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New Holland TN75DA Troubleshooting

New Holland TN75DA Engine Troubleshooting

Engine starts up hard or will not start: Fuel filter element is dirty. Clean the filter element. Air in the fuel pipes. Bleed the fuel pipes. Fuel injection nozzles are faulty or clogged. Test injection nozzles and change if necessary. Defective fuel injection pump. Replace injection pump or repair it.

Engine stops unexpectedly during operation: Improper fuel injection timing. Set it up as required. Fuel filter element clogging. Change the filter element. Engine is cold. Engine is not warmed up to the required temperature.

Engine starts and stalls suddenly: Fuel filter element is dirty. Change filter element. Damaged fuel injection pump. Change pump or rebuild it. Dirty air filter element. Clean or change.

Engine overheated: Dirty radiator core or faulty radiator cap. Replace cap or clean radiator. Not enough coolant. Add coolant fluid to cooling system and also check it for leaks. Fan belt is worn or faulty. Belt change is required. Not enough engine oil. Checking oil level and add if necessary.

Diesel power loss: Faulty or dirty injection nozzles. Change fuel injection nozzles. Dirt in the fuel hoses or lines. Clean fuel system hoses and lines. Air filter element clogged. Clean or change. Cylinder head gasket is defective. Replace the gasket as required.

Engine knocking or noise: Low coolant temperature. Warm up the engine. Lack of engine oil. Fill up the engine oil. Improper setting of fuel injection pump timing. Adjust fuel injection pump as required. Pistons are broken or worn. Install new pistons. Connecting rod is defective or misaligned. Connecting rod needs to be aligned or changed.

Engine stalls while idle: Low idle speed set incorrectly. Adjust low idling as recommended. Improper valve clearance. Adjust valve clearance. Fuel injection pump is not working correctly. Change pump or rebuild it.

Insufficient oil pressure: Lack of oil. Fill up the engine oil. Oil pump failure. Install a new pump. Oil filter is clogged. Replace or clean engine oil filter element.

New Holland TN75DA Transmission Troubleshooting

Transmission noise: Defective gears or improper backlash. Adjust backlash properly or replace the gears. Worn or bent gear shift forks. Change the shift forks. Damaged or worn shaft splines. Change the shaft. Low fluid level. Need to add transmission fluid. Worn or cracked bearings. Change the bearings. Transmission fluid is dirty. Change the fluid.

Hard to shift gears: Corroded or worn gear shift linkage. Install new shift linkage. Clutch is out of adjustment or defective. Adjust correctly or replace. Worn or bent gear shift forks. Replace defective shift forks. Worn gear shifting mechanism. Repair or change worn components if necessary.

Transmission oil pressure is insufficient: Low fluid level. Check and refill the transmission fluid. Transmission oil filter element clogging (if equipped). Service or change transmission oil filter. Relief valve malfunction. Replace valve as required.

Transmission fluid leakage: Worn seals or gaskets. Replace worn seal or gaskets. High transmission fluid level. Drain the excess fluid.

New Holland TN75DA Hydraulic System Troubleshooting

Hydraulics overheating: Hydraulic fluid type is incorrect. Pour the correct type of fluid. Hydraulic fluid contamination. Change hydraulic fluid. Air in hydraulic system. Bleed air from hydraulic system. Main relief valve failure. Replace relief valve.

Low hydraulic fluid pressure: Hydraulic oil is insufficient. Check and refill the hydraulic oil. Hydraulic oil filter is clogged. Service the hydraulic filter or change if required. Leaking hydraulic pipes. Identify leaks in the system and repair it. Incorrect setting hydraulic control valve. Use the correct adjustment. Hydraulic pump is faulty. Replace or repair hydraulic oil pump. Hydraulic cylinder failure. Repair or change hydraulic cylinder.

Three-point hitch cannot be lifted or lifting is too slow: Hydraulic pump is faulty. Replace or repair hydraulic oil pump. Main relief valve malfunctioning. Relief valve need to be replaced. Damaged hydraulic control valve. Repair or replace the valve. Damaged hydraulic cylinder. Repair or change hydraulic cylinder. Low hydraulic oil level. Check and refill the hydraulic oil. Hydraulic oil filter is clogged. Clean or change hydraulic filter. Heavy load on the hitch. Reduce loading.

3-point hitch cannot be lowered or lowering is too slowly: Hydraulic cylinder failure. Replace or repair hydraulic cylinder. Hydraulic control valve block is set improperly. Set properly. Worn lift arm shaft. Change the shaft. Three-point hitch has not been adjusted. Adjust three-point hitch as required.

Hitch drop or lift is jerky: Dirty hydraulic oil. The oil must be changed. Defective hydraulic pump. Install a new hydraulic oil pump. Air in hydraulic lines. Bleed hydraulic lines. Hydraulic control valve block is defective. Repair or replace hydraulic valve. Damaged hydraulic cylinder. Install a new hydraulic cylinder or repair it.

New Holland TN75DA Steering Troubleshooting

Excessive play in steering: Steering column coupling or shaft is worn. Replace faulty component. Steering pump is faulty. Replace or repair steering pump. Steering linkage joints are worn or loose. Check and replace as required. Worn or defective hydrostatic steering unit. Replace or repair steering unit as required.

Steering wheel is very heavy to turn: Air in the hydraulic steering system. Bleed air from system. Steering filter clogging. Replace steering filter element. Low steering oil level. Fill up the steering oil. Hydrostatic steering unit is damaged or worn. Repair or replace the steering unit. Worn steering pump. Install a new hydraulic steering pump. Stuck or worn pump flow control valve. Clean or install new control valve. Damaged or incorrectly assembled steering column. Replace steering column or assemble correctly. Uneven wear on front tires. Replace the tires. Not adjusted toe-in. Adjust toe-in wheels. Steering cylinder leaks. Change damaged piston rod or worn piston seals.

Tractor pulls to left or right: Worn or damaged hydrostatic steering unit. Inspect and change as required. Steering cylinder failure. Replace or repair steering cylinder. Incorrect toe-in. Adjust toe-in properly. Steering linkage assembly is worn or loose. Check and change as required. Incorrectly adjusted or worn front wheel bearings. Install new bearings or adjust it correctly. Uneven tire pressure. Inflate the tires properly.

New Holland TN75DA Electrical System Troubleshooting

Battery is not charging: Electrical cable connections are loose or corroded. Clean or tighten wiring connections. Defective battery terminal clamps. Terminal clamps should be changed. Battery failing. Use a new battery. Belt is defective or loose. Install a new belt or adjust belt tension.

Starter cranks slowly: Low battery capacity. Battery needs to be recharged. Battery does not hold charge. Service battery or change it. Disconnected wires or corroded battery terminals. Check cable connections and replace or service terminals.

Starter is not cranking: Battery is low or faulty. Recharge or replace battery. Battery wires are disconnected or incorrectly connected. Check wires and connect correctly. Low battery output voltage. Battery needs to be recharged. Faulty starter motor. Starter needs to be replaced.