D.  
Procedure

 S 044-020-N00
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
EEC ALTERNATOR SEE A  A  SEE  B 
A 
A MAIN GEARBOX (REAR VIEW)  L-A0530 NOTE:____  QEC EQUIPMENT NOT SHOWN FOR CLARITY. 
SEAL 
EEC ALTERNATOR HOUSING 

L-A2720 A-A
EEC Alternator Drive Oil Seal Installation Figure 401 (Sheet 1)
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(2)  S 014-021-N00Open the fan cowl panels (AMM 71-11-04/201).
 (3)  S 014-022-N00Open the core cowl panels (AMM 71-11-06/201).
 S 014-023-N00

 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU OPEN THE THRUST
_______ REVERSER. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (4) Open the thrust reversers (AMM 78-31-00/201).
PACKING GROOVE 
GEARSHAFT 
RETAINING  SEAL  PACKING 
RING  PACKING  PULLER 
GROOVE 
B 
B  SEAL  MAIN GEARBOX 

SEAT
SLEEVE GEARSHAFT
SPACER

CARBONFWD
C
SEAL  DETAIL
B
L-A0270
B-B
C
PWA 85723 PULLER
PULLER JAWS
L-A4295
C-C
PULLER RING
EEC Alternator Drive Oil Seal Installation
Figure 401 (Sheet 2)

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 014-002-N00
 (5)  
Remove the EEC alternator stator and rotor (AMM 73-21-05/401).

 S 034-003-N00

 (6)  
Remove the retaining ring that attaches the alternator oil seal to the space in the EEC alternator drive pad.

 S 494-004-N00

 (7)  
Install the PWA 85723 puller to the seal housing.

 (a)  
Engage the puller jaws in the groove of the seal housing.

 (b)  
Move the puller ring down until the jaws are engaged in the groove.

 S 024-005-N00
 (8)  Remove the alternator oil seal with a slide hammer action of the puller.
 NOTE: This slide hammer action will cause a force that is larger
____
 than the preformed packing.

 S 094-006-N00
 (9)  
Disengage the puller from the alternator oil seal.

 (a)  
Discard the packing.

 S 034-007-N00
 (10)
 If it is necessary, remove seal seat as follows:

 (a)  
Remove the sleeve spacer and the gearshaft packing. 1) Discard the packing.

 (b)  
Remove the seal seat.

 (c)  
Replace the seal seat if you find damage on it.

 S 034-008-N00
 (11) Install a cover on the gearshaft housing of the EEC alternator.
 TASK 72-61-05-404-009-N00
 3. Install Electronic Engine Control (EEC) Alternator Drive Oil Seal (Fig. 401)
_________________________________________________________________
 A. Consumable Materials
 (1)  
　
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