(2)
D00504 Petrolatum - PMC 9609
C. References
(1) AMM 49-11-00/201, APU Power Plant
D. Access
(1)
Location Zones
101 Control Cabin (Left)
205 Electronic Compartment
703 APU Compartment
(2)
Access Panels
1201 Electronic Equipment Access Door
3804 APU Cowl Door
E. Procedure
S 863-001
(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 013-002
(2) Open the APU cowl door:
(a) Open the latches for the APU cowl door.
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49-31-81
ALL ú ú 01 Page 301 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
SEE A
FWD
A
FUEL CONTROL UNIT
LOW PRESSURE FUEL FILTER FILTER GUIDE
(REF) PACKING
FWD FILTER ELEMENT
PACKING FUEL
CONTROL
CAP FOR THE UNIT
HIGH PRESSURE
FUEL FILTER
B 1
FUEL FILTER LOW PRESSURE (REF) FILTER PACKING GUIDE
FUEL FILTER HIGH PRESSURE CAP FOR THE PACKING FILTER ELEMENT
FWD
2 1 AIRPLANES WITH THE TAFCU AIRPLANES WITHOUT THE TAFCU B 2
High Pressure Fuel Filter Servicing Figure 301
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(b)
Open the APU cowl door.
(c)
Connect the door support rods.
S 013-003
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 023-004
CAUTION: MAKE SURE THAT NO DIRT GOES INTO THE FUEL CONTROL UNIT WHEN YOU
_______ REMOVE THE FILTER ELEMENT. UNWANTED DIRT CAN CAUSE A BAD EFFECT ON THE OPERATION OF THE FUEL CONTROL UNIT.
(4) Remove the filter element for the high pressure fuel filter:
(a)
Remove the lockwire from the filter cap and the fuel control unit.
(b)
Remove the filter cap for the high pressure fuel filter from the fuel control unit.
(c)
Remove the filter element and the packings.
(d)
Discard the filter element and the packings.
S 113-013
(5) Clean the filter cap for the high pressure fuel filter:
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.
(a)
Clean the filter cap with the solvent.
(b)
Dry the filter cap with the air.
S 423-006
(6) Install the filter element for the high pressure filter element:
(a)
Apply a thin layer of lubricant on the new packing for the filter element.
(b)
Install the new packing on the new filter element.
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