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 ALL  ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

B-B
Wing Gear Door Strike Board Installation Figure 401 (Sheet 2)
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 32-12-03
 ALL  ú ú 01 Page 403 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 494-014
 (3)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (Ref 32-00-30/201).

 D.
Procedure

 S 644-018
 (1)  Prior to strike board installation, lubricate strike board rollers (AMM 12-21-01/301, figure 314).
 NOTE: Do not apply grease to upper surface of strike board at
____
 this time.

 S 034-005
 (2)  
Remove the stability link from the hinge fitting for the support structure.

 S 024-006

 (3)  
Move the strike board out from the tracks to remove the stability link and the strike board.

 TASK 32-12-03-404-007
 3. Wing Gear Wheel Well Door Strike Board Installation (Fig. 401 and 402)
___________________________________________________
 A. References
 (1)  
32-00-30/201, Landing Gear Door Locks

 (2)  
IPC 32-12-03 Fig. 1

 B.
Access

 (1)  
Location Zone 731 Wing Landing Gear Door, LH, Center Section Inboard Panel 741 Wing Landing Gear Door, RH, Center Section Inboard Panel

 C.
Procedure

 S 424-008
 (1)  
Move the strike board (with stability link attached) into the tracks.

 (a)  
Install the stability link to the hinge fitting with the bolts, the washers, the nuts and the cotter pins.

 (b)  
Install the countersunk washer below the bolt head.

 S 434-009
 (2)  Use the minimum necessary quantity of the nuts to install the cotter pin.
 NOTE: Use the minimum number of washers to keep a clearance of
____ 0.01 - 0.06 inch below the nut.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SEE B
SEE A WING GEAR
OUTBOARD DOOR WHEEL WELL
RADIUS ROD OUTBOARD DOOR
INBD
A
LINK ASSEMBLY FWD
SEQUENCE VALVE COVER SEQUENCE VALVELINK CARRIER
POINT A
(RIG PIN HOLE)

SEQUENCE VALVE
LINKAGE ROD

POINT B
ROD END FITTING INBD
RADIUS ROD FWD
B
Wing Gear Door Operated Sequence Valve
Figure 402

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 824-010
 (3)  
Adjust the strike board as shown on Fig. 401.

 (a)  
Install the rigging pin at point A through the two sides of the link carrier and the link assembly.

 (b)  
Disconnect the linkage rod of the sequence valve from the rod end fitting at point B.

 (c)  
Loosen the bolts.

 NOTE: Adjust the hinge fitting of the strike board aft and
____ front to get a dimension of 0.60 to 0.70 inch (section A-A, Fig. 401).
 (d)  
Adjust the hinge fitting vertically to get a maximum dimension of 13.35 inches and a minimum dimension of 1.55-inches (section B-B).
　
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