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 TM 9-2815-220-24
GENERATOR ABNORMAL OPERATION (300 AMPERE)
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:
Not charging (indicator reads in "yellow" same as battery reading with engine stopped and
master switch "ON").
PROBABLE CAUSE
CORRECTIVE ACTION
a. Battery cables or terminals loose, corroded,
(1) Check battery condition.
broken or disconnected (connector nuts not
(2) Inspect and repair cables and terminals
tightened).
(refer to pertinent vehicle technical manual).
b. Defective electrical circuits or voltage
(1) Check circuits and voltage regulator (refer
regulator.
to pertinent vehicle technical manual).
(2) Repair and replace as necessary (refer to
pertinent vehicle or generator technical
manual).
c. Generator failed.
(1) Check circuits and generator (refer to
pertinent vehicle or generator technical
manual).
(2) Repair and replace as necessary (refer to
pertinent vehicle technical manual).
(3) Perform Generator Electrical Failure Test as
follows:
PROCEDURE
OBSERVATION
ANALYSIS
Remove generator from
engine.
Damaged winding burned
Inspect generator
Debris and odor indicates
insulation debris, and odor
windings and insulation
generator burned out. Rotational
also observe for debris in
(accessible through drive
bind indicates failure.
drain tubes and freeness of
end plate), and check for
If above not evidenced, generator
rotation, of generator shaft.
free rotation of drive shaft
may have electrical failure or
turning shaft by hand.
drive gear assembly failure.
PROBABLE CAUSE
CORRECTIVE ACTION
c. (Continued) Generator failed.
(4) Replace generator (WP 0052, Generator
Replacement 300 Ampere).
WP 0022 00-1
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