(1)
Open the door.
(2)
Remove the lining from the door (AMM 52-11-02/401).
(3)
Remove the maintenance access panel, forward of the door.
S 216-006
(4)
Examine the door for corrosion (Fig. 601).
(a)
Look at the external and internal skins for cracks and corrosion.
S 016-003
S 016-004
S 016-005
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 05 Page 601 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TORQUE TUBE DOOR LATCH MECHANISM HANDLE
LINK BELLCRANK
PAD DOOR STOP ROLLER LATCH UPPER ARM HINGE ARM GUIDE
SEE A BODY TORQUE TUBE PLATE GUIDE ANCHORPLATE RELEASE LEVER
UPPER SLEEVE
HOLD-OPEN FITTING
SEE B DOOR TORQUE TUBE
TORQUE TUBE DOOR LATCH CHAIN ACTUATOR POWER EMERGENCY SNUBBER ROTARY
DOOR 5 LOWER SLEEVE
ARM HINGE LOWER LOWER LINK
BODY TORQUE TUBE (DOOR 5)
A
Main Entry Doors - Inspection
Figure 601 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 01 Page 602 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
UPPER
HINGE
ARM
BEARING
UPPER
SHAFT
GUIDE
ARM
BEARING
ASSEMBLY
CONTROL UPPER AND
ROD LOWER COUPLING
CRANK
LOWER
SHAFT
BEARING
LOWER HINGE ARM
DOOR TORQUE TUBE (DOOR 5)
B
Main Entry Doors - Inspection Figure 601 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
52-11-09
ALL ú ú 01 Page 603 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(b)
Make sure the hinge covers are not loose and all the screws are installed.
(c)
Look at the frames, internal brackets, handle mechanism housing, and hinges forthe cracks, corrosion and loose bolts.
(d)
Look at the window and frame for cracks and corrosion.
(e)
Look at the components that follow for cracks, corrosion, loose bolts, and other damage. 1) The operational mechanism for the door 2) The door torque tube 3) The body torque tube 4) All bearings 5) All attachments.
(f)
Look at the latch rollers, latches, and door stops for cracks, corrosion and unwanted particles.
(g)
Look at the full opening of the door for corrosion.
NOTE: Make sure you look at the areas that use non-metallic
____ compounds to make a smooth surface for the seal.
(h) Look at the lower surface of lower gate, and the top surface of the upper gate for corrosion (Section A-A, Fig. 602).
S 356-014
(5)
If you find corrosion, repair the area as follows:
(a)
See the SRM 52-00-02, for the limits on the removal of material during a repair for corrosion.
(b)
See the CPM 52-10-47 Part 3, for the procedures to remove corrosion.
(c)
See the CPM 52-10-47 Part 2, for the protective finishes.
S 216-026
(6)
Examine the door.
(a)
Look at the drain holes for blockage.
(b)
Look at the door seals for cracks, damage, and other damage.
(c)
When you examine the door seals to find if there is air or noise leakage, look for these items: 1) The stains from the tobacco smoke on the door seals and
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(79)
