B.
References

 (1)  
AMM 71-00-00/501, Power Plant

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 72-61-05
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2)  
AMM 71-11-04/201, Fan Cowl Panels

 (3)  
AMM 71-11-06/201, Core Cowl Panels

 (4)  
AMM 73-21-05/401, EEC Alternator

 (5)  
AMM 78-31-00/201, Thrust Reverser System

 (6)  
IPC 72-61-05 Fig. 1

 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.
Prepare for the Installation

 S 224-010-N00
 (1)  
Do a check of the clearance between the face of the alternator oil seal and the EEC alternator housing.

 (a)  
Make sure that the clearance is in the limits that are shown in the table that follows.

 ~............................................................. | | | NEW PART REFERENCE | CLEARANCE | | | | DIMENSIONS | LIMITS | | PART | | INCHES | INCHES | | NAME | DIA | (MM) | (MM) | | | ............................................... | | | MIN | MAX | MIN | MAX | ............................................................... | SEAL | OD | 3.111 | 3.116 | | | | | | (79.020) | (79.146) | 0.002 | 0.012 | ......................................... (0.050) | (0.300) | | HOUSING | ID | 3.118 | 3.123 | | | | | | (79.198) | (79.324) | | | 2.........….....…...........…...........…..........…..........1
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
E. Install the EEC Alternator Drive Oil Seal
 S 434-011-N00
 (1)
Remove the cover from gearshaft housing of the EEC alternator.

 S 434-012-N00

 (2)
If the seal seat was removed or replaced, install it as follows:

 (a)  
Install the seal seat, with the smaller outer diameter side pointed inward, over the stud (threaded) end of the EEC alternator gearshaft.

 (b)  
Lubricate the packing with engine oil.

 (c)  
Install the packing in the groove on the EEC alternator gearshaft.

 (d)  
Install the sleeve spacer on the gearshaft packing, which is on the gearshaft.

 S 434-013-N00
 (3)  
Lubricate a new preformed packing with engine oil.

 (a)  
Put this packing in the groove of the alternator oil seal.

 S 644-014-N00
 (4)  
Lubricate the mating (carbon) surface of the face of the alternator oil seal with engine oil.

 S 424-015-N00

 (5)  
Push the alternator oil seal on the stud (threaded) end of the gearshaft until it is against the seal seat.

 S 434-016-N00

 (6)  
Install the retaining ring in the groove in the gearbox housing to hold the alternator oil seal.

 S 414-017-N00

 (7)
Install the EEC alternator rotor and stator (AMM 73-21-05/401).

 S 414-024-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU CLOSE THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (8)  Close the thrust reversers (AMM 78-31-00/201).
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