(b)
Close the shroud latches.
S 416-032
(15) Close the APU cowl door:
(a)
Disconnect the door support rods.
(b)
Put the door support rods in the clips on the APU cowl door.
(c)
Close the APU cowl door.
(d)
Close the latches for the APU cowl door.
S 866-033
(16) Set the circuit breaker and the switch:
(a)
Remove the DO-NOT-CLOSE tag and close this circuit breaker: 1) E3-3 Electrical Shelf, APU Control Unit
(b)
Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.
TASK 49-31-71-206-034
3. Fuel Drain Inspection (APUs without the Fuel Drain Housing) (Fig. 601)
_____________________
A. Standard Tools and Equipment
(1)
Air Source - Compressed Dry
(2)
Vacuum Cleaner - to clean
B. Consumable Materials
(1) B00722 Solvent - P-D-680
C. References
(1) AMM 49-31-42/401, Combustor Unit
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
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49-31-71
ALL ú ú 01 Page 608 ú Nov 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E. Procedure
S 866-036
(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 016-037
(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 016-038
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 036-039
(4) Remove the drain line:
(a)
Disconnect the drain line from the drain tee.
(b)
Disconnect the drain line from the drain union on the combustion chamber cap.
(c)
Remove the drain line from the APU.
S 036-040
(5)
Remove the drain tee from the plenum union on the turbine plenum.
S 216-041
(6)
Do an inspection on the drain line:
(a)
Make sure the drain line has no carbon material or blockage.
(b)
Make sure the drain tee has no carbon material or blockage.
(c)
Make sure the drain union on the combustion chamber cap has no carbon material or blockage.
(d)
Make sure the plenum union on the turbine plenum has no carbon material or blockage.
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49-31-71
ALL ú ú 01 Page 609 ú Nov 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
S 106-042
CAUTION: DO NOT GET THE SOLVENT IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR
_______ SKIN. DO NOT BREATHE THE FUMES FROM THE SOLVENT. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVE WHEN YOU USE THE SOLVENT. KEEP THE SOLVENT AWAY FROM SPARKS, FLAME, AND HEAT. THE SOLVENT IS A POISONOUS AND FLAMMABLE MATERIAL WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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