32-31-01
ALL ú ú 01 Page 413 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
G. Put the Airplane to Its Usual Condition.
S 864-046
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6 Main Power Distribution Panel
1) 6E23 F/O PNL LT
2) 6L19, TE FLAP ELEC CONT OTBD
3) 6L20, TE FLAP ELEC CONT INBD
4) 6L21, LE FLAP ELEC CONT GRP B DRIVE 1
5) 6L22, LE FLAP ELEC CONT GRP A DRIVE 2
(b)
P7, Overhead Circuit Breaker Panel
1) 7C10, FLT CONT ELEC 2L AC
2) 7C11, FLT CONT ELEC 2L DC
3) 7C12, FLT CONT ELEC 1L AC
4) 7C13, FLT CONT ELEC 1L DC
5) 7C14, FLT CONT ELEC 1R AC
6) 7C15, FLT CONT ELEC 1R DC
7) 7C16, FLT CONT ELEC 2R AC
8) 7C17, FLT CONT ELEC 2R DC
(c)
P414, Main Power Distribution Panel
1) 414A5, LE FLAP ELEC DRIVE 1
2) 414F18, AUX HYD PUMP CONT 4
3) 414D08, CAPTAINS PWR SEAT
(d)
P415, Main Power Distribution Panel
1) 415A22, TE FLAP ELEC INBD
2) 415B32, LE FLAP ELEC DR 3
3) 415H32, F/O PWR SEAT
4) 415M38, TE FLAP ELEC OTBD
5) 415M35, LE FLAP ELEC DR 2
S 864-033
(2)
Make sure the control lever for the landing gear is in the DN position.
(3)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
(4)
Remove hydraulic power if it is not necessary (AMM 29-11-00/201).
S 864-034
S 864-035
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32-31-01
ALL ú ú 04 Page 414 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
LANDING GEAR SELECTOR VALVES - REMOVAL/INSTALLATION
___________________________________________________
1. General_______
A. This procedure contains four tasks:
(1)
The removal of the selector valve for the wing landing gear
(2)
The removal of the selector valve for the nose landing gear and the body landing gear
(3)
The installation of the selector valve for the wing landing gear
(4)
The installation of the selector valve for the nose landing gear and the body landing gear.
B.
The removal procedures are almost the same for the wing landing gear or the nose landing gear and the body landing gear.
C.
To remove the selector valve these operations are necessary:
(1)
Disconnect the selector valve crank.
(2)
Disconnect the hydraulic hoses.
(3)
Remove the selector valve.
(4)
Remove the hydraulic fittings from the valve.
D.
The installation procedures are almost the same for the wing landing gear or the nose landing gear and the body landing gear.
E.
To install the selector valve these operations are necessary:
(1)
Install the fittings in the selector valve.
(2)
Fill the valve with fluid.
(3)
Install the bolts that attach the valve.
(4)
Connect the selector valve crank.
(5)
Connect the hydraulic hoses to the valve.
(6)
Bleed the air from the selector valve.
(7)
Make sure there are no leaks in the hydraulic connections.
F.
The selector valve for the wing landing gear is in the position that follows:
(1)
The outboard side of the wheel well of the right body landing gear.
G.
The selector valve for the nose landing gear and the body landing gear is in the position that follows:
(1)
The outboard side of the wheel well of the left body landing gear.
TASK 32-31-03-004-001
2. Wing Landing Gear Selector Valve Removal________________________________________
A. Special Tools and Equipment
(1) G12001 Kit (Rigging Pins) ~................................................................ | Rigging Pin No. | Length (inch) | Diameter (inch)| .................................................................. | LG-1 | 4.0 | 0.309 to 0.311| .................................................................. | LG-2 | 4.0 | 0.309 to 0.311| 2.....................…......................…...................1
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