TM 5-4320-300-14Table 4-2. Organizational Maintenance Troubleshooting - ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONa. Remove radiator cap and cylinder block drain plug, and loosen oil cooler housing and radiatordraincocks. Drain coolant into a large metal container.b. Install cylinder block drain plug and tighten radiator and oil cooler housing draincocks.CAUTIONIf the engine is hot, fill SLOWLY to prevent rapidcooling and distortion of engine castings.c. Refill cooling system with clean, soft water. Start engine and operate it for 15 minutes tothoroughly circulate the water. Drain solution completely.d. Refill with descaling solution and perform the descaling procedure.e. Reverse-flush the cooling system as follows:(1) Remove water pump as described in paragraph 4-37.4-67
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