TM-9-2350-238-20-1
HULL AND RELATED COMPONENTS RECOVERY VEHICLE, FULL TRACKED: LIGHT, ARMORED, M578
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL
MAY 1994
TM-9-2350-238-20-1 - Page 355 of 1364
TM 9-2350-238-20-1
BF. COOLANT HEATER CIRCUIT.
Step 1.
Disconnect wiring harness from coolant heater control box. Place red probe
on pin D (lead 411). Ground black probe. Set START-OFF-RUN switch to
START. If multimeter indicates about 24 volts, go to step 2. If multimeter
indicates no voltage, replace coolant heater control box. Refer to page
2-1056. Set START-OFF-RUN switch OFF. Connect wiring harness.
2-329
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