Actuator | 52-32-09| 02 | 685 | | | 2 |Torque Tube Section | | | 585 | | | 3 |Torque Tube Section | | | 610 | | | 4 |Lower Latch Pushrod | | | 355 | | | 5 |Bolt | | | 320 | | | 6 |Washer | | | 330 | | | 7 |Bushing | | | 345 | | | 8 |Washer | | | 350 | | | 9 |Nut | | | 340 | | | 10 |Clamp | | | 520 | | | 11 |Bolt | | | 495 | | | 12 |Washer | | | 500 | | | 13 |Washer | | | 505 | | | 14 |Nut | | | 510 | | | 15 |Stop Lever | | | 575 | | | 16 |Bolt | | | 550 | | | 17 |Washer | | | 560 | | | 18 |Washer | | | 565 | | | 19 |Nut | | | 570 | | | 20 |Adapter | | | 680 | | | 21 |Mounting Bolt | | | 690 | | | 22 |Washer | | | 695 | | | 23 |Nut | | | 700 | 2......…........…...................................…..........….......….......1
E. References
(1)
12-21-04/301, Door
(2)
52-32-00/501, Side Cargo Door
(3)
SSM 52-32-01
(4)
WDM 52-32-11, 52-32-21
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52-32-09
ALL ú ú 03 Page 407 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
F. Access
(1)
Location Zone
261 Main Deck STA 1720 To STA 2040, LH
(2)
Access Panel
836L Door - Main Deck Cargo
G.
Procedure
S 724-011
(1)
Examine the torque necessary to turn each lower latch through its full range of motion with the pushrods disconnected (Fig. 401).
S 214-036
(2)
Make sure the torque is not more than 55 pound-inches.
S 864-037
(3)
If the torque is more than 55 pound-inches, clean and lubricate the lower latches (Ref 12-21-04/301).
NOTE: Refer to the OHM 52-36-75 for the repair procedure
____
if it is necessary.
S 864-012
(4)
Do these steps to make sure the stop bolts are not against the stop lever (15) (View B-B):
(a)
Loosen the jamnuts.
(b)
Turn the stop bolts against the jamnuts.
S 864-013
(5)
Install the SCD-3 rig pin through one cam on each of the five latch shafts to set the latch cams in the rigged closed position (View B).
S 864-014
(6)
Set the latch actuator (1) in the rigged closed position as follows (Fig. 402):
CAUTION: DO NOT USE MORE THAN 70 POUND-INCHES OF TORQUE WHEN YOU
_______ TURN THE ACTUATOR IN THE CLOCKWISE DIRECTION. IF YOU USE MORE THAN 70 POUND-INCHES OF TORQUE, YOU CAN CAUSE INTERNAL DAMAGE TO THE ACTUATOR.
(a) Use a torque wrench with a dial indicator to manually turn the actuator in the closed direction (clockwise).
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