TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download
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TM 9-2815-202-34 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION COOLING SYSTEM 11. ENGINE COOLANT OPERATING TEMPERATURE ABOVE NORMAL Step 1. Step 2. Step 3. Step 4. Step 5. Check coolant level. Check operation of vehicle cooling system (Refer to appropriate vehicle type-20 maintenance manual). Check for collapsed, cracked, or disintegrated hoses. Check thermostats for operation. Remove thermostat and test (Refer to Para 4-8). Check for combustion gases in the cooling system. a. Remove radiator filler cap. WARNING Protective fan screens must be Installed prior to doing maintenance In the engine compartment when engine is running or when engine is in ground hop mode. Contact with rotating fan can cause injury (reference . - . — FM b. c. d. 21-11). Operate engine at idle. Check radiator for bubbles in coolant which indicates a damaged cylinder head. Install radiator cap. END OF TEST 2-15