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New Holland TS90 Troubleshooting

New Holland TS90 Engine Troubleshooting

Engine starts up hard or doesn't start: Fuel filter element is dirty. Clean the filter or install new filter element. Air in the fuel lines. Bleed the fuel lines. Fuel injection nozzles are faulty or clogged. Check and replace nozzles if required. Damaged fuel injection pump. Change pump or rebuild it.

Engine shuts off suddenly while running: Improper fuel injection timing. Check the fuel injection pump timing adjustment. Dirty fuel filter. Clean the filter or install new filter element. Low coolant temperature. Normalize the temperature by warming up the engine.

Diesel starts and stalls immediately: Fuel filter element is dirty. Change the filter element. Fuel injection pump is not operating properly. Rebuild or change fuel pump. Clogged air cleaner. Clean or change the filter.

Engine overheating: Defective radiator cap or clogged radiator fins. Clean radiator or change cap. Coolant level is low. Fill radiator to proper level and check components for faults. Damaged or worn fan belt. Fan belt must be replaced. Insufficient engine oil. Need to add engine oil.

Engine power loss: Faulty fuel injection nozzles. Service or change injection nozzles. Clogged fuel hoses or lines. Clean fuel system hoses and lines. Clogged air filter. Service air cleaner. Blown cylinder head gasket. Change cylinder head gasket.

Abnormal engine knocking or noise: Engine has not warmed up to the recommended temperature. Warm up to required temperature. Insufficient engine oil. Add oil to the engine crankcase. Fuel injection pump timing is not adjusted. Adjust the pump as required. Piston wear or scoring. Pistons replacement required. Connecting rod is worn or misaligned. Align or replace connecting rod.

Engine stops at low idle speed: Wrong adjustment of low idle speed. Need to adjust idle speed. Valve clearance is not correct. Check and adjust. Fuel injection pump is faulty. Rebuild or replace pump.

Low oil pressure: Lack of oil. Fill up the engine oil. Oil pump is worn or damaged. Inspect and change as required. Clogged oil filter. Service or replace engine oil filter.

New Holland TS90 Transmission Troubleshooting

Transmission makes noise: Defective gears or improper backlash. Adjust backlash correctly or replace the gears. Worn or bent shift forks. Shift forks need to be changed. Worn or damaged shaft splines. Change defective shaft. Transmission fluid level is low. Add fluid to the transmission housing. Bearings are cracked or worn. Faulty bearings should be changed. Transmission fluid contamination. Change the fluid.

Gear shift is hard: Stuck or worn gear shift linkage. Install new shift linkage. Worn or unadjusted clutch. Change or adjust clutch. Worn or damaged gear shift forks. Install new shift forks. Gear shifting mechanism is defective. Defective parts must be replaced.

Low transmission oil pressure: Low fluid level. Check and refill the transmission fluid. Dirty transmission oil filter element (if equipped). Clean or replace the transmission filter. Relief valve is stuck. Replace relief valve.

Transmission fluid leakage: Broken seals or gaskets. Change defective gaskets or seal. Transmission oil level is exceeded. Correct the oil volume.

New Holland TS90 Hydraulics Troubleshooting

Excessive hydraulic system heat: Hydraulic oil type is wrong. Correct type of oil must be used. Dirty hydraulic fluid. The fluid must be changed. There is air in the hydraulic system. Bleed hydraulic system. Main relief valve failure. Change relief valve.

Low hydraulic fluid pressure: Low hydraulic oil level. Need to add oil. Hydraulic fluid filter element is clogged. Service the hydraulic filter or change if required. Leaking hydraulic lines. Inspect the system for leaks and fix it. Incorrect adjusted hydraulic control valve. Adjust correctly. Hydraulic pump failure. Install a new hydraulic fluid pump. Hydraulic cylinder is faulty. Change or repair hydraulic cylinder.

Hitch does not raise or raises very slowly: Faulty hydraulic pump. Repair or replace hydraulic fluid pump. Main relief valve is defective. Replace relief valve. Faulty hydraulic spool valve. Repair or change hydraulic valve. Broken hydraulic cylinder. Replace or repair hydraulic cylinder. Low hydraulic fluid level. Checking hydraulic fluid level and add if necessary. Clogged hydraulic fluid filter. Service the hydraulic filter or change if required. Excessive load on hitch. Reduce hitch load.

Hitch fails to drop or drops slowly: Hydraulic cylinder failure. Replace or repair hydraulic cylinder. Hydraulic control valve is out of adjustment. Need to make adjustment. Hitch cross shaft is worn. Replace the shaft. The three-point hitch is not adjusted. The 3-point hitch must be adjusted.

Hitch drop or lift is jerky: Hydraulic fluid is dirty. Hydraulic fluid change required. Defective hydraulic pump. Replace or repair hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic control valve block is defective. Repair or change hydraulic valve. Faulty hydraulic cylinder. Replace or repair hydraulic cylinder.

New Holland TS90 Steering System Troubleshooting

Excessive play in steering: Steering column shaft or coupling has maximum wear. Change defective component. Hydraulic steering pump is defective. Replace or repair steering pump. Worn or loose steering linkage joints. Inspect and replace as required. Hydrostatic steering unit has wear or malfunction. Check and replace as required.

Steering is difficult: Air in steering hydraulic system. Bleed the steering system. Dirty steering filter. Service steering filter. Lack of steering oil. Fill the steering system with oil. Hydrostatic steering unit has damage or wear. Check and replace as required. Steering pump is worn. Check the steering pump and replace if necessary. Pump flow control valve is worn or stuck. Service or replace flow control valve. Improperly fitted or damaged steering column. Refit or change the steering column. Front tyres wear unevenly. Change the tyres. Incorrect toe-in. Adjust toe-in properly. Steering cylinder is leaking. Replace worn cylinder seals or scratched piston rod.

Tractor pulls to left or right: Hydrostatic steering unit has malfunction or wear. Repair or change the steering unit. Steering cylinder is faulty. Repair or replace hydraulic steering cylinder. Not adjusted toe-in. Adjust toe-in properly. Loose or worn steering linkage parts. Repair or replace steering linkage. Incorrectly adjusted or worn front wheel bearings. Adjust properly or replace bearings. Front tires are worn unevenly. Install new tires.

New Holland TS90 Electrical System Troubleshooting

Battery will not charge: Electrical wire connections are loose or corroded. Tighten or clean electrical wiring connections. Faulty battery terminal connectors. Terminal connectors should be replaced. Defective battery. Change the battery. Belt is loose or defective. Adjust belt tension or change the belt.

Starter cranks slowly: Battery voltage is low. Battery needs to be recharged. Battery drains quickly. Service charging system or replace battery. Corroded battery terminals or disconnected wires. Check wiring connections and replace or clean terminals.

Starter is not working: Battery is discharged or defective. Replace or charge as required. Battery wiring is disconnected or improperly connected. Inspect wiring and connect as required. Low battery output. Low battery charging, charge as required. Damaged starter motor. Starter should be replaced.