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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE  B 
SEE  A 
FWD  A
WASHERS NUTS  GASKET SNAP RING SEAL PACKING  OIL PUMP  ACCESSORY GEARBOX DRIVE 
GENERATOR TACHOMETER 
FWD  MOTOR STARTER  GENERATOR TACHOMETER CONNECTOR ELECTRICAL Oil Pump Drive Shaft Seal Installation Figure 401 FOR THE B 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(d)  
Remove the snap ring from the oil pump.

 (e)  
Use the puller to remove the drive shaft seal and packing from the oil pump. 1) Discard the packing.

 TASK 49-91-51-404-013
 3.  Drive Shaft Seal Installation (Fig. 401)
_____________________________
 A.  Consumable Materials
 (1)  D00129 Petrolatum, AN-P-51
 B.  References
 (1)  AMM 49-11-00/201, APU Power Plant
 C.  Access
 (1)  
Location Zones
 101 Control Cabin, LH
 205 Electronic Compartment
 703 APU Compartment

 (2)  
Access Panels
 1201 Electronic Equipment Access Door
 3804 APU Cowl Door

 D.  Procedure
 S 424-001
 (1)  Install the drive shaft seal to the oil pump:
 (a)  
Apply a layer of petrolatum to the drive shaft seal and packing.

 (b)  
Install the packing on the oil pump.

 (c)  
Put the drive shaft seal in the oil pump.

 1)  Make sure the lip of the drive shaft seal points away from the APU.

 (d)  
Install the snap ring on the oil pump to hold the drive shaft seal in its position.

 (e)  
Install the gasket to the oil pump.

 (f)  
Install the tachometer generator to the oil pump with the nuts and washers.

 (g)  
Connect the electrical connector to the tachometer generator.

 S 864-017
 (2)  Set the circuit breaker and the switch:
 (a)  
Remove the DO-NOT-CLOSE tag and close this circuit breaker: 1) E3-3 Electrical Shelf, APU Control Unit

 (b)  
Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.

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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
S 794-030
 (3)  APUs WITH ALLIEDSIGNAL SB GTCP85-49-7096; Examine the oil pump for leakage:
 (a)  
Start and operate the APU (AMM 49-11-00/201).

 (b)  
During the APU operation, examine the oil pump for leakage.

 (c)  
Do the APU usual shutdown (AMM 49-11-00/201).

 (d)  
Attach a DO-NOT-OPERATE tag to the APU master switch on the P5 forward overhead panel.

 (e)  
If you found leakage, repair the cause of it.

 S 794-039
 (4)  APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096; Examine the oil pump for leakage:
 (a)  
Start and operate the APU (AMM 49-11-00/201).

 (b)  
Do the APU usual shutdown (AMM 49-11-00/201).

 (c)  
Attach a DO-NOT-OPERATE tag to the APU master switch on the P5 forward overhead panel.

 (d)  
Visually examine the oil pump for any signs of leakage: 1) If you found signs of leakage, repair the cause of it.

 S 414-028
 CAUTION: KEEP A MINIMUM CLEARANCE OF 0.18 INCHES (5 MM) BETWEEN THE
_______ ENGINE, FIRE DETECTOR, CLAMPS AND LOWER SHROUD.
 BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. SHROUD DRAIN LINES CAN OCCUR. DAMAGE TO THE
　
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