B. 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

 C. Procedure
 S 424-007
 (1)  Install the oil cooler:
 (a)  If the elapsed time indicator was removed, install the new elapsed time indicator (AMM 49-72-11/401).
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
(b) (c)  Put the oil cooler assembly on the crossover duct for the cooling air.Align the inlet and the outlet line fittings for the oil cooler with the inlet and the outlet lines.
 (d) (e)  Install the packing on the oil cooler.Install the clamp that attaches the oil cooler to the crossover duct for the cooling air.
 NOTE:____ The clamp nut points in the 3 o'clock position when it is seen from the rear of the APU. The clamp must not point down.
 (f) (g) (h)  1) Tighten the clamp.Install the clamp that attaches the oil cooler to the bracket on the side of the accessory drive gearbox. 1) Tighten the clamp.Connect the outlet line to the fitting on the oil cooler.Connect the inlet line to the fitting on the oil cooler.
 S 864-008
 (2)  Set the circuit breakers 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 864-009
 (3)  Wet motor the APU (AMM 49-11-00/201).
 S 614-010
 (4)  Add the oil to the oil tank (AMM 12-13-31/301).
 S 794-011
 (5)  APUs WITH ALLIEDSIGNAL SB GTCP85-49-7096; Examine the oil cooler for leakage: (a) Start and operate the APU (AMM 49-11-00/201).

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(b)  
During the APU operation, examine the oil cooler 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 794-013
 (6)  APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096; Examine the oil cooler 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 cooler for any signs of leakage: 1) If you found signs of leakage, repair the cause of it.

 S 414-015
 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
 (7)  Install the lower shroud: (a) Hold the lower shroud against the upper shroud. (b) Close the shroud latches.
 (8)  S 414-013Close the APU cowl door: (a) Disconnect the door support rods. (b) Put the door support rods in the clips on the APU cowl door. (c) Close the APU cowl door. (d) Close the latches for the APU cowl door.
 (9)  S 864-012Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.

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