S 434-011
(3)
Install the screws (2) and washers (1) to attach the actuator (4) to the valve mounting bolts.
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747-400 MAINTENANCE MANUAL
S 424-027
(4) Tighten the cap screws to a torque of 20 - 25 pound-inches
(2.3 - 2.8 newton-meters).
S 434-021
(5) Install lockwire on the screws.
S 434-012
(6) Connect the bonding jumper (5) to the actuator (4).
S 764-028
(7) Measure the resistance between the actuator and the spar web
(SWPM 20-20-00).
NOTE:____ The resistance must not be more than 0.008 ohms.
S 434-013
(8)
Connect the electrical connector DV119 (3) to the actuator (4).
S 864-015
(9)
Supply electrical power, if it is not already done (AMM 24-22-00/201).
S 864-016
(10)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a)
P6 Main Power Distribution Panel 1) 6G5, FUEL SHUTOFF VALVE APU
S 754-022
(11)
Put the APU control switch to the ON position.
S 754-023
(12)
Make sure the manual override lever on the actuator moves to the OPEN position.
S 714-018
(13)
Put the APU control switch to the STOP position.
S 754-024
(14)
Make sure the lever goes to the CLOSED position.
S 094-019
WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(15) Remove the wing and body gear door locks (AMM 32-00-30/201).
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747-400 MAINTENANCE MANUAL
S 864-020
(16) Remove electrical power, if it is not necessary (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
APU FUEL SUPPLY LINE SHROUD - MAINTENANCE PRACTICES
___________________________________________________
1. General_______
A. This procedure has a task to do a check of the APU fuel supply line shroud and APU shroud drain line.
B. In this procedure, the APU fuel supply line shroud will be referred to as the shroud.
TASK 28-25-04-702-001
2. APU Fuel Supply Line Shroud Check (Fig. 201)_________________________________
A. Equipment
(1)
TE65B98608 - Plug, Auxiliary Power Unit Drain Test
(2)
Air pressure source with pressure relief - 40 psi maximum
B.
References
(1)
AMM 32-00-30/201, Landing Gear Door Locks
(2)
AIPC 28-25-04, Fig. 1
(3)
AIPC 28-25-04, Fig. 5
(4)
AIPC 28-25-04, Fig. 10
C.
Access
(1)
Location Zones 136 Wing Landing Gear Well, Right 316 Area Aft of Stabilizer Box Compartment, Right
(2)
Access Panels
315A APU Battery Access Door
D.
Prepare for the Check
(1)
Make sure the ground lockpins for the landing gear are installed.
S 862-026
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