EEC ALTERNATOR DRIVE SHAFT
3. EEC ALTERNATOR HANDLE
ROTOR
SEE B
A1
THREADED SHAFT
1. NUT (LUG END)
ECC ALTERNATOR GEARSHAFT
HANDLE
3. EEC ALTERNATOR ROTOR
1 ENGINES PRE-PW-SB 72-375
A2
2 ENGINES POST-PW-SB 72-375
L-A8249 (0000)
EEC Alternator (N2 Transducer) Rotor Installation
Figure 403 (Sheet 1)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
PULLER JAW
PWA 86551 PULLER
EEC Alternator (N2 Transducer) Rotor Installation
Figure 403 (Sheet 2)
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C80805
(3)
WDM 73-21-15, 73-21-25, 73-21-35, 73-21-45, 77-12-21, 77-12-22, 77-12-23, 77-12-24
(4)
SSM 73-21-01, 77-12-02
C.
Access
(1)
Location Zone
412 Engine 1 - Main Gearbox Aft Face 6 o'clock
422 Engine 2 - Main Gearbox Aft Face 6 o'clock
432 Engine 3 - Main Gearbox Aft Face 6 o'clock
442 Engine 4 - Main Gearbox Aft Face 6 o'clock
(2)
Access Panel
415 and 416 Thrust Reverser Halves - Engine 1
425 and 426 Thrust Reverser Halves - Engine 2
435 and 436 Thrust Reverser Halves - Engine 3
445 and 446 Thrust Reverser Halves - Engine 4
D.
Procedure
S 014-016-N00
(1)
Remove the EEC alternator stator, if it is not removed (Ref the above task).
S 494-017-N00
(2)
Install the PWA 85238 wrench holder or PWA 86603 wrench adapter with the steps that follow:
NOTE: The following steps refer to the PWA 85238 wrench holder or
____ the PWA 86603 wrench adapter. The wrench holder is for engines PRE-PW-SB 72-375 and the wrench adapter is for engines POST-PW-SB 72-375. "PWA wrench" is used to describe both types in this procedure.
(a)
Loosen the jamnuts on the shaft with the threads.
(b)
Retract the shaft from the body of the PWA wrench.
(c)
Install the handle on the lug end of the shaft.
1) Make sure the lug end of the handle points the same direction as the lugs on the shaft.
(d)
Put the PWA wrench on the EEC alternator drive pad with the bolt holes aligned.
(e)
Engage the lugs of shaft with the mating slots in the drive shaft for the EEC alternator. 1) Attach the body to the drive pad with the bolts which are
included with the PWA wrench.
(f)
Install the shaft tightly against the drive shaft. 1) Tighten the jamnuts to attach the shaft.
S 094-032-N00
(3) Engage the lugs of the handle for the wrench with the mating lugs on the nut (1).
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S 034-018-N00
(4) Turn the handle to loosen the nut (1).
NOTE: You must do this in many steps because the handle movement
____ has a limit. You must disengage and engage the handle with the nut for each handle movement.
S 094-019-N00
(5)
Remove the bolts which attach the PWA wrench to the drive pad.
S 094-033-N00
(6)
Remove the PWA wrench.
S 034-020-N00
(7)
Remove the nut (1) which attaches the rotor (3) to the drive shaft.
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