TM-9-2815-220-24
AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TM-9-2815-220-24 - Page 161 of 1563
TM 9-2815-220-24
GENERATOR ABNORMAL OPERATION (300 AMPERE)
0022 00
THIS WORK PACKAGE COVERS:
Troubleshooting Table and Diagnostic Tests
INITIAL SETUP:
Tools:
General mechanic’s tool kit (item 121, WP 0176)
Personnel Required
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
(1) Check battery condition.
a. Battery cables or terminals loose, corroded,
broken or disconnected (connector nuts not
tightened).
(2) Inspect and repair cables and terminals
(refer to pertinent vehicle technical manual).
(1) Check circuits and voltage regulator (refer
to pertinent vehicle technical manual).
b. Defective electrical circuits or voltage
regulator.
(2) Repair and replace as necessary (refer to
pertinent vehicle or generator technical
manual).
(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).
c. Generator failed.
(3) Perform Generator Electrical Failure Test as
follows:
PROCEDURE
OBSERVATION
ANALYSIS
Remove generator from
engine.
Debris and odor indicates
generator burned out.
Rotational
bind indicates failure.
Inspect generator
windings and insulation
(accessible through drive
end plate), and check for
free rotation of drive shaft
turning shaft by hand.
Damaged winding – burned
insulation debris, and odor –
also observe for debris in
drain tubes and freeness of
rotation, of generator shaft.
If above not evidenced, generator
may have electrical failure or
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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