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TM-9-2815-202-34 Technical Manual for 8V71T Engines for M109 Howitzer Download

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TM 9-2815-202-34 2-5. MALFUNCTION, TEST OR INSPECTION, AND CORRECTIVE ACTION PROCEDURES (Cont) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 8. BLUE EXHAUST SMOKE ● ● Step 1. Check blower oil seals for leaks. a. Remove air inlet housing. WARNING When Inspecting a blower on a engine with engine running, keep fingers, equipment and clothing away from moving parts of blower. engine at low speeds only. Run 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 21-11). b. Operate engine, fluctuating between 650-1200 RPM and inspect blower end plates for evidence of oil leakage past seals. c. If leakage is detected, replace blower (Refer to Para 4-18). Step 2. Check turbocharger for defective oil seals. a. Remove air intake hose and tube and exhaust pipe. b. Check for evidence of oil on compressor or turbine. c. If oil is present, replace turbocharger assembly. d. Install air intake hose and tube and exhaust pipe. Step 3. Perform oil analysis for coolant in engine oil. (Refer to DA PAM 738-750) END OF TEST 2-12