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New Holland TG255 Troubleshooting

New Holland TG255 Engine Troubleshooting

Engine starts hard or will not start: Clogged fuel filter. Clean the filter element. Air in fuel tank. Bleed fuel tank. Faulty fuel injection nozzles. Inspect nozzles and replace if necessary. Fuel injection pump is not operating properly. Install a new pump or rebuild.

Engine stops running suddenly: Fuel injection pump timing is wrong. Use the correct fuel injection pump timing adjustment. Fuel filter element clogging. Replace the filter element. Engine is not warmed up to the required temperature. Warm up the engine.

Diesel starts but stalls suddenly: Fuel filter element is dirty. Install new filter element. Fuel injection pump malfunctioning. Replace injection pump or repair it. Clogged air filter element. Clean or replace element.

Engine is overheated: Radiator core is clogged or radiator cap is leaking. Replace cap or clean radiator. Insufficient coolant fluid. Add coolant fluid to cooling system and also check it for leaks. Fan belt is broken or worn. If necessary, replace the belt. Low engine oil level. Add oil to the engine crankcase.

Low engine power: Clogged or burnt injection nozzle. Change fuel injection nozzles. Dirty fuel lines or hoses. Service fuel lines and hoses. Intake air restriction. Clean air cleaner element. Worn cylinder head gasket. Change cylinder head gasket.

Engine knocks or noises: Low coolant temperature. Engine is not warmed up to the required temperature. Engine oil insufficient. Fill up the oil to required level. Wrong setting of fuel injection pump timing. Adjust the pump as required. Broken or worn pistons. Replace the pistons. Connecting rod is worn or not aligned. Need to replace or align the connecting rod.

Engine stops at idle: Low idle speed setting is incorrect. Adjust low idling as recommended. Valve clearance is out of adjustment. Adjust valve clearance. Fuel injection pump is faulty. Replace or repair injection pump.

Oil pressure is low: Oil level is low. Fill the crankcase with oil. Oil pump malfunction. Install a new pump. Dirty oil filter. Change or clean engine oil filter element.

New Holland TG255 Transmission Troubleshooting

Transmission noises: Backlash is incorrect or gears are damaged. Replace defective gears or set backlash properly. Worn or bent shift forks. Replace the shift forks. Shaft splines are worn or damaged. Shaft need to be changed. Transmission fluid level is low. Check and refill the transmission fluid. Bearings are cracked or worn. Bearings replacement required. Transmission fluid is contaminated. Transmission fluid change required.

Difficulty shifting gears: Gear shift linkage is worn or rusty. Lubricate or replace the shift linkage. Clutch is out of adjustment or defective. Adjust clutch or change if necessary. Worn or bent shift forks. Replace defective shift forks. Worn parts of the gear shifting mechanism. Change worn parts.

Insufficient transmission fluid pressure: Transmission oil level is low. Check transmission oil level and add oil as required. Dirty transmission oil filter element (if equipped). Service or replace the transmission oil filter. Relief valve is damaged. Install a new relief valve.

External fluid leaks: Worn seals or gaskets. Seals and gaskets replacement required. High transmission oil level. Correct the oil level.

New Holland TG255 Hydraulic System Troubleshooting

Hydraulics overheating: Hydraulic oil type is improper. Fill up with the proper type of oil. Hydraulic fluid is contaminated. Fill up with new hydraulic fluid. Air in the hydraulic system. Air bleeding. Defective main relief valve. Relief valve need to be replaced.

Low hydraulic system pressure: Low hydraulic oil level. Check and refill the hydraulic oil. Clogged hydraulic oil filter. Replace filter element or clean if required. Leaking hydraulic pipes. Find leaks in the system and fix it. Hydraulic spool valve is out of adjustment. Spool valve adjustment required. Faulty hydraulic pump. Install a new hydraulic oil pump. Broken hydraulic cylinder. Install a new hydraulic cylinder or repair it.

Hitch does not raise or raises very slowly: Hydraulic pump not working. Install a new hydraulic fluid pump. Main relief valve failure. Relief valve must be changed. Hydraulic spool valve is faulty. Replace or repair the valve. Hydraulic cylinder is faulty. Repair or install a new hydraulic cylinder. Hydraulic fluid is insufficient. Fill up the hydraulic fluid. Hydraulic oil filter element is clogged. Change hydraulic filter element or clean if necessary. Heavy load on the hitch. Load needs to be reduced.

3-point hitch won't lower or lowers slowly: Hydraulic cylinder malfunction. Install a new hydraulic cylinder or repair it. Not adjusted hydraulic control valve. Need to adjust. Hitch cross shaft is damaged. Install a new shaft. The 3-point hitch is not adjusted. Need to make adjustments.

Jerky lowering or lifting of the hitch: Dirty hydraulic oil. The oil must be changed. Hydraulic pump failure. Replace or repair hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic spool valve is defective. Repair or change the valve. Faulty hydraulic cylinder. Repair or replace hydraulic cylinder.

New Holland TG255 Steering System Troubleshooting

Steering wheel free play is excessive: Steering column coupling or shaft has maximum wear. Replace defective part. Steering pump failure. Install a new steering pump. Steering linkage assembly is worn or loose. Inspect and replace as required. Faulty or worn steering control unit. Repair or replace the steering control unit.

Hard Steering: Air in steering system. Bleed air. Clogged steering filter element. Install new steering filter element. Steering fluid insufficient. Check and refill steering fluid. Steering control unit is defective or worn. Inspect and change as required. Steering pump failure. Steering pump needs to be repaired or replaced. Pump flow control valve is damaged or stuck. Change or flush control valve. Improperly mounted or worn steering column. Mount the steering column as required or change it. Tyre pressure is uneven. Adjust the tyre pressure. Improper toe-in. Check toe-in and correct. Steering cylinder is leaking. Damaged cylinder seals or worn piston rod.

Front wheels wander to right or left: Steering control unit has malfunction or wear. Inspect and change as required. Steering cylinder is worn. Repair or replace hydraulic steering cylinder. Incorrect toe-in. Check toe-in and correct. Steering linkage components are loose or worn. Inspect and replace as required. Improperly adjusted or defective front wheel bearings. Adjust correctly or install new bearings. Tire pressure uneven. Inflate the tires correctly.

New Holland TG255 Electrical System Troubleshooting

Battery is not charging: Corroded or loose electrical wire connections. Service or tighten connections. Faulty battery terminal clamps. Terminal clamps should be changed. Battery dead cell. Change the battery. Defective or loose belt. Adjust belt tension or change the belt.

Starter turning slow: Battery capacity is low. Battery is drained, charge it. Battery is draining quickly. Service or replace the battery. Disconnected battery cables or bad terminals. Check wiring and clean or replace terminals.

Starter motor won't turn: Battery is low or faulty. Charge or change the battery. Battery cables are disconnected or incorrectly connected. Check cables and connect as needed. Low battery power. Battery needs to be recharged. Starter motor is faulty. Repair or replace starter.