S 014-003-N00

 (3)  
Open the fan cowl panels (AMM 71-11-04/201).

 S 014-004-N00

 (4)  
Open the core cowl panels (AMM 71-11-06/201).

 S 014-005-N00
 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00 WHEN YOU OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
 (5)  
Open the thrust reversers (AMM 78-31-00/201).

 S 014-006-N00

 (6)
Remove the EEC alternator stator and rotor (AMM 73-21-05/401).

 S 014-007-N00

 (7)  
Remove the EEC alternator drive oil seal (AMM 72-61-05/401).

 E.
Procedure

 S 024-008-N00
 (1)  
Do the steps that follow to remove the EEC Alternator Drive Gearshaft and Bearings Assembly (Fig. 401).

 (a)  
Remove the three bolts and washers that attach the EEC alternator drive gearshaft and bearings assembly to the EEC alternator drive pad.

 (b)  
Remove the assembly from the gearbox.

 (c)  
Discard the packing.

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 72-61-14
 ALL  ú ú N01 Page 402 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SEE A
FWD
EEC ALTERNATOR DRIVE GEARSHAFT AND
PACKING BEARINGS ASSEMBLY
SEE B
MAIN 
GEARBOX 
WASHER 
(3 LOCATIONS)  EEC ALTERNATOR 
BOLT  DRIVE PAD 
(3 LOCATIONS) 

A
L-A7930 (000)
EEC Alternator Drive Gearshaft and Bearings Assembly
Figure 401 (Sheet 1)

 A40138
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 ALL  ú ú N01 Page 403 ú Jun 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
BEARING INNER
RACE AND ROLLERS BEARING SEAL SEAT
INSERT
BEARING
OUTER RACE BOLT (2 LOCATIONS)
1 GENERATOR (EEC ALTERNATOR HOUSING)
BEARING SPACER
PACKING
PACKING
PLUG BEARING INNER RACE AND ROLLERS SPUR GEARSHAFT
BOLTBEARING (2 LOCATIONS)
OUTER RACE PACKING
EEC ALTERNATOR ROTOR SLEEVE SPACER
B
ENGINES WITH PW SB 72-206
HAVE ONLY ONE BOLT L-A7933 (000) 1
EEC Alternator Drive Gearshaft and Bearings Assembly
Figure 401 (Sheet 2)

 A40137
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 034-009-N00
 (2)  
Do the steps that follow to disassemble the EEC alternator drive gearshaft and bearings assembly (Fig. 401).

 (a)  
Remove the sleeve spacer for the EEC alternator rotor.

 (b)  
Discard the packing from the spur gearshaft.

 (c)  
With the PWA 86086 Puller, remove the bearing seal seat.

 (d)  
ENGINES PRE-PW-SB 72-206; Remove the two bolts that attach the bearing outer race to the generator housing.

 (e)  
ENGINES POST-PW-SB 72-206 AND PRE-PW-SB 72-375; Remove the bolt that attaches the bearing outer race to the generator housing.

 (f)  
ENGINES POST-PW-SB 72-375; Remove the two bolts that attach the bearing outer race to the generator housing.

 CAUTION: MAKE SURE YOU KEEP THE DETAILS OF THE BEARINGS ASSEMBLY
_______ TOGETHER. IT IS NOT EASY TO ASSEMBLE THE DETAILS OF THE BEARINGS ASSEMBLY.
 (g)  
Put the halves of the PWA 85274 Plate under the mounting flange of the generator housing.

 (h)  
Put the EEC alternator drive gearshaft and bearings assembly, with the gear end down, into the PWA 12126 Base.
　
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