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(4) Lubricate a new O-ring (90) for the IDG drive pad or O-ring (90) for the hydraulic pump drive pad or O-ring (90) for the fuel pump drive pad or O-ring (90) for the starter drive pad with engine oil (Material No. CP2442). Install the O-ring (90) in the outer groove of the magnetic seal housing assembly (120).
(5) Lubricate the carbon ring mating face and the gearshaft with engine oil (Material No. CP2442).
CAUTION : MAKE SURE THAT PARTICLES; EVEN OF EXTREMELY SMALL SIZE, ARE
_______ NOT LEFT BETWEEN THE POLISHED FACE OF THE MAGNETIC RING AND THE CARBON FACE OF THE ROTATING RING ASSEMBLY DURING INSTALLATION. OTHERWISE LEAK CAN OCCUR.
CAUTION : DO NOT HIT THE CARBON MATING FACE OR SLIDE IT ON THE
_______ MAGNETIC MATING RING WHEN YOU INSTALL THE CARBON RING ASSEMBLY.
(a) Very carefully, install the carbon ring assembly (80) against the polished face of the magnetic ring.
CAUTION : DO NOT HIT THE MAGNETIC SEAL HOUSING DURING THE
_______ INSTALLATION TO PREVENT DAMAGE TO THE MAGNETIC SEAL COMPONENTS.
1 Align the carbon ring assembly with the housing bore.
_
(b) Engage the magnetic seal assembly on the gearshaft until the O-ring (90) of the housing is fully against the AGB pad.
(6) Lubricate the threads of the 3 studs with graphite grease (Material No. CP2101).
(7) Install washers (100) and nuts (110) and continuously install the magnetic seal assembly until the housing flange is fully against the AGB pad.
(8) TORQUE the nuts (110) to between 55 and 60 lbf.in (0.62 and 0.67 m.daN).
(9) Depending on the drive pad on which you have replaced the magnetic seal assembly, install one of these units:
- IDG (Ref. TASK 24-21-51-400-040)
- hydraulic pump (Ref. TASK 29-11-51-400-041)
- fuel pump (Ref. TASK 73-11-10-400-003)
- Starter (Ref. TASK 80-11-10-400-002)
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E. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
Subtask 72-63-00-710-055
F. Do a leak check of the replacement seal (Ref. TASK 71-00-00-790-006). If there are leaks (Ref. TASK 71-00-00-790-002).
5. Close-up
________ Subtask 72-63-00-942-051
A. Remove the warning notice(s).
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Replacement of a Magnetic Seal (IDG and Starter Drive Pads).
1. Reason for the Job
__________________
To replace a leaky magnetic seal by another magnetic seal at:
- the Integrated Drive Generator (IDG) drive pad,
- the starter drive pad. 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM ENGINE 發動機 2(153)
