(b)
Open the APU cowl door.
(c)
Connect the door support rods.
S 017-015
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.
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
APU COWL DOOR
DRAIN SEAL PLATES
SEE A
SEE B
SEE C
TO DRAIN MAST
DRAIN LINE LOWER SHROUD A DRAIN HOLES FOR THE ACCESS DOOR (NOT SHOWN)
DRAIN FITTING
B
DRAIN LINES
LOWER SHROUD STAND PIPE
SHROUD DRAIN RESERVOIR DRAIN DRAIN CUP DRAIN LINE
SEE D DRAIN CUP
C Figure 701 APU Drains Cleaning D
A09671
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S 167-004
(4) Blow the air through the drain tube of the exhaust duct, the aft
drain cup and the forward drain cup.
NOTE:____ You must remove the cover for the forward drain cup to
clean the cup.
(a) Make sure the air flows through the aft drain fitting on the
lower shroud.
S 217-005
(5) Make sure the internal area of the drain cups has no deterioration
because of corrosion or because of erosion (AMM 49-16-11/601).
S 167-006
(6) Blow the air through the shroud drain.
(a) Make sure the air flows through the forward drain fitting on
the lower shroud.
S 117-017
WARNING: 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.
(7) If some oil is on the lower shroud, clean the lower shroud:
(a)
Clean the lower shroud with the solvent.
(b)
Dry the surface of the lower shroud with the air.
S 167-007
(8) Blow the air through the seal plate fittings.
(a) Make sure the air flows through the APU drain mast.
S 167-008
(9) Blow the air through the two drain holes in the forward end of the APU cowl door.
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S 117-019
WARNING: 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.
(10) Clean the drain mast and the APU cowl door:
(a)
Clean the drain mast and the APU cowl door with the solvent.
(b)
Dry the drain mast and the APU cowl door with the air.
S 417-010
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