Specifications, Service and Repair of Farm and Lawn Tractors

________________________________________________________________________________

New Holland TVT190 Troubleshooting

New Holland TVT 190 Engine Troubleshooting

Engine hard to start or won't start: Fuel filter element is clogged. Clean or change the filter. Air in the fuel pipes. Bleed the fuel pipes. Faulty fuel injection nozzles. Install a new kit of correctly balanced nozzles. Fuel injection pump damage. Rebuild or replace pump.

Engine shuts off while running: Timing of fuel injection pump is incorrect. Adjust according to specifications. Fuel filter plugged. Filter maintenance required. Engine not warmed up. Warm up engine as required.

Diesel starts but stalls suddenly: Fuel filter plugged. Replace filter element. Fuel injection pump is broken. Change or repair the pump. Dirty air cleaner. Replace air filter element.

Engine overheated: Dirty radiator core or defective radiator cap. Change cap or clean radiator. Low coolant level. Top up coolant fluid and check system for leaks. Loose or damaged fan belt. Belt replacement is recommended. Lack of engine oil. Fill up the oil to required level.

Reduced engine power: Fuel injection nozzles fault. Install a new kit of correctly balanced nozzles. Restricted fuel hoses or lines. Service fuel hoses and lines. Air filter element clogged. Clean or change. Cylinder head gasket defective. Replace cylinder head gasket.

Engine knocking sound or abnormal noise: Low coolant temperature. Normalize the temperature by warming up the engine. Engine oil level is insufficient. Fill up the engine oil. Improper setting of fuel injection pump timing. Adjust according to specifications. Pistons are scored or worn. Pistons need to be replaced. Connecting rod is worn or not aligned. Connecting rod needs to be replaced or aligned.

Engine stalls when idle: Incorrect low idle speed adjustment. Adjust low idle speed. Valve clearance is not correct. Adjustment procedure required. Defective fuel injection pump. Rebuild or install a new injection pump.

Insufficient oil pressure: Not enough oil in the engine. Check oil level and add oil as required. Worn oil pump. Inspect and change as required. Dirty oil filter. Service or replace engine oil filter.

New Holland TVT190 CVT Transmission Troubleshooting

Continuously variable transmission transmission is excessively noisy: Speed control pedal linkage is damaged or out of adjustment. Adjust or install new linkage. Excessive loading. The load should be reduced. Oil is dirty or oil level is too low. Fill to required level or change the transmission oil. Relief valve is stuck. Change the valve. Defective or worn transmission parts. Check internal transmission parts for damage or wear and replace if required.

Transmission fluid overheating: Transmission overload. Reduce loading. Cooling components are defective or plugged. Inspect all cooling components and service or replace if necessary. Lack of transmission fluid. Fill the transmission housing to proper fluid level. Dirty transmission fluid filter element. Replace or service transmission fluid filter.

Power is insufficient: Insufficient transmission oil. Fill the transmission housing with oil. Relief valve is stuck. Install a new relief valve. Bent or unadjusted speed control pedal linkage. Adjust or install new linkage.

Transmission fluid leaking: Clogged oil drain line. Clean or replace drain line. Worn seals or gaskets. Change defective seal or gaskets. Internal transmission housing pressure is too high. Change defective parts.

New Holland TVT 190 Hydraulics Troubleshooting

Hydraulics overheating: Improper type of hydraulic oil. Use the proper type of oil. Dirty hydraulic fluid. The fluid must be changed. Air in the hydraulic system. Air bleeding. Main relief valve is defective. Change relief valve.

Hydraulic oil pressure is low: Insufficient hydraulic oil. Fill the system to proper hydraulic oil level. Dirty hydraulic fluid filter element. Clean the hydraulic filter element or replace if necessary. Leaks in hydraulic pipes. Identify leaks in the system and repair it. Incorrect adjusted hydraulic spool valve. Adjust the spool valve correctly. Hydraulic pump malfunction. Replace or repair hydraulic oil pump. Faulty hydraulic cylinder. Replace or repair hydraulic cylinder.

Hitch does not raise or raises very slowly: Defective hydraulic pump. Replace or repair hydraulic fluid pump. Main relief valve is faulty. Relief valve need to be replaced. Defective hydraulic control valve block. Replace or repair the valve. Hydraulic cylinder failure. Change or repair hydraulic cylinder. Low hydraulic oil level. Fill the system to proper hydraulic oil level. Dirty hydraulic fluid filter. Service the hydraulic filter or change if required. Excessive loading on the hitch. Reduce hitch load.

Hitch not lowering or hitch lowers slowly: Damaged hydraulic cylinder. Replace or repair hydraulic cylinder. Not adjusted hydraulic control valve. Need to adjust. Hitch cross shaft is worn. Install a new shaft. Three-point hitch is out of adjustment. Adjust as required.

Hitch drop or lift is jerky: Hydraulic fluid is dirty. Hydraulic fluid change required. Damaged hydraulic pump. Replace or repair hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic spool valve block is defective. Install a new valve or repair it. Damaged hydraulic cylinder. Repair or change hydraulic cylinder.

New Holland TVT190 Steering System Troubleshooting

Steering wheel free play is excessive: Steering column shaft or coupling is worn out. Replace faulty component. Worn steering pump. Steering pump needs to be repaired or replaced. Loose or worn steering linkage components. Repair or change steering linkage. Steering control unit has wear or damage. Change or repair steering control unit if required.

Steering is stiff: Air in steering system. Air-bleed steering system. Clogged steering filter element. Replace steering filter element. Steering oil level is insufficient. Checking steering oil level and add it if necessary. Steering control unit has wear or malfunction. Repair or change the steering control unit. Steering pump failure. Repair or replace steering pump. Stuck or faulty steering pump control valve. Service or change control valve. Defective or incorrectly mounted steering column. Change steering column or mount correctly. Front tyres wear unevenly. Change the tyres. Improper toe-in. Check toe-in and correct. Steering cylinder leaks. Damaged cylinder seals or worn piston rod.

Tractor pulls to left or right: Faulty or worn steering metering control unit. Inspect and change as required. Damaged steering cylinder. Change or repair hydraulic steering cylinder. Improper toe-in. Check and adjust toe-in. Steering linkage joints are worn or loose. Replace or repair steering linkage. Incorrectly adjusted or damaged front wheel bearings. Replace or adjust the bearings correctly. Tires have uneven wear. Replace the tires.

New Holland TVT190 Electrical Troubleshooting

Battery does not charge: Wiring connections are loose or corroded. Tighten or clean electrical wiring connections. Battery terminal connectors are defective. Replace terminal connectors. Battery failing. Use a new battery. Worn or loose belt. Replace belt or adjust belt tension.

Starter motor cranks slow: Low battery output voltage. Recharge the battery. Battery will not hold charge. Battery needs service or replacement. Terminals are faulty or battery cables are disconnected. Connect cables correctly or replace terminals.

Starter motor won't turn: Battery is low or faulty. Recharge or change battery. Wiring is incorrectly connected or disconnected. Inspect wiring and connect correctly. Low battery output voltage. Battery is drained, charge it. Starter motor failing. Repair or install a new starter.

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________