(b)  
Remove the lower shroud.

 S 024-005
 (4)  Remove the oil temperature switch:
 (a)  
Disconnect the electrical connector.

 (b)  
Remove the temperature switch and the packing. 1) Discard the packing.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
FWD
OIL COOLER INLET LINE OF THE  DRIVE GEARBOX ACCESSORY 
SEE  A
ELECTRICAL 
CABLE OF 
THE OIL 
TEMPERATURE 
SWITCH 
INLET LINE 
OF THE 
FWD OIL PUMP 
OIL 
STARTER  TEMPERATURE 
MOTOR  OIL FILTER  SWITCH 
Oil Temperature Switch Installation 
Figure 401 (Sheet 1) 

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 ALL  ú ú 01 Page 402 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
OIL PUMP
ASSEMBLY

ELECTRICAL CONNECTOR
OIL
PACKING TEMPERATURE SWITCH
FWD
A
Oil Temperature Switch Installation
Figure 401 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
TASK 49-94-21-404-006
 3. Oil Temperature Switch Installation (Fig. 401)
___________________________________
 A. Consumable Materials
 (1)  
D00000 Compound - Crisco, Procter and Gamble Co, Cincinatti, Ohio

 (2)  
D00000 Compound - Thread, Liquid-Moly, Lockery Co., Lubricants Division, Southampton, New York

 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 424-007
 (1)  Install the oil temperature switch:
 (a)  
Apply a thin layer of compound on a new packing.

 (b)  
Apply the thread compound to the threads of the switch.

 (c)  
Install the switch and the new packing. 1) Install a lockwire to the switch.

 (d)  
Connect the electrical connector.

 S 864-011
 (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.

 S 794-008
 (3)  APUs WITH ALLIEDSIGNAL SB GTCP85-49-7096;
 Examine the oil temperature switch for leakage:

 (a)  
Start and operate the APU (AMM 49-11-00/201).

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

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

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 49-94-21
　
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