(2)  
The installation of the air conditioning access doors on the fuselage.

 TASK 52-48-01-004-001
 2. Air Conditioning Access Door Removal (Fig. 401)
____________________________________
 A. References
 (1)  
IPC 52-48-01

 B.
Access

 (1)  
Location Zone
 133 Air Conditioning Equipment Bay Left
 134 Air Conditioning Equipment Bay Right

 (2)  
Access Panel
 191AL Door - Air Conditioning Access
 191EL Panel - Air Conditioning Access
 191HL Door - Air Conditioning Access
 191ML Panel - Air Conditioning Access
 191NL Door - Air Conditioning Access
 192AR Door - Air Conditioning Access
 192ER Panel - Air Conditioning Access
 192HR Door - Air Conditioning Access
 192MR Panel - Air Conditioning Access

 C.
Procedure

 S 014-014
 (1)  
Open the door.

 S 864-024

 (2)  
On doors with a hold-open rod,
 move the collar to hold the door open.

 (3)
Remove the covers from the forward end of the hinges (Detail F).

 S 034-016
 NOTE: There are not covers on the hinges of the aft, left,
____
 outboard door.

 S 024-004
 (4)  
Remove the door.

 (a)  
Disconnect the bonding jumpers from the door.

 (b)  
On doors with a hold-open rod, disconnect the hold-open rod at the door.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 52-48-01
 ALL  ú ú 01 Page 401 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

SEE  A  1239 STA 
STA 1112  SEE STA 1170  B  FWD 
STA 1045 
SEE  E 
SEE  E 
SEE  E 
SEE  E  A  FASTENERS (4 LOCATIONS) 
HOLD-OPEN ROD  COLLAR  HINGE ONLY) THE CENTER SHIM (ON 
SEE  D  C 
HINGE (3 LOCATIONS)  FWD  SEE  C  WASHER  HINGE ONLY) SPACERS (ON THE CENTER 
B  HINGE PIN  D  SHIM  CASTELLATIONS NUT WITH WASHER 
Air Conditioning Access Door Installation Figure 401 (Sheet 1) 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
AIR CONDITIONING
DUCT
HOLD-OPEN
ROD ROD ATTACH
BONDING BRACKET ON THE DOOR
JUMPERS
B
COLLAR ROD ATTACH BRACKET ON THE STRUCTURE
C B
HINGE (3 LOCATIONS) C
SEE F
A
LATCH (9 LOCATIONS)
A
DOOR
FWD
SHIM
E
LATCH
DOOR  HINGE PIN
SHIM
NUT WITH CASTELLATIONS
PRESS THE LATCH  F
TRIGGER COVERTO SEE THE FREE PLAY
LATCH TYPICAL  SELF LOCKING NUT
A-A
BONDING FLAT SEAL ANGLEHOLD OPEN JUMPER WASHER0.02 INCH ROD MINIMUM
SUPPORT STRUCTURE
HINGE FITTING OR COVER
FILLER
DOOR
(CLOSED)  LATCH (IN THE
OPEN POSITION) BOLT

B-B C-C Air Conditioning Access Door Installation Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 403 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (c)  
While you hold the door, remove the hinge pins.
　
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