S 015-005
(5)
Remove the upper hinge cover on the inner side of the door.
S 015-007
(6)
Remove the maintenance access panel from the outer side of the airplane on the forward side of the door.
S 015-033
(7)
Remove the hinge covers that are forward and aft of the body torque tube (Ref 52-11-14/401).
S 015-037
(8)
Remove the stop pin locking clips and loosen all the door stop pins (this includes the lower gate stop pins).
(9)
Remove the centering guide from the door (Detail E, Fig. 501).
S 015-038
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 04 Page 502 ú Feb 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
F. Procedure
S 825-056
(1)
Adjust the vertical position of the door (Fig. 501 and Fig. 502).
(a)
Close and latch the door.
(b)
Loosen and then tighten the coupling bolt (1, Detail B) to remove the vertical play in the torque tube joints.
(c)
Do this step if it is necessary to lift the door:
1) Loosen the upper adjusting nut (3) and tighten the lower adjusting nut.
(d)
Do this step if it is necessary to lower the door:
1) Loosen the lower adjusting nut (3) and tighten the upper adjusting nut.
(e)
Make sure the skin clearance is as shown in Fig. 502.
(f)
Make sure the centerline of each door stop pin (18 locations on the vertical sides of the door) is in a 0.30 inch diameter circle on the stop pad (Section C-C).
(g)
Tighten the upper and lower adjusting nut until there is no vertical play in the torque tube.
(h)
Lock the tab washers on the upper and the lower adjusting nuts (3, Detail B).
S 825-040
(2)
Adjust the latch and the latch fitting (Detail C).
(a)
Retract the door warning switch plunger 1) Remove the switch cover 2) Manually push the switch plunger and temporary keep it in
its retracted position.
(b)
Move the handle toward the closed position until you can disconnect the upper and lower gate pushrods.
(c)
Disconnect the upper and lower gate pushrods.
CAUTION: MANUALLY LIFT THE LOWER GATE WHEN YOU CLOSE THE DOOR WITH
_______ THE LOWER PUSHROD DISCONNECTED. DO NOT TRY TO CLOSE THE DOOR WITH THE LOWER GATE DOWN. THIS CAN CAUSE DAMAGE TO THE SPLINE TORQUE SHAFT ON THE GIRT BAR MECHANISM.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 03 Page 503 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
UPPER
HINGE
ARM
DOOR MAIN ENTRY TORQUE 1. COUPLING
DOOR 5 TUBE
BOLT SEE A
BEARING PLATE
3. ADJUSTING NUTS
UPPER GATE PUSHROD
SEE F LATCH ROLLER
AND LATCH FITTING
WIRE BUNDLE 2. PUSHROD
RETRACTION SEE C
MECHANISM
SEE J COCKING
STOP PIN CRANK
SEE D
GUIDE ARM
COVER HINGE SEE I DOOR TORQUE TUBE
HOLD-0PEN
LATCH B
SEE G
CENTERING DOOR TORQUE
GUIDE TUBE
SEE B
SEE E
SEAR PIN
TORQUE TUBE SEE H
COVER
(IF INSTALLED) LOWER HINGE
HINGE COVER
LOWER GATE PUSHROD
FWD
MAIN ENTRY DOOR A
Main Entry Door 5 Adjustment Figure 501 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 01 Page 504 ú Feb 10/94
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747-400 AMM 飞机维护手册 舱门 DOORS 1(70)
