Quantcast CLEAN AIR SYSTEM TROUBLESHOOTING

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TM 9-2815-220-24
CLEAN AIR SYSTEM TROUBLESHOOTING
THIS WORK PACKAGE COVERS:
Troubleshooting Table and Diagnostic Tests
INITIAL SETUP:
Tools:
Personnel Required:
General mechanic's tool kit (item 121, WP 0176)
Track Vehicle Repairer (2) 63H10
Equipment Conditions:
Engine installed in vehicle or ground hop.
MALFUNCTION 1:
Abnormal operation of dust detector system (power pack warning lamp and dust detector
warning lamps ON, with pressure switch plunger(s) visible).
PROBABLE CAUSE
CORRECTIVE ACTION
a. Restricted filter strip.
(1) Service dust detector filter strip, refer to
pertinent vehicle technical manual.
b. Loose or defective hose clamps on
(1) Repair or replace as necessary.
turbosupercharger air inlet hose.
(1) Repair or replace as necessary.
c. Defective or missing seals at
turbosupercharger air inlet elbow or air
cleaner air outlet elbow.
d. Restricted orifices in turbosupercharger
(1) Remove dust detector filter strip cover.
compressor housing and cover.
Clean all orifices and cavities. Service
filter strip.
e. Defective pressure switch.
(1) Remove pressure switch (WP 0082,
Turbosupercharger Dust Detector System
Replacement). Perform pressure switch
operational check.
PROCEDURE
OBSERVATION
ANALYSIS
Install an adapter in the
bottom (low pressure)
opening in pressure switch.
Suck on connector with the
Pressure switch plunger pops up.
Switch is operational.
mouth.
Pressure switch plunger does not
Switch needs to be
pop up.
replaced. Remove
adapter and replace
switch.
Using a voltmeter, check
No continuity.
Switch defective.
for continuity across the
Replace pressure switch.
two pressure switch
There is continuity.
Switch is operational.
connector pins.
WP 0026 00-1

 


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