A. If oil manifold was removed from oil pump, install oil manifold on oil pump with nut and new packing.
B. Install new packings, lightly lubricated with petrolatum (VV-P-246, AMM 20-30-21/201) on oil pump housing.
C. Position oil pump assembly on accessory drive gearbox, aligning oil pump inlet line with fitting on oil pump inlet port (Fig. 401).
D. Attach oil pump assembly to accessory drive gearbox with bolts and washers. Tighten bolts to a torque value of 50-70 pound-inches.
E. Connect compressor inlet line to fitting on oil pump.
F. Connect gearbox inlet line to oil manifold fitting.
G. Connect scavenge pump inlet line to oil pump.
H. Connect electrical plug to oil temperature switch.
I. Connect tester line to receptacle on oil pump.
J. Connect oil pump inlet line to fitting on oil pump.
K. Connect oil cooler inlet line to fitting on oil pump.
L. Connect electrical plug to low oil pressure switch.
M. Connect electrical plug to sequencing oil pressure switch.
N. Install starter motor (AMM 49-41-11/401).
O. Fill oil tank (AMM 49-91-31/301).
P. Close the circuit breaker on M280 module-APU control unit on E3-3 electronic shelf.
Q. Position BATTERY switch to ON and remove placards.
R. APUs WITH ALLIEDSIGNAL SB GTCP85-49-7096; examine the oil pump for leakage:
(1)
Start and operate the APU (AMM 49-11-0/201).
(2)
During the APU operation, examine the oil pump for leakage.
(3)
Do the APU normal shutdown (AMM 49-11-0/201).
(4)
Attach a DO-NOT-OPERATE tag to the APU master switch on the P5 forward overhead panel.
(5)
If you found leakage, repair the cause of it.
S. APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096; examine the oil pump for leakage:
(1)
Start and operate the APU (AMM 49-11-0/201).
(2)
Do the APU normal shutdown (AMM 49-11-0/201).
(3)
Attach a DO-NOT-OPERATE tag to the APU master switch on the P5 forward overhead panel.
(4)
Visually examine the oil pump for any signs of leakage:
(a) If you found signs of leakage, repair the cause of it.
NOTE: If oil pump was replaced due to internal failure, check oil filter element (AMM 49-91-11/601).
T. Check oil pump pressure (AMM 49-91-11/501).
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G03148
514 Oil Pump Installation
Feb 20/86 Figure 401 (Sheet 1) 49-91-11
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Oil Pump Installation 501
49-91-11 Figure 401 (Sheet 2) Feb 20/86
Page 404
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Restore Airplane to Normal Configuration
A. Position lower shroud against upper shroud and close shroud latches.
CAUTION: MAINTAIN A MINIMUM CLEARANCE OF 0.18 INCH BETWEEN ENGINE PLUMBING, FIRE DETECTOR, CLAMPS AND INSIDE SURFACE OF LOWER SHROUD.
EXERCISE EXTREME CARE NOT TO DAMAGE SHROUD DRAIN LINES WHEN HANDLING SHROUD.
B. Disengage APU compartment access door support rods and stow rods. Close and latch access door.
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Aug 01/95 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 49-91-11 Page 405
OIL PUMP - ADJUSTMENT/TEST
1. General
A. An operational check of the oil pump should be made if any one of the following occurs: (1) the oil pump was disassembled; (2) the oil pump was removed and replaced; (3) the oil pressure switch was removed and replaced.
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