TROUBLESHOOTING
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 19 shown below for diagnosis of the engine. If the problem cannot be remedied, consult our company's business office or service plant.
TABLE 19. ENGINE TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | |
|
|
| |
| No fuel? | Replenish fuel. | |
|
|
| |
| Air in the fuel system? | Bleed system. | |
|
|
| |
| Water in the fuel system? | Remove water from fuel tank. | |
|
|
| |
| Fuel pipe clogged? | Clean fuel pipe. | |
|
|
| |
| Fuel filter clogged? | Clean or change fuel filter. | |
|
|
| |
| Excessively high viscosity of |
| |
| fuel or engine oil at low | Use the specified fuel or engine oil. | |
| temperature? |
| |
| Fuel with low cetane number? | Use the specified fuel. | |
|
|
| |
| Fuel leak due to loose injection | Tighten nut. | |
| pipe retaining nut? | ||
|
| ||
Engine does not start. |
|
| |
Incorrect injection timing? | Adjust. | ||
|
|
| |
| Fuel cam shaft worn? | Replace. | |
|
|
| |
| Injection nozzle clogged? | Clean injection nozzle. | |
|
|
| |
| Injection pump malfunctioning? | Repair or replace. | |
|
|
| |
| Seizure of crankshaft, camshaft, | Repair or replace. | |
| piston, cylinder liner or bearing? | ||
|
| ||
|
|
| |
| Compression leak from | Replace head gasket, tighten cylinder head bolt, glow plug and | |
| cylinder? | nozzle holder. | |
|
|
| |
| Improper valve timing? | Correct or replace timing gear. | |
|
|
| |
| Piston ring and liner worn? | Replace. | |
|
|
| |
| Excessive valve clearance? | Adjust. | |
|
|
| |
Starter does not run. | Starter malfunctioning? | Repair or replace. | |
|
| ||
Wiring disconnected? | Connect wiring. | ||
| |||
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PAGE 46 — DCA25USIXF/DCA25USI2XF — OPERATION AND PARTS MANUAL — REV. #2 (07/26/11)
