John Deere 6059T Troubleshooting
| Engine Model: John Deere 6059T |
| Engine Type: 4-stroke in-line 6-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 359 cu.in (5.9 L) |
| Rated Engine Power: 115-150 Hp (86-112 kW) at 2500 rpm |
| Fuel System Type: Direct Injection |
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| Engine starts up hard or doesn't start |
Fuel filter plugged - Clean or change the filter.
Air in fuel tank - Bleed fuel tank.
Clogged injection nozzle - Check injection nozzles and replace if required.
Faulty fuel injection pump - Rebuild or replace pump.
Valve timing is out of adjustment - Set the valve timing correctly.
Dirt in the fuel lines or hoses - Service or change fuel pipes.
Unadjusted injection timing - Adjust as recommended.
Cylinder or piston rings are worn - Change defective components.
| Diesel starts and then shuts off |
Dirty fuel filter - Change filter element.
Fuel injection pump is defective - Change pump or rebuild it.
Air filter is clogged - Clean or change the filter.
Unadjusted nozzle opening pressure - Adjust as required.
| Diesel shuts off while driving |
Incorrect adjustment of fuel injection pump timing - Adjust the pump as required.
Clogged fuel filter - Filter maintenance required.
Engine is not preheated - Warm up engine as required.
Injection nozzles sticking or clogged - Change or repair injection nozzles.
| Engine stops at low idle speed |
Improperly adjusted low idle speed - Correct low idle settings.
Valve clearance is not correct - Adjust valve clearance according to specifications.
Fuel injection pump is broken - Change or repair the pump.
Dirty or damaged injection nozzles - Service or change injection nozzles.
Restricted fuel hoses or lines - Service fuel hoses and lines.
Clogged air cleaner - Service or replace the air filter.
Defective cylinder head gasket - Gasket should be replaced.
Improper injection timing - Adjust as recommended.
Faulty fuel injection pump - Replace or rebuild injection pump.
One of moving engine parts is faulty - Repair or replace defective components.
Clogged radiator core or damaged radiator cap - Replace cap or clean radiator.
Insufficient coolant - Refill to the correct level and inspect system for leaks.
Broken or loose fan belt - Belt change is required.
Engine oil insufficient - Check oil level and add oil as required.
Cylinder head gasket defective - Install a new gasket.
Injection timing is improper - Adjust injection timing as required.
Engine oil insufficient - Add oil to the engine crankcase.
Oil pump is damaged - Install a new pump.
Engine oil filter is plugged - Change or service engine oil filter.
Stuck or worn relief valve - Replace or service relief valve.
Clearance of crankshaft bearing is excessive - Check and replace or repair defective parts.
Crankpin bearing clearance is excessive - Inspect and replace or repair faulty parts.
| High engine oil consumption |
Oil leakage: Defective seals or gaskets - To repair leaks, replace worn parts.
Incorrect oil viscosity - Fill up with the proper oil viscosity.
Stuck or defective piston rings - Install new piston rings.
Valve stems and guides are worn - Valves need to be changed.
Pistons or cylinder liners are scored - Inspect liners and pistons, change as necessary.
Engine is not warmed up to the required temperature - Warm up the engine.
Low engine oil level - Fill up the engine oil.
Wrong setting of fuel injection pump timing - Set up as recommended.
Pistons are broken or worn - Pistons replacement required.
Misaligned or faulty connecting rod - Alignment procedure or replacement is required.
Low battery output voltage - Battery is drained, charge it.
Battery does not hold charge - Service battery or replace it.
Disconnected wiring or bad battery terminals - Check wire connections and change or service terminals.
Battery is low or faulty - Charge or change the battery.
Battery cables are disconnected or improperly connected - Inspect cables and connect properly.
Battery voltage is low - Charge the battery.
Damaged starter motor - Repair or install a new starter.
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