(b)
Fuel bypass port
(c)
Fuel drain fitting
(d)
Oil drain fitting
(e)
Gearcase pressure gage connection
(f)
Fuel and oil pressure gage connections
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
49-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
S 622-135
(8) Make sure the APU has protection from water and unwanted materials:
(a)
Install plugs, caps and covers on all ports and openings for the APU.
(b)
Install a cover for the exhaust duct muffler.
(c)
Make sure the air inlet door is fully closed.
S 212-234
(9)
Make sure the APU inlet door is closed.
S 862-235
(10)
Set the BAT switch to the OFF position.
S 932-236
(11)
Attach a preservation tag, that has the date of preservation on it, to the APU master switch.
TASK 49-11-00-602-224
14. APU Depreservation (Fig. 208)
__________________
A. General
(1) This procedure gives the steps to depreserve a new APU engine that is installed on the airplane.
B. Consumable Materials
(1)
D00068 Oil - Aircraft Turbine Engine, MIL-PRF-23699 Type II or
(2)
D00071 Oil - Aircraft Turbine Engine, MIL-PRF-7808 Type I
(3)
B00025 Solvent - P-D-680
C. References
(1)
AMM 12-13-31/301, APU Oil Tank
(2)
AMM 49-31-00/201, APU Fuel System
(3)
AMM 49-31-22/401, Low Pressure Fuel Filter Element
(4)
AMM 49-31-81/301, High Pressure Fuel Filter
(5)
AMM 49-91-12/401, Oil Filter Element
D. 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
E. Procedure
S 862-127
(1) Examine the switch and the circuit breaker:
(a) Make sure the APU master switch on the P5 forward overhead panel is in the OFF position. 1) Remove the preservation tag from the APU master switch.
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2) Attach a DO-NOT-OPERATE tag.
(b) Make sure this circuit breaker is open with a DO-NOT-CLOSE tag on it: 1) E3-3 Electrical Shelf
a) APU CONTROL UNIT
S 012-128
(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.
S 012-129
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.
(b)
Remove the lower shroud.
S 092-239
(4) APUs PRESERVED FOR MORE THAN 180 DAYS; Remove the plugs or the caps from these ports or fittings:
(a)
Fuel inlet port
(b)
Fuel bypass port
(c)
Fuel drain fitting
(d)
Oil drain fitting
(e)
Gearcase pressure gage connection
(f)
Fuel and oil pressure gage connections.
S 922-137
(5)
Remove the plugs, caps and covers from all ports and openings for the APU.
(6)
Remove the cover for the exhaust duct muffler.
S 922-138
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