MDR-9DYE — ENGINETROUBLESHOOTING
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take a remedial action following the diagnosis based on the Engine and Roller Troubleshooting (Tables 8 and 9) information shown below and on the proceeding page. If the problem cannot be remedied, please leave the unit just as it is and consult our company's business office or service plant.
TABLE 8. ENGINE TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | |
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| Speed control lever is in "STOP" position? | Set speed control lever to "START" position. | |
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| No fuel reaching injection pump? | Add fuel. Check entire fuel system. | |
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| Defective fuel pump? | Replace fuel pump. | |
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| Fuel filter clogged? | Replace fuel filter and clean tank. | |
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Engine will not start or start is | Faulty fuel supply line? | Replace or repair fuel line. | |
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delayed, although engine can be | Compression too low? | Check piston, cylinder and valves. Adjust or | |
turned over. | repair per engine repair manual. | ||
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| Fuel injector not working correctly? | Repair or replace injector in accordance with | |
| engine repair manual. | ||
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| Oil pressure too low? | Check engine oil pressure. | |
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| Low starting temperature limit exceeded? | Comply with cold starting instructions and | |
| proper oil viscosity. | ||
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| Check whether clear (not turbid) fuel emerges | |
| Fuel separates has inadequate resistance to | from the fuel line (detach from injection pump). | |
| If the fuel is turbid or separated, warm up the | ||
At low temperatures engine will | low temperatures? | ||
engine or drain the complete fuel supply | |||
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not start. |
| system. Refuel with winter grade diesel fuel. | |
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| Engine oil too thick? | Refill engine crankcase with correct type of oil | |
| for winter environment. | ||
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| Throttle lever in STOP position? | Reposition throttle lever to RUN position. | |
Engine fires but stops soon as |
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Fuel filter blocked? | Replace fuel filter. | ||
starter is switched off. | |||
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| Fuel supply blocked? | Check the entire fuel system. | |
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Engine stops by itself during | Fuel tank empty? | Add fuel. | |
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normal operation. | Fuel filter blocked? | Replace fuel filter. | |
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| Fuel tank empty? | Replace fuel filter. | |
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| Fuel filter clogged? | Replace fuel filter. | |
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Low engine power, output and | Fuel tank venting is inadequate? | Ensure that tank is adequately vented. | |
speed. |
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Speed control lever does not remain in | See engine manual for corrective action. | ||
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| selected position? |
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| Engine oil level too full? | Correct engine oil level. | |
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| Air filter blocked? | Clean or replace air filter. | |
Low engine power output and |
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Incorrect valve clearances? | Adjust valves per engine specification. | ||
low speed, black exhaust smoke. | |||
| Malfunction at injector? | See engine manual. | |
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