H. APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096;
Examine the oil level switch 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 level switch for any signs of leakage:
(a) If you found signs of leakage, repair the cause of it.
Aug 01/95 49-94-11 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
G21236
Oil Level Switch Installation 575
49-94-11 Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 15/78
4. 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.
526
Nov 15/70 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 49-94-11 Page 403
OIL TEMPERATURE SWITCH - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Compound - Crisco, Procter and Gamble Co., Cincinnati, Ohio, or equivalent
B. Thread Compound - Liqui-Moly, Lockrey Co., Lubricants Division, Southampton, New York, or equivalent
2. Prepare for Removal
A. Position BATTERY SWITCH and APU START SWITCH to OFF and placard to show that APU maintenance is in progress.
B. Open circuit breaker on M280 module -APU accessory unit on E3-3 electrical shelf.
C. Open APU compartment access door latches and open door. Install door support rods.
D. Support lower shroud, open shroud latches, and remove shroud.
CAUTION: EXERCISE EXTREME CARE NOT TO DAMAGE SHROUD DRAIN LINES WHEN HANDLING SHROUD.
3. Remove Oil Temperature Switch (Fig. 401)
A. Disconnect electrical connector.
B. Remove oil temperature switch and packing.
4. Install Oil Temperature Switch (Fig. 401)
A. Spread thin film of compound over a new packing.
Aug 15/72 49-94-21 Page 401
Oil Temperature Switch Installation 500
49-94-21 Figure 401 (Sheet 1) Aug 15/72
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Oil Temperature Switch Installation
Aug 15/72 Figure 401 (Sheet 2) 49-94-21
Page 403
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
B. Apply thread compound to threads of switch.
C. Install switch and new packing and lockwire.
D. Connect electrical connector.
5. Restore Airplane to Normal
A. Close circuit breaker on M280 module-APU control unit on E3-3 electrical shelf.
B. Position BATTERY switch to ON and remove placard.
C. APUs WITH ALLIEDSIGNAL SB GTCP85-49-7096;
Examine the oil temperature switch for leakage:
(1)
Start and operate the APU (AMM 49-11-0/201).
(2)
During the APU operation, examine the oil temperature switch 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.
D. APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096;
Examine the oil temperature switch 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 temperature switch for any signs of leakage:
(a) If you found signs of leakage, repair the cause of it.
E. 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.
F. Disengage APU compartment access door support rods and stow rods. Close and latch access door.
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