S 414-010
 CAUTION: KEEP A MINIMUM CLEARANCE OF 0.18 INCHES (5 MM) BETWEEN THE
_______ ENGINE, THE FIRE DETECTOR, THE CLAMPS, AND THE LOWER SHROUD.
 BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. SHROUD DRAIN LINES CAN OCCUR. DAMAGE TO THE
 (5)  Install the lower shroud: (a) Hold the lower shroud against the upper shroud. (b) Close the shroud latches.
 (6)  S 414-011Close the APU cowl door: (a) Disconnect the door support rods. (b) Put the door support rods in the clips on the APU cowl door.

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(c)  
Close the APU cowl door.

 (d)  
Close the latches for the APU cowl door.

 S 864-012
 (7)  Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.
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LOW OIL PRESSURE SWITCH - REMOVAL/INSTALLATION
______________________________________________
 1.  General
_______
 A.  This procedure contains the removal and the installation tasks for the low oil pressure switch. During this procedure, the low oil pressure switch is referred to as the oil pressure switch.
 B.  The oil pressure switch is on the forward bottom end of the APU and below the starter motor. You can get access to the switch through the APU cowl door.
 TASK 49-61-51-004-001
 2.  Low Oil Pressure Switch Removal (Fig. 401)
_______________________________
 A.  References
 (1)  IPC 49-70-01 Fig. 1
 B.  Access
 (1)  
Location Zones
 101 Flight Compartment, LH
 205 Electronic Compartment
 703 APU Compartment

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

 C.  Procedure
 S 864-002
 (1)  Set the switch and the circuit breaker:
 (a)  
Set the APU master switch, on the P5 forward overhead panel, to the OFF position and attach a DO-NOT-OPERATE tag.

 (b)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag: 1) E3-3 Electrical Shelf, APU Control Unit

 S 014-005
 (2)  Open the APU cowl door:
 (a)  Open the latches for the APU cowl door.
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
FWD
MANIFOLD FITTING
PACKING
LOW OIL PRESSURE SWITCH
ELECTRICAL CONNECTOR
Low Oil Pressure Switch Installation Figure 401
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(b)  
Open the APU cowl door.

 (c)  
Connect the door support rods.

 S 014-003
 CAUTION:_______BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. DAMAGE TO THE SHROUD DRAIN LINES CAN OCCUR.
 (3)  Remove the lower shroud:
 (a)  
Hold the lower shroud and open the shroud latches.
　
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