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747-400 MAINTENANCE MANUAL
S 786-008
(4) Do a test for the jackscrew access door (AMM 52-49-05/401).
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747-400 MAINTENANCE MANUAL
PNEUMATIC SYSTEM GROUND SERVICE ACCESS DOOR - REMOVAL/INSTALLATION
__________________________________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The removal of the service door for the pneumatic system
(2)
The installation of the service door for the pneumatic system.
TASK 52-49-06-004-001
2. Pneumatic System Ground Service Access Door Removal (Fig. 401)___________________________________________________
A. References
(1)
IPC 52-49-06 Fig. 2
B.
Access
(1)
Location Zone 193 Fairing Wing to Body, Aft Lower Half, LH
C.
Procedure
S 024-002
(1)
Remove the door.
(a)
Remove the bonding jumper from the hinge.
(b)
Remove the bolts from the hinges.
(c)
Remove the door from the airplane.
TASK 52-49-06-404-003
3. Pneumatic System Ground Service Access Door Inatallation (Fig. 401)________________________________________________________
A. References
(1)
51-21-04/701, Alodized Surfaces
(2)
51-24-04/701, Abrasion-Resistant Teflon Coating
(3)
IPC 52-49-06 Fig. 2
B.
Access
(1)
Location Zone 193 Fairing Wing to Body, Aft Lower Half, LH
C.
Procedure
S 424-004
(1)
Install the door.
(a)
Connect the door to the hinges with the bolts, the nuts and the washers.
(b)
Connect the bonding jumper to the door.
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747-400
MAINTENANCE MANUAL
BONDING
JUMPER SEE A
A
DOOR
A
BOLT
INBD
(6 LOCATIONS)
FWD
A
HINGE
0.25 INCH MIN OVERLAP 0.25
INCH LATCH BLOCK
0.06 |0.03
PUSH HERE TO DO A
INCH CLEARANCE CHECK OF THE LATCH. THE SURFACE OF THE DOOR THE LATCH BOLT MUST ALIGNS WITH THE SUR-MOVE 0.01 TO 0.03 INCH FACE OF THE FUSELAGE
|0.03 INCH.
A-A
Pneumatic System Ground Service Access Door Installation Figure 401
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(c) See that the door moves freely and easily around its hinges.
S 214-013
(2) Examine the finish on the structure that touches the door. (a) See that the abrasion-resistant finish is satisfactory. (b) Apply an abrasion-resistant finish that is 0.010 inch thick if it is necessary (Ref 51-24-04/701).
S 714-012
(3) Do a check of the latch adjustment. (a) Close but do not latch the door. (b) Push up at the latch until the door aligns with the fuselage between -0.03 and +0.03 inch.
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