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TM 9-2815-220-24
ENGINE STALL TEST
THIS WORK PACKAGE COVERS:
Engine Stall Test
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
CAUTION
If a rough, noisy, or overheated engine is associated with the reported
low power, prior correction of these malfunctions often will eliminate
the poor performance, and, in addition, may prevent further damage
to the engine.
When low power or poor vehicle performance is reported, an engine
"stall" speed test will indicate whether the malfunction is engine or
vehicle related. See Work Package 0019 for engine low performance
troubleshooting procedures.
PRELIMINARY INVESTIGATION
PROBABLE CAUSE
CORRECTIVE ACTION
a. Engine rough operation.
(1) Refer to WP 0014 (Engine Rough
Operation).
b. Engine noisy.
(1) Refer to WP 0015 (Engine Noisy
Operation).
c. Engine overheating.
(1) Refer to WP 0017 (Cooling System
Deficiencies).
ENGINE STALL TEST
PROCEDURE
OBSERVATION
ANALYSIS
Start engine and warm to normal operating temperature (140 F).
Engine speed below 1800 rpm.
Engine and
With vehicle brakes
transmission
applied and
NOTE
partially warmed up.
transmission in "high
Use a calibrated tachometer for
range," depress
"Stall Test."
accelerator pedal fully
CAUTION
and operate engine for
Limit "Stall Test" to 30-second
20 seconds, release
intervals maximum and terminate
accelerator pedal and
immediately if transmission warning
allow engine to idle
light activates.
1 minute.
WP 0041 00-1

 


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