B
Wing Landing Gear Door-Operated Sequence Valve Installation
Figure 401 (Sheet 2)
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32-32-02
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A
747-400 MAINTENANCE MANUAL
(h) Move the valve outboard.
NOTE: This will remove all the load between the valve clevis
____
and the link (9).
(i)
Disconnect the bolt (3) that holds the link to the clevis.
(j)
Remove the valve.
(k)
Remove the hydraulic fittings from the valve.
(l)
Install plugs on the valve ports.
TASK 32-32-02-404-006
3. Wing Landing Gear Door-Operated Sequence Valve Installation
___________________________________________________________
A. Special Tools and Equipment
(1)
G12001 Kit (Rigging Pins) ~............................................................ | Rigging Pin No. | Length (inch) | Diameter (inch)| .............................................................. | WD-1 | 3.25 | 0.185 to 0.188| .............................................................. | WD-2 | 3.25 | 0.185 to 0.188| 2...................…....................…...................1
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)
32-12-01/401, Wing Gear Wheel Well Outboard Door
(5)
IPC 32-32-02 Fig. 3
D.
Access
(1)
Location Zone
135 Wing Landing Gear Well, LH
136 Wing Landing Gear Well, RH
E.
Procedure
S 424-007
(1)
Install the valve (Fig. 401):
(a)
Install the hydraulic fittings with new O-rings and backup rings in the ports of the valve. 1) Lubricate the O-rings, the backup rings and the fittings
with Skydrol Assembly Lube when you install them.
(b)
Put the valve in the approximate position with the clevis end of the valve aligned with the link (9) in the carrier.
(c)
Install the bolt (3) with the countersunk washer adjacent to the bolt head and the plain washer adjacent to the nut.
(d)
Tighten the nut to 25-50 pound-inches.
(e)
Install the four bolts (4) that connect the carrier to the valve with thin washers adjacent to the bolt head and the nut.
(f)
Tighten the nuts to 25-50 pound-inches.
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MAINTENANCE MANUAL
(g)
Install the bolts (2) into the nutplates on the structure with thin washers adjacent to the bolt heads.
(h)
Remove the caps and plugs from the hydraulic lines.
(i)
Connect the hydraulic lines 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.
(2) Install the ground locks in all landing gear (Ref 09-11-00/201).
S 864-015
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERRS, 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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