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New Holland TD75D Troubleshooting

New Holland TD75D Diesel Engine Troubleshooting

Engine hard to start or doesn't start: Dirty fuel filter. Replace filter element. Air in the fuel pipes. Bleed the fuel pipes. Defective or clogged injection nozzle. Replace injection nozzles. Faulty fuel injection pump. Replacement or repair required.

Engine shuts off suddenly while running: Improper setting of fuel injection pump timing. Check the fuel injection pump timing adjustment. Dirty fuel filter. Clean or change the filter. Engine is cold. Warm up engine as required.

Diesel starts but immediately stops: Fuel filter element is clogged. Service the filter. Fuel injection pump is faulty. Change or repair the pump. Air filter plugged. Clean or change the filter.

Engine overheated: Clogged radiator fins or leaking radiator cap. Clean radiator or change cap. Low coolant level. Add coolant fluid and inspect the cooling system for leaks. Fan belt is worn or faulty. The fan belt needs to be replaced. Not enough engine oil. Checking oil level and add if necessary.

Diesel engine is losing power: Fuel injection nozzles are clogged or faulty. If necessary, replace with a new nozzle. Restricted fuel lines or hoses. Clean fuel lines and hoses. Clogged air cleaner. Change air filter element. Cylinder-head gasket is broken. Replace the gasket as required.

Engine noises or knocks: Engine has not warmed up to the recommended temperature. Engine is not warmed up to the required temperature. Lack of engine oil. Need to add engine oil. Improper fuel injection timing. Set the fuel pump timing correctly. Worn or scored pistons. Pistons need to be replaced. Connecting rod is misaligned or worn. Need to align or replace the connecting rod.

Engine stalls while idling: Incorrectly set low idle speed. Need to adjust idle speed. The valve clearance is not adjusted. Check and adjust as required. Fuel injection pump failure. Change or repair the pump.

Oil pressure too low: Engine oil insufficient. Add oil to the engine crankcase. Oil pump is defective. Replace as required. Dirty oil filter. Change or service engine oil filter.

New Holland TD75D Transmission Troubleshooting

Transmission noises: Backlash is incorrect or gears are damaged. Install new gears and set backlash correctly. Shift forks are worn or bent. Replace the shift forks. Damaged or worn shaft splines. Shaft need to be changed. Transmission fluid insufficient. Check and refill the transmission fluid. Worn or damaged bearings. Change the bearings. Transmission fluid is dirty. Transmission fluid change required.

Gear shift is hard: Worn or rusty gear shift linkage. Install a new gear shift linkage. Unadjusted or worn clutch. Replace or adjust clutch. Shift forks are worn or bent. Shift forks need to be changed. Defective parts in the gearshift mechanism. Replace defective parts.

Low transmission fluid pressure: Insufficient transmission oil. Fill up the transmission oil. Plugged transmission oil filter (if equipped). Service or change transmission oil filter. Relief valve failure. Replace relief valve.

External fluid leaks: Worn seals or gaskets. Install new gaskets or seal. Transmission fluid level is high. Correct the fluid level.

New Holland TD75D Hydraulic System Troubleshooting

Hydraulic system overheats: Hydraulic fluid type is wrong. Use correct type of hydraulic fluid. Hydraulic oil contamination. Change the oil. Air in the hydraulic system. Air bleeding. Damaged main relief valve. Relief valve replacement required.

Insufficient hydraulic fluid pressure: Low hydraulic fluid level. Checking hydraulic fluid level and add if necessary. Clogged hydraulic fluid filter. Change hydraulic filter element or clean if necessary. Leaking hydraulic pipes. Inspect hydraulic system for leaks and repair it. Hydraulic control valve block is set improperly. Set properly. Faulty hydraulic pump. Change or repair hydraulic oil pump. Hydraulic cylinder is broken. Repair or replace hydraulic cylinder.

Hitch not raising or hitch raises slowly: Hydraulic pump is defective. Change or repair hydraulic fluid pump. Main relief valve is damaged. Relief valve need to be replaced. Damaged hydraulic spool valve. Repair or change the valve. Damaged hydraulic cylinder. Change or repair hydraulic cylinder. Hydraulic oil level low. Check and refill the hydraulic oil. Clogged hydraulic oil filter element. Clean or change hydraulic filter. Hitch is under excessive load. Reduce loading.

3-point hitch does not lower or lowers very slowly: Hydraulic cylinder not working. Repair or replace hydraulic cylinder. Hydraulic spool valve is out of adjustment. Spool valve adjustment required. Damaged hitch rock shaft. Install a new shaft. Hitch is out of adjustment. Adjustment is required.

Hitch lifting or lowering is jerky: Hydraulic oil contamination. Change the oil. Hydraulic pump is faulty. Replace or repair hydraulic oil pump. Air in hydraulic pipes. Bleed hydraulic pipes. Hydraulic spool valve block is defective. Install a new valve or repair it. Hydraulic cylinder is defective. Repair or replace hydraulic cylinder.

New Holland TD75D Steering System Troubleshooting

Excessive steering wheel play: Steering column shaft or coupling has maximum wear. Replace faulty component. Damaged hydraulic steering pump. Repair or replace steering pump. Steering linkage parts are loose or worn. Repair or replace steering linkage. Hydrostatic steering unit has damage or wear. Replace or repair steering unit as required.

Steering wheel is hard to turn: Air in steering system. Bleed air from system. Steering filter is dirty. Replace steering filter element. Steering oil insufficient. Check and refill steering oil. Hydrostatic steering unit has wear or malfunction. Inspect and replace as required. Steering pump is faulty. Install a new steering pump. Worn or stuck pump flow control valve. Install a new flow control valve or clean it. Improperly assembled or defective steering column. Reassemble or change the steering column. Uneven wear on front tyres. Replace the tyres. Not adjusted toe-in. Check toe-in and correct. Steering cylinder leaks. Change damaged piston rod or worn seal sleeves.

Tractor is pulling to right or left: Hydrostatic steering unit is worn or defective. Inspect and change as required. Steering cylinder is damaged. 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. Front wheel bearings are defective or improperly adjusted. Adjust properly or change bearings. Uneven tire pressure. Inflate the tires properly.

New Holland TD75D Electrical System Troubleshooting

Battery is not charging: Electrical cable connections are corroded or loose. Service or tighten connections. Faulty electrical terminal connectors. Change terminal connectors. Battery bad cell. Replace the battery. Loose or defective belt. Adjust belt tension or install a new belt.

Starter turns slow: Low battery power. Low battery charging, charge as required. Battery is not holding charge. Service battery or replace it. Faulty battery terminals or disconnected cables. Check wire connections and change or service terminals.

Starter is not working: Battery is discharged or defective. Recharge or change battery. Wiring is incorrectly connected or disconnected. Inspect wiring and connect correctly. Battery capacity is low. Charge the battery. Starter motor is defective. Repair or replace starter.