B.
Consumable Materials

 (1)  
D00288 Lubricant - MCS 352 (Skydrol Assembly Lube)

 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)  
IPC 32-32-04 Fig. 2

 D.
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 E.
Procedure

 S 434-029
 (1)  
Install the hydraulic fittings in the sequence valve:

 (a)  
Lubricate the new O-rings and the backup rings, and the hydraulic fittings.

 NOTE: You can use the Skydrol Assembly Lube or the hydraulic
____
 fluid.

 (b)  Install the hydraulic fittings, the O-rings and the backup rings in the ports of the sequence valve.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-32-04
 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 424-030
 (2)  
Install the sequence valve (Fig. 401):

 (a)  
Connect the link (11) to the valve (14) with the bolt (12), the nut and the washers.

 (b)  
Install the clevis assembly (10) and the lever (7), to the valve body with the four bolts (3) and the washers.

 (c)  
If the bolt heads have holes, install the lockwires.

 (d)  
Attach the link (11) to the lever (7) with the bolt (9), the nut and the washers.

 (e)  
Install the top cover (5) on the clevis assembly (10).

 (f)  
Put the valve in the correct position.

 (g)  
Push the roller (4) against the striker arm (1) until the mounting holes in the valve and the structure align.

 NOTE: You can remove the striker arm plates (14) to help align
____ the holes. You must install the plates after you attach the sequence valve.
 (h)  
Install the valve attach bolts (2 and 13).

 (i)  
Remove the caps and plugs from the hydraulic components.

 (j)  
Connect the hydraulic lines to the valve.

 S 824-008
 (3)  
Adjust the sequence valve mechanism:

 (a)  
Install the rigging pin through the holes in the clevis assembly and the link. 1) Install or remove the striker arm plates (14) to permit the

 easy installation of the rigging pin.
 CAUTION:_______MAKE SURE YOU REMOVE THE RIGGING PIN. FAILURE TO REMOVE THE RIGGING PIN WILL CAUSE DAMAGE TO THE MECHANISM IF THE DOOR OPERATES.
 (b)  Remove the rigging pin.
 1)  Install or the remove striker arm plates (14) to permit the easy removal of the rigging pin.
 S 094-009
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO REMOVE
_______ THE DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Do this task: "Wing Landing Gear Door Lock Removal" (Ref 32-00-30/201).

 S 094-031

 (5)  
Do this task: "Body Landing Gear Door Lock Removal" (Ref 32-00-30/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-32-04
 ALL  ú ú 01 Page 406 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 494-010
 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.
 (6)  Make sure you install the ground locks in all landing gear (Ref 09-11-00/201).
 S 864-032
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
　
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