Table 2-3. Troubleshooting (Cont)

TM 5-6115-584-34 NAVFAC Table 2-3. Troubleshooting (Cont) MALFUNCTION TESTORINSPECTION CORRECTIVE ACTION . — 8 . Check for worn oil pump (paragraph 7-11). Replace pump. Check (paragraph 7-17). Replace worn bearings. 9. HIGH OIL PRESSURE Step 1. Check to see if oil by-pass is stuck closed (paragraph 7-13). Clean or replace oil by-pass valve and spring. Step 2. Check for clogged passages. Clean all oil lines and passages. 10. EXCESSIVE OIL CONSUMPTION. Step 1. Check for worn valve guides (paragraph 7-9). Replace guides, valves, and seals. Step 2. Check for worn or sticking piston rings (paragraph 7-10). Replace rings if necessary. Step 3. Check for air leaks to crankcase. Replace gaskets and seals as necessary. BLACK EXHAUST EXCESSIVE FUEL CONSUMPTION Step 1. Check for incorrect timing 7- 18). Adjust injection timing if necessary. Step 2. Check for faulty injection pump or nozzles (paragraphs 7-18 and 7-20). Repair, overhaul, rebuild, or repiace pump and nozzles as necessary. 3. Check valve condition (paragraph Replace worn valves. 12. TAPPING OR C LICKING SOUND FROM CYLINDER HEAD. Step 1. Check for too great a valve clearance (paragraph 7-9). Adjust clearance. Step 2. Check for broken valve spring (paragraph 7-9). Replace broken springs. 2-8