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32-33-02
ALL ú ú 01 Page 404 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
CAUTION: HOLD THE ROD WHEN YOU DISCONNECT IT FROM THE DOOR FITTING.
_______ THE SPRING LOAD IN THE VALVE CAN CAUSE DAMAGE TO THE BOLT OR THE VALVE SLIDE.
(d) Remove the bolt (7) to disconnect the rod (6) from the door fitting.
NOTE: Permit the rod and the valve to move to the door closed
____ position (valve slide extended).
(e)
Remove the bolts (9) that attach the carrier to the valve.
(f)
Remove the bolts (1) that attach the valve (2) to its bracket.
(g)
Move the valve outboard to remove the spring pressure.
(h)
Disconnect the bolt (11).
(i)
Remove the valve.
(j)
Remove the hydraulic fittings from the valve.
(k)
Install caps on the valve ports.
TASK 32-33-02-404-006
3. Body Landing Gear Door-Operated Sequence Valve Installation
___________________________________________________________
A. Special Tools and Equipment
(1)
G12001 Kit (Rigging Pins) ~................................................................ | Rigging Pin No. | Length (inch) | Diameter (inch) | .................................................................. | BD-3 | 3.25 | 0.185 to 0.188 | .................................................................. | BD-4 | 3.25 | 0.185 to 0.188 | 2....................….....................….....................1
B.
Consumable Materials
(1)
D00288 Lubricant - MCS352
C.
References
(1)
09-11-00/201, Towing
(2)
29-11-00/201, Main Hydraulic Supply System
(3)
32-00-30/201, Landing Gear Door Locks
(4)
32-14-00/501, Body Gear Doors
(5)
IPC 32-33-02 Fig. 2
D.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
E.
Procedure
S 434-047
(1)
Install the hydraulic fittings in the valve:
(a)
Lubricate the O-rings, the backup rings and the fittings with the lubricant.
(b)
Install the hydraulic fittings with new O-rings and backup rings in the ports of the valve.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-33-02
ALL ú ú 03 Page 405 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 424-046
(2)
Install the valve (Fig. 401):
(a)
Put the valve on the bracket with the clevis end of the valve aligned with the link (10).
(b)
Install the nylon washers (12) between the link and the clevis.
(c)
Install the bolt (11) with the countersunk washer adjacent to the bolt head.
(d)
Install the self-locking nut with the plain washer adjacent to it.
(e)
Tighten the nut to 25-50 pound-inches.
(f)
Install the four bolts (9) with the thin washers adjacent to the bolt head and the self-locking nut.
(g)
Tighten the nuts to 25-50 pound-inches.
(h)
Install the bolts (1) in the nutplates on the structure with thin washers adjacent to the bolt heads.
(i)
Remove the caps from the hydraulic hoses.
(j)
Connect the hydraulic hoses to the valve.
S 494-008
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Make sure you install the ground locks in all landing gear (Ref 09-11-00/201).
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