S 614-024
(4)
Do this task: Fill the APU Oil Tank (AMM 12-22-02/301).
F.
Main Driveshaft Oil Seal Installation Test
S 794-038
(1)
Do the installation test for the main driveshaft oil seal:
(a)
Do this task: APU Starting and Operation (AMM 49-11-00/201).
(b)
Operate the APU for a minimum of five minutes.
(c)
During the APU operation, examine the oil seal and starter motor drivepad for signs of oil leakage.
NOTE: An oil leakage rate of 50 drops for each hour (1.0 cc
____ for each hour) is permitted during an APU operation from the starter motor drivepad.
(d) If you find more than the oil leakage rate, then do these steps to repair the leakage: 1) Do this task: APU Usual Shutdown (AMM 49-11-00/201).
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2) Attach a DO-NOT-OPERATE tag to the APU control switch on
the P5 overhead panel. 3) Repair the cause of the oil leakage. 4) Remove the DO-NOT-OPERATE tag from the APU control switch
on the P5 overhead panel. 5) Do this task: APU Starting and Operation (AMM 49-11-00/201). 6) During the APU operation, examine the oil seal and starter motor drivepad for signs of oil leakage. 7) If you find more than the oil leakage rate, do the leakage repair again.
(e) If it is not necessary to do other tasks, do this task: APU Usual Shutdown (AMM 49-11-00/201).
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OIL FILTER ELEMENT - REMOVAL/INSTALLATION
_________________________________________
1. General_______
A. This procedure has these tasks:
(1)
A removal of the oil filter element
(2)
An installation of the oil filter element.
B.
The oil filter element is in the oil filter cover. The oil filter cover is at the bottom right side of the accessory gearbox.
C.
You can get access to the oil filter element through the two APU access doors.
TASK 49-27-03-004-001
2. Oil Filter Element Removal (Fig. 401)__________________________
A. Equipment
(1)
Container - Oil Resistant, 5 U.S. Gallons (18.9 Liters)
B.
Access
(1)
Location Zones
221 Control Cabin - Left
222 Control Cabin - Right
310 Fuselage - Station 2360 to Station 2792
(2)
Access Panels
317AL APU Access Door - Left
318AR APU Access Door - Right
C.
Prepare for the Removal
S 864-002
(1)
Make sure the APU control switch on the P5 overhead panel is OFF and attach a DO-NOT-OPERATE tag.
S 864-003
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(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
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S 014-031
(3)
Open the left APU access door, 317AL, and right APU access door, 318AR:
(a) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 机载辅助动力 2(13)
