Quantcast INTAKE MANIFOLD HEATER ABNORMAL OPERATION

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TM 9-2815-220-24
INTAKE MANIFOLD HEATER ABNORMAL OPERATION
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:
Manifold heater inoperative.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Electrical or fuel system malfunction.
(1) Check manifold heater operation. Repair or
replace defective parts as indicated by the
following tests.
PROCEDURE
OBSERVATION
ANALYSIS
Manifold heater Operational Check
Hold fuel shut-off (engine
"STOP") switch and crank
engine.
While cranking engine,
engage manifold heater
switch and hand operate
purge pump.
Note housing temperature (warm
Place hand on intake
Evidence of heat indicates
or hot to touch).
manifold heater housing.
manifold heater operation
Check both sides of engine.
is normal.
No heat indicates
manifold heater is
inoperative. Replace
manifold heater
(WP 0088, Manifold
Heater Assembly and
Related Parts
Replacement).
WP 0023 00-1

 


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