747-400 AMM 飞机维护手册 NACELLES/PYLONS(101)

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 S 035-008
 (7)  Turn the latch tension adjusters counterclockwise and loosen all the latches.
 NOTE:____ Do not apply more than 25 pound-inches (2.8 N.m) torque to the adjusters on the right door.
 S 035-009
 (8)  Remove the shim washers from the stops on the left door.
 S 825-010
 (9)  Do these steps to adjust the No. 2 latch on the outboard doors: (a) Close the doors and engage the No. 2 latch hook with the keeper and close the latch.
 (b)  Turn the latch tension adjuster clockwise until there is no clearance between the latch hook and keeper.
 NOTE:____ The latch is closed when the latch handle is flush with the door fairing surface of the door.
 (c) (d) (e)  Measure the gap between the T/E door and the thrust reverser to strut fairing on the right and left doors (Fig. 501 dimension A).If dimension A is different by more than 0.020 inches (0.5 mm) between the right and left doors, adjust the door as follows: 1) Move the position of the shear fitting on the serrated plate.Measure the gap (Fig. 501 dimension B) between the left T/E door and the rub pads on the strut aft bulkhead.
 (f)  NOTE: Make this measurement after you have no gap____ dimension B) on the right door.Remove the shims from the shear fittings on the right door until there is no gap (dimension B) on the left door.

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 54-62-03
 ALL  ú ú 02 Page 507 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 435-011
 (10)
 Install the eight shear fittings on the left side door of the outboard struts.

 S 825-012

 (11)
 On left door, align the shear fittings on the serrated plates with shear fittings on right door.

 S 825-013

 (12)
 Close the T/E doors (AMM 54-62-00/201).

 S 835-037

 (13)
 Close all the latches and turn the latch tension adjusters clockwise until there is no clearance between the latch hook and keeper.

 NOTE: The latch is closed when the latch handle is flush with the
____
 fairing surface of the door.

 S 825-014
 (14) Look at the adjuster nut on the latch.
 (a)  
If the nut has a hex-head, tighten the latch tension adjusters to 195-205 pound-inches (22.0-23.2 N.m), to set the preload on the keepers.

 (b)  
If the nut has a square-head, tighten the latch tension adjusters to 40-50 pound-inches (4.5-5.7 N.m), to set the preload on the keepers.

 S 825-017
 (15)
 Recheck fair tolerances.

 (16)
 Adjust the door if it is necessary.

 (17)
 Apply primer to all bare metal after adjustments.

 S 825-018
 S 375-019
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 54-62-03
 ALL  ú ú 02 Page 508 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-042
 (18)
 On the inboard strut doors, perform the following steps.

 S 035-041

 (19)
 Turn the keeper adjusters counterclockwise to the fully extended position on the right door. Remove the shim washers from the stops.

 NOTE: Do not apply more than 25 pound-inches (2.8 N.m) torque to
____
 the adjusters on the right door.

 S 225-043
 (20)
 Adjust the shear fittings on serrations on the left door to align with the shear fittings on the right door.

 S 415-044

 (21)
 Close and latch the door by adjusting the keepers (turning clockwise) until the clearances between the latch hooks and keepers are taken up (no gap).

 S 415-045

 (22)
 The latch is closed when the latch handle is flush with the fairing surface.

 S 225-046

 (23)
 Do a check of the door fair and gaps.

 S 435-047

 (24)
 Adjust keepers as required and do a check of the gaps between stops (5 places). Add and adjust shims as required to eliminate gaps.
　
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