CAUTION: DO NOT CONNECT THE ELECTRICAL CONNECTOR D95007A (P7A)
_______ TO CONNECTOR J7. THIS CAN CAUSE AN INCORRECT FAILURE AND A POSSIBLE AUTOMATIC SHUTDOWN.
1) Connect the electrical connector D95007A (P7A) (1) to the low oil pressure switch (2).
2) Tighten the coupling ring on the electrical connector D95007A (P7A) (1) until the electrical connector is at the bottom of the receptacle and the connection is tight.
3) Make sure the electrical connection is not loose when you move the APU harness. 4) Connect the electrical connector D95007 (P7) to connector J7.
5) Tighten the coupling ring on the electrical connector D95007 (P7) until the electrical connector is at the bottom of the receptacle and the connection is tight.
6) Make sure the electrical connection is not loose when you move the APU harness.
E. Put the Airplane Back to Its Usual Condition
S 864-016
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6-2 Main Power Distribution Panel
1) 6K18, APU ALTN CONT
(b)
P83 Aft APU Equipment Control and Circuit Breaker Panel 1) APU PRIME CONT
S 864-017
(2)
Remove the DO-NOT-OPERATE tag from the APU control switch on the P5 overhead panel.
S 414-024
(3)
Close the left APU access door, 317AL, and right APU access door, 318AR:
(a)
Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the right access door.
(b)
Install the two quick-release pins in the two brackets on the right APU compartment bulkhead.
(c)
Lift the right access door until you can install the lanyard on the pin at the aft APU compartment bulkhead.
NOTE: The lanyard will hold the right access door on the APU
____
compartment bulkhead.
(d)
Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the left access door.
(e)
Install the two quick-release pins in the two brackets on the left APU compartment bulkhead.
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747-400
MAINTENANCE MANUAL
(f)
Make sure the insulation covers are correctly attach to the APU compartment firewall.
(g)
Lift the left access door until the two APU access doors are approximately aligned.
(h)
Close the two APU access doors.
(i)
Close the six latches on the right access door.
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747-400 MAINTENANCE MANUAL
OIL LEVEL SENSOR - REMOVAL/INSTALLATION
_______________________________________
1. General_______
A. This procedure has these tasks:
(1)
A removal of the oil level sensor
(2)
An installation of the oil level sensor.
B.
The liquid level sensor is referred to as the oil level sensor.
C.
The oil level sensor is on the bottom right side of the load gearbox and adjacent to the starter motor.
TASK 49-94-03-004-001
2. Oil Level Sensor Removal (Fig. 401)________________________
A. References
(1)
AMM 12-22-02/301, Auxiliary Power Unit
B.
Equipment
(1)
Container - Oil Resistant, 5 U.S. Gallons (18.9 Liters)
C.
Access
(1)
Location Zones 310 Fuselage - Station 2360 to Station 2792
(2)
Access Panels
317AL APU Access Door - Left
318AR APU Access Door - Right
D.
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