52-34-11
ALL ú ú 01 Page 406 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
MASTER LATCH LOCK HANDLE - MAINTENANCE PRACTICES
________________________________________________
1. General_______
A. This procedure contains five tasks:
(1)
The removal of the master latch lock handle
(2)
The installation of the master latch lock handle
(3)
The adjustment of the master latch lock handle
(4)
Approved repairs for the master latch lock handle
(5)
An inspection/check of the master latch lock handle.
TASK 52-34-12-002-001
2. Remove the Master Latch Lock Handle (Fig. 201)___________________________________
A. General
(1)
This task refers to the master latch lock handle as "the handle".
B.
References
(1)
IPC 52-34-12
C.
Access
(1)
Location Zone 122 Forward Cargo Container Compartment, Forward Half 142 Aft Cargo Container Compartment
(2)
Access Panel
821R Door - Forward Cargo Compartment
822R Door - Aft Cargo Compartment
D.
Procedure
S 862-003
(1)
Put the handle in the open position.
S 032-004
(2)
Disconnect the control rod from the crank (Detail A).
(3)
Remove the shaft from the handle (Detail B).
S 032-005
NOTE: Do not disconnect the crank from the shaft.
____
S 022-006
(4)
Remove the handle from the door.
S 032-007
(5)
If it is necessary, remove these parts from the handle (Details B and C):
(a)
Remove the rivet that goes through the driver and the handle (Detail B).
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52-34-12
ALL ú ú 01 Page 201 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
SEE A
A
A
MASTER LATCH LOCK HANDLE BSEE C FWD
LATCH CAM SEE D
A
Master Latch Lock Handle Installation Figure 201 (Sheet 1)
D07625
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52-34-12
ALL ú ú 01 Page 202 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WASHER
(2 LOCATIONS)
PIN (INSTALL WITH A COTTER PIN)
HANDLE CRANKWASHER
BUSHING
SHAFT
TRIGGER
PACKING
HANDLE STOP (INSTALL WITHBUSHING NUT, WASHER,
AND LOCKWIRE)
RIVET
BACR15BB35B-24
(MS 204705B-24
OPTIONAL)
NUT
DRIVER (TIGHTEN TO 310
|60 POUND-INCHES)
WASHER
BUSHING CARGO DOOR
WASHER
8.0 +0.6/-0.3
DOOR STOP
INCHES
B
PRESSURE RELIEF DOOR (OPEN)
PRESSURE RELIEF DOOR (CLOSED)
BELLCRANK
CARGO DOOR
A-AMaster Latch Lock Handle Installation Figure 201 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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A
747-400 MAINTENANCE MANUAL
LATCH RELEASE NUT
ADJUST THE STOP BOLT TO OBTAIN MAKE SURE THE CONTOUR OF THE
THE DIMENSION AS SHOWN. TRIGGER ALIGNS WITH THE CONTOUR
OF THE HANDLE |0.03 INCH. ADD OR
REMOVE THIN WASHERS TO SET THIS
DIMENSION
Master Latch Lock Handle Installation
Figure 201 (Sheet 3)
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