| Engine Model: John Deere PowerTech 4045TF120 |
| Engine Type: 4-stroke in-line 4-cylinder turbocharged liquid-cooled diesel |
| Total Displacement: 275 cu.in (4.5 L) |
| Rated Engine Power: 73-94 Hp (54.5-70 kW) at 1500-1800 rpm |
| Fuel System Type: Direct injection |
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| Engine starts up hard or will not start |
Fuel filter element clogging - Change filter element.
Air trapped in fuel system - Bleed air.
Clogged injection nozzle - Change fuel injection nozzles.
Fuel injection pump is broken - Repair or replace injection pump.
Improper valve timing - Correct or change timing gear.
Fuel pipes are clogged - Clean or change fuel pipes.
Injection timing is out of adjustment - Adjust as recommended.
Worn cylinder or piston rings - Change faulty parts.
| Engine starts but stalls suddenly |
Fuel filter element clogging - Change filter element.
Defective fuel injection pump - Repair or install new pump.
Air filter plugged - Air filter maintenance required.
Nozzle opening pressure is incorrect - Set it correctly.
| Engine shuts off while running |
Fuel injection timing is not adjusted - Adjust fuel injection pump as required.
Fuel filter element clogging - Replace filter element.
Engine is not preheated - Normalize the temperature by warming up the engine.
Stuck or burnt injection nozzle - Change or repair injection nozzles.
| Engine shuts off while idling |
Incorrect low idle speed adjustment - Adjust low idle speed.
Valve clearance is not correct - Check and adjust.
Fuel injection pump is broken - Repair or replace injection pump.
Clogged or defective injection nozzles - Inspect nozzles and replace if necessary.
Dirt in the fuel lines or hoses - Fuel lines and hoses need to be cleaned.
Clogged air filter element - Carry out maintenance on air filter.
Cylinder head gasket is worn - Change cylinder head gasket.
Injection timing is wrong - Adjust injection timing as required.
Fuel injection pump is defective - Replacement or repair required.
One of moving engine components is worn - Change or repair damaged parts.
Dirty radiator core or defective radiator cap - Clean radiator or change cap.
Insufficient coolant - The cooling system needs to be refilled and checked for faults.
Damaged or worn fan belt - If necessary, replace the belt.
Lack of engine oil - Check and refill engine oil.
Damaged cylinder-head gasket - Cylinder-head gasket replacement required.
Injection timing is incorrect - Adjust as recommended.
Low crankcase oil level - Add oil as required.
Oil pump failure - Check and replace if necessary.
Plugged engine oil filter - Clean or change engine oil filter.
Stuck or defective relief valve - Change or service relief valve.
Excessive crankshaft bearing clearance - Check and replace or repair defective parts.
Excessive crankpin bearing clearance - Inspect and change or repair worn components.
Oil leakage: Gaskets or seals may be damaged - Change to repair leaks.
Oil viscosity is wrong - Use proper viscosity oil.
Stuck or worn piston rings - Install new piston rings.
Damaged valve guides or valve stems - Valves need to be changed.
Damaged cylinder liners or pistons - Inspect liners and pistons, replace as necessary.
Low coolant temperature - Normalize the temperature by warming up the engine.
Insufficient engine oil - Check and refill engine oil.
Wrong setting of fuel injection pump timing - Adjust fuel injection pump as required.
Pistons are worn or scored - Install new pistons.
Misaligned or defective connecting rod - Align or change connecting rod.
Low battery capacity - Battery is drained, charge it.
Battery drains quickly - Battery needs service or replacement.
Faulty battery terminals or disconnected cables - Connect wires properly or change terminals.
Battery is drained or worn - Recharge or replace battery.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery output - Battery is drained, recharge it.
Starter motor is faulty - Repair or install a new starter.
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