Quantcast ENGINE FAILS TO CRANK

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TM 9-2815-220-24
ENGINE FAILS TO CRANK
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:
Engine will not crank (no response when starter switch is pressed).
PROBABLE CAUSE
CORRECTIVE ACTION
a. Master switch "OFF".
(1) Turn switch "ON."
b. Transmission shift selector not in
(1) Place shift selector in "neutral/park"
"neutral/park" position.
position.
c. Transmission shift linkage and
(1) Adjust transmission shift linkage. Refer to
"neutral/park" position out of adjustment.
pertinent vehicle technical manual.
(2) Adjust "neutral/park" switch for full travel.
Refer to pertinent vehicle technical manual.
d. Low voltage protection module operating
(1) Verify all panel lights are "ON", at normal
and/or batteries discharged (below 12 volts).
brightness.
(2) Check battery indicator as follows:
PROCEDURE
OBSERVATION
ANALYSIS
Master switch "OFF".
Indicator needle at extreme left (no
Indicator satisfactory.
voltage indicated).
Indicator needle at any position other than  Indicator defective.
extreme left.
Indicator satisfactory.
Master switch "ON".
Indicator needle moves into "yellow" area
(indicating battery voltage) with panel
lights on.
Indicator needle does not move from
Indicator defective.
extreme left position with panel lights on.
PROBABLE CAUSE
CORRECTIVE ACTION
d. (Continued) Low voltage protection module  (3) Check battery condition as follows:
operating and/or batteries discharged (below
12 volts).
PROCEDURE
OBSERVATION
ANALYSIS
Master switch "ON".
Indicator needle in "yellow" area.
Battery charged.
Indicator needle in left "red" area.
Batteries discharged.
Indicator needle in "green" area.
Batteries overcharged.
WP 0006 00-1

 


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