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 LUBRICATING SYSTEM 6. EXCESSIVE ENGINE OIL CONSUMPTION Step 1. Check oil lines and connections for leaks. Step 2. Clean and inspect crankcase breathers (Refer to Paragraphs 4-11, 4-15, 6-16, or 7-14 for appropriate engine model). Step 3. Check blower oil seals for leaks. a. Remove air inlet housing. When Inspecting a fingers, equipment Run engine at iow WARNING biower on a engine with the engine running, keep and ciothing away from moving parts of the biower. speeds oniy. 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 4. Check for blue smoke. Inspect exhaust manifolds and stacks for wetness or oil discharge. NOTE If wetness or oil discharge is present in exhaust manifolds, it is usually an indication of worn valve guides. Low compression readings will indicate worn out cylinders. Step 5. Check vehicle for leaks in air cleaner system which would allow contaminated air to enter engine. Perform cylinder compression test (Refer to Para 8-14). Step 6. Check turbocharger oil drain and supply lines for leakage. END OF TEST 2-10