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New Holland TM125 Troubleshooting

New Holland TM125 Engine Troubleshooting

Engine starts up hard or doesn't start: Fuel filter plugged. Clean or replace the filter. Air in fuel system. Bleed fuel system. Damaged or dirty injection nozzles. Replace injection nozzles. Fuel injection pump malfunctioning. Repair or replace injection pump.

Engine shuts off while running: Improper fuel injection timing. Set it up as required. Fuel filter element is clogged. Filter maintenance required. Engine has not warmed up to the recommended temperature. Warm up to required temperature.

Engine stalls after starting: Clogged fuel filter. Change the filter element. Faulty fuel injection pump. Replace injection pump or repair it. Air filter is dirty. Clean or change.

Engine overheating: Clogged radiator core or damaged radiator cap. Install new cap or clean radiator. Insufficient coolant fluid. Add coolant fluid to cooling system and also check it for leaks. Broken or loose fan belt. Replace the fan belt. Engine oil level is insufficient. Fill the crankcase with engine oil.

Low engine power: Clogged injection nozzle. Inspect nozzles and replace if necessary. Restricted fuel lines or hoses. Service fuel hoses and lines. Restricted intake air. Change air filter element. Leaking cylinder head gasket. Change cylinder head gasket.

Engine noise or knocking: Engine is not warmed up to the required temperature. Engine is not warmed up to the required temperature. Low engine oil level. Check and refill engine oil. Timing of fuel injection pump is incorrect. Set it up as required. Pistons are worn or broken. Replace the pistons as required. Misaligned or faulty connecting rod. Connecting rod needs to be replaced or aligned.

Engine stalls at idle: Incorrectly set low idle speed. Correct the settings. Valve clearance is out of adjustment. Need to adjust valve clearance. Faulty fuel injection pump. Repair or change injection pump.

Insufficient oil pressure: Oil level is low. Fill up the engine oil. Oil pump is damaged. Inspect and change as required. Oil filter is clogged. Replace or service engine oil filter.

New Holland TM125 Transmission Troubleshooting

Transmission is excessively noisy: Worn gears or incorrect backlash. Replace gears or adjust backlash correctly. Worn or bent shift forks. Change the shift forks. Stuck or worn shaft splines. Shaft need to be changed. Transmission fluid insufficient. Need to add transmission fluid. Worn or damaged bearings. Replace faulty bearings. Transmission fluid contamination. Change the fluid.

Hard shifting: Gear shift linkage is worn or rusty. Lubricate or replace the shift linkage. Clutch is out of adjustment or defective. Clutch needs to be adjusted or changed. Worn or bent gear shift forks. Replace defective shift forks. Gearshift mechanism is damaged. Replace or repair the mechanism.

Insufficient transmission fluid pressure: Lack of transmission fluid. Fill the transmission housing to proper fluid level. Clogged transmission oil filter element (if fitted). Service or change transmission oil filter. Relief valve failure. Change the valve.

Transmission oil leakage: Broken seals or gaskets. Replace worn gaskets or seal. High transmission oil level. Correct the oil level.

New Holland TM125 Hydraulic System Troubleshooting

Hydraulics overheating: Incorrect hydraulic oil type. Use the correct type of hydraulic oil. Hydraulic oil contamination. Change the oil. Air in the hydraulic system. Air bleeding. Main relief valve is faulty. Replace relief valve.

Low hydraulic fluid pressure: Insufficient hydraulic fluid. Fill the system to proper hydraulic fluid level. Clogged hydraulic fluid filter. Clean or replace the hydraulic filter. Leaks in hydraulic pipes. Check the system and repair leaks. Hydraulic control valve is out of adjustment. Need to make adjustment. Hydraulic pump is defective. Replace or repair hydraulic oil pump. Damaged hydraulic cylinder. Change or repair hydraulic cylinder.

Hitch does not raise or raises very slowly: Hydraulic pump malfunction. Change or repair hydraulic oil pump. Main relief valve is damaged. Relief valve need to be replaced. Defective hydraulic control valve. Change or repair hydraulic valve. Defective hydraulic cylinder. Repair or change hydraulic cylinder. Insufficient hydraulic fluid. Fill the system to proper hydraulic fluid level. Clogged hydraulic oil filter. Service or replace the hydraulic filter. Hitch is under excessive load. Reduce hitch load.

3-point hitch cannot be lowered or lowering is too slowly: Broken hydraulic cylinder. Repair or install a new hydraulic cylinder. Hydraulic control valve is out of adjustment. Need to make adjustment. Damaged hitch rock shaft. Install a new shaft. Misadjusted hitch. The hitch must be adjusted.

Hitch jerks when drop or lift: Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Hydraulic pump is faulty. Change or repair hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic spool valve is faulty. Repair or replace hydraulic valve. Defective hydraulic cylinder. Change or repair hydraulic cylinder.

New Holland TM125 Steering System Troubleshooting

Excessive steering wheel free play: Worn steering column shaft or coupling. Change defective component. Steering pump is worn. Check the hydraulic steering pump and change if necessary. Loose or worn steering linkage components. Inspect and change as required. Worn or damaged steering control unit. Change or repair steering unit if required.

Steering wheel turns hard: Air in steering hydraulic system. Air-bleed steering system. Steering filter is dirty. Steering filter need to be replaced. Steering oil level is insufficient. Checking steering oil level and add it if necessary. Steering control unit is defective or worn. Change or repair steering unit if required. Worn steering pump. Steering pump needs to be replaced or repaired. Pump flow control valve is worn or stuck. Flush or change flow control valve. Improperly mounted or worn steering column. Mount the steering column as required or change it. Uneven tire pressure. Inflate the tires properly. Improper toe-in. Adjust toe-in wheels. Leaking steering cylinder. Change worn piston rod or damaged cylinder seals.

Tractor pulls to left or right: Steering control unit has wear or damage. Inspect and replace as required. Faulty steering cylinder. Replace or repair hydraulic steering cylinder. Not adjusted toe-in. Check and adjust toe-in. Steering linkage parts are loose or worn. Check and replace as required. Worn or incorrectly adjusted or worn front wheel bearings. Replace or adjust the bearings correctly. Front tyres are worn unevenly. Install new tyres.

New Holland TM125 Electrical Troubleshooting

Battery is not charging: Electrical cable connections are loose or corroded. Tighten or clean connections. Battery terminal clamps are defective. Terminal clamps should be changed. Faulty cell in battery. Install a new battery. Worn or loose belt. Adjust belt tension or change the belt.

Starter turns slowly: Battery power is low. Battery needs to be recharged. Battery drains quickly. Service battery or replace it. Corroded battery terminals or disconnected wires. Connect wiring properly or install new terminals.

Starter doesn't crank: Battery is low or faulty. Need to charge or replace the battery. Battery wiring is disconnected or improperly connected. Inspect wiring and connect as required. Battery power is low. Recharge the battery. Starter motor failing. Change or repair starter.