PRESSURE PUMP COOLING AIR INLET
OIL PUMP
VENT LINE
FOR THE
TURBINE
SCAVENGE BEARING
PUMP CAVITY
VENT LINE FOR
THE OIL TANK
LEGEND
OIL VENT
OIL RETURN
OIL TANK OIL PUMP SUCTION
SWITCH FOR OIL PUMP PRESSURE
THE LOW OIL QUANTITY SCAVENGE PUMP SUCTION
SCAVENGE PUMP PRESSURE
APU Lubrication System Flow Diagram
Figure 2
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
OIL PUMP - REMOVAL/INSTALLATION
_______________________________
1. General
_______
A. This procedure gives the tasks to remove and install the oil pump assembly. You must remove the starter motor before you remove the oil pump assembly. The oil pump is installed on the gearbox assembly.
TASK 49-91-11-004-001
2. Oil Pump Removal (Fig. 401)
___________________________
A. Standard Tools and Equipment
(1) Container - 5.0 U.S. Gallons (18.9 liters) Capacity
B. References
(1)
AMM 49-41-11/401, Starter Motor
(2)
AMM 49-91-11/601, Oil Pump
(3)
AMM 49-91-31/301, Oil Tank
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 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 014-003
(2) Open the APU cowl door:
(a)
Open the latches for the APU cowl door.
(b)
Open the APU cowl door.
(c)
Connect the door support rods.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
SEE B
SEE A
FWD
A
TACHOMETER
INLET LINE FOR
GENERATOR
ACCESSORY CONNECTOR THE OIL COOLER
OIL PUMP DRIVE SEE C ASSEMBLY GEARBOX WASHER (3 LOCATIONS)
CONNECTOR CABLE NUTFOR THE OIL (3 LOCATIONS)
TEMPERATURE
SWITCH
INLET LINE FORFWD THE OIL PUMP
STARTER
MOTOR
OIL FILTER
B
Oil Pump Installation Figure 401 (Sheet 1)
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49-91-11
ALL ú ú 01 Page 402 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
ACCESSORY
DRIVE
GEARBOX
PACKINGS
OIL PUMP
ASSEMBLY
INLET LINE FOR
THE SCAVENGE PUMP
GEARBOX OIL
INLET LINE FILTER
PACKING
NUT
LOW OIL PRESSURE SWITCH FOR THE OIL INLET LINE FOR THE COMPRESSOR
MANIFOLD
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