Specifications, Service and Repair of Farm and Lawn Tractors

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New Holland TVT170 Troubleshooting

New Holland TVT170 Engine Troubleshooting

Engine starts hard or doesn't start: Fuel filter element is dirty. Clean the filter element. Air in the fuel system. Air bleeding. Defective injection nozzle. Service or change injection nozzles. Faulty fuel injection pump. Rebuild or change fuel pump.

Diesel shuts off while driving: Wrong setting of fuel injection pump timing. Adjust according to specifications. Clogged fuel filter. Change filter element. Engine is not preheated. Engine is not warmed up to the required temperature.

Engine starts but stalls suddenly: Fuel filter element is clogged. Replace filter element. Fuel injection pump is defective. Repair or install new pump. Dirty air filter. Clean air cleaner element.

Engine overheating: Radiator fins are clogged or radiator cap is faulty. Clean radiator or install new cap. Low coolant level. Fill the cooling system and check components for leaks or other faults. Fan belt is loose or defective. Install new fan belt. Insufficient engine oil. Check and refill engine oil.

Poor engine power: Damaged or dirty injection nozzles. Clean or change injection nozzles. Fuel lines or hoses clogging. Fuel lines and hoses need to be cleaned. Air filter clogged. Clean or change. Cylinder-head gasket is leaking. Install a new gasket.

Abnormal engine knocking or noise: Engine has not warmed up to the recommended temperature. Normalize the temperature by warming up the engine. Not enough engine oil. Fill up the oil to required level. Improper fuel injection timing. Check the fuel injection pump timing adjustment. Pistons are worn or scored. Pistons need to be replaced. Connecting rod is defective or misaligned. Connecting rod must be aligned or replaced.

Engine stops while idling: Low idle speed setting is not correct. Test and adjust. Valve clearance is wrong. Check and adjust as required. Fuel injection pump is damaged. Change or repair the pump.

Insufficient oil pressure: Oil level is insufficient. Fill up the engine oil. Oil pump is worn or damaged. Install a new pump. Oil filter element is dirty. Service or change engine oil filter element.

New Holland TVT170 CVT Transmission Troubleshooting

CVT transmission noises: Speed control linkage is worn or unadjusted. Adjust or repair linkage. Transmission overloaded. Reduce loading. Low transmission oil level or contaminated oil. Change transmission oil or top up to proper level. Relief valve malfunction. Replace relief valve as required. Worn or defective transmission components. Check hydrostatic transmission components for defect or damage and change if necessary.

Transmission oil over heats: Excessive loading. Load needs to be reduced. Cooling components are defective or plugged. Inspect all cooling components and replace or clean if necessary. Transmission fluid level is low. Add fluid to the transmission housing. Transmission oil filter is dirty. Clean or replace the transmission filter.

Power is too low: Transmission fluid insufficient. Add fluid to the transmission housing. Relief valve is damaged. Replace relief valve. Worn or out of adjustment speed control linkage. Replace or adjust linkage.

External fluid leaks: Clogged transmission fluid return pipe. Clean or change return pipe. Damaged seals or gaskets. Install new components. High internal transmission case pressure. Check transmission parts for damage or wear and replace if required.

New Holland TVT 170 Hydraulics Troubleshooting

Hydraulic system overheating: Incorrect hydraulic fluid type. Fill up with the proper type of fluid. Hydraulic fluid is dirty. Hydraulic fluid change required. Air in the hydraulic system. Air bleeding. Defective main relief valve. Relief valve replacement required.

Hydraulic fluid pressure too low: Hydraulic fluid level low. Fill up the hydraulic fluid. Hydraulic oil filter is clogged. Clean the hydraulic filter or install new filter element. Leaks in hydraulic pipes. Identify leaks in the system and repair it. Hydraulic control valve block is set improperly. Set properly. Damaged hydraulic pump. Replace or repair hydraulic fluid pump. Faulty hydraulic cylinder. Repair or change hydraulic cylinder.

Hitch does not raise or raises very slowly: Hydraulic pump malfunction. Install a new hydraulic oil pump. Main relief valve malfunctioning. Replace relief valve. Faulty hydraulic spool valve. Repair or replace hydraulic valve. Damaged hydraulic cylinder. Change or repair hydraulic cylinder. Hydraulic oil level low. Checking hydraulic oil level and add if necessary. Dirty hydraulic fluid filter element. Change hydraulic filter element or clean if necessary. Heavy load on the hitch. Reduce hitch load.

Hitch cannot be lowered or lowering is too slowly: Damaged hydraulic cylinder. Repair or change hydraulic cylinder. Hydraulic control valve is out of adjustment. Need to make adjustment. Lift arm shaft is damaged. Replace the shaft. Hitch is out of adjustment. Adjust 3-point hitch as required.

Hitch lift or drop is not smoothly: Hydraulic fluid contamination. Change hydraulic fluid. Hydraulic pump failure. Install a new hydraulic oil pump. Air in hydraulic pipes. Bleed hydraulic pipes. Hydraulic control valve is defective. Repair or change the valve. Damaged hydraulic cylinder. Repair or install a new hydraulic cylinder.

New Holland TVT 170 Steering Troubleshooting

Excessive free play of steering wheel: Steering column shaft or coupling is worn out. Change defective part. Defective hydraulic steering pump. Install a new hydraulic steering pump. Loose or worn steering linkage parts. Check and change as required. Steering control unit has malfunction or wear. Repair or change the steering unit.

Heavy steering: Air in the hydraulic steering system. Bleed the steering system. Steering filter is clogged. Service steering filter. Lack of steering oil. Fill the steering system with oil. Defective or worn steering control unit. Replace or repair steering unit as required. Faulty steering pump. Repair or change steering pump. Steering pump control valve is faulty or stuck. Service or replace flow control valve. Incorrectly installed or worn steering column. Install the steering column correctly or replace it. Uneven tyre pressure. Inflate the tyres properly. Not adjusted toe-in. Check toe-in and correct. Steering cylinder is leaking. Replace scratched piston rod or worn cylinder seals.

Tractor pulls to left or right: Steering control unit has wear or malfunction. Inspect and replace as required. Steering cylinder failure. Change or repair hydraulic steering cylinder. Improper toe-in. Adjust toe-in properly. Worn or loose steering linkage assembly. Inspect and change as required. Front wheel bearings are worn or incorrectly adjusted. Adjust correctly or change bearings. Front tyres wear unevenly. Change the tyres.

New Holland TVT170 Electrical System Troubleshooting

Battery is not charging: Loose or corroded wire connections. Service or tighten connections. Defective battery terminal connectors. Install new terminal connectors. Battery faulty cell. Battery change required. Belt is damaged or loose. Belt needs to be adjusted or changed.

Starter turns slow: Low battery capacity. Recharge the battery. Battery discharges quickly. Service or replace the battery. Battery cables are disconnected or terminals are faulty. Connect wiring correctly or install new terminals.

Starter will not crank: Battery is discharged or defective. Change or recharge battery. Battery cables are disconnected or incorrectly connected. Check cables and connect as needed. Low battery power. Recharge the battery. Starter motor is faulty. Repair or replace starter.

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