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COOLANT HEATER MALFUNCTIONSContinued - TM-9-2350-277-20-1_418
COOLANT HEATER MALFUNCTIONSContinued - TM-9-2350-277-20-1_420
TM-9-2350-277-20-1 Hull Powerpack Drive Controls Tracks Suspension and Associated Components Carrier Ammunition Tracked Manual
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TM 9-2350-277-20-1
COOLANT HEATER MALFUNCTIONS—Continued
0089 00
10Y
1. Replace heater (WP 0728 00).
2. Verify no faults found.
AY
1. Remove heater indicator cover lens (1) and bulb (2).
2. Measure
resistance
between bulb center contact and base.
3. Does
multimeter
read less than 100 ohms?
YES
NO
AYN
1. Replace heater bulb (WP 0702 00).
2. Verify no faults found.
A2Y
1. Remove harness 12268797 circuit 400 plug (1) from control box
jack (2).
2. Measure voltage between harness 12268797 circuit 400 plug (1)
pin and ground.
3. Does
multimeter
read 17 volts or more?
YES
NO
A2YN
1. Repair harness 12268797 circuit 400
between MASTER SWITCH and
heater control box (WP 0382 00).
2. Verify no faults found.
0089 00-3
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