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New Holland L75 Troubleshooting

New Holland L75 Engine Troubleshooting

Diesel engine hard to start or doesn't start: Fuel filter element is dirty. Service the filter. There is air in the fuel system. Bleed the system. Fuel injection nozzles are dirty or defective. Check injection nozzles and replace if required. Defective fuel injection pump. Replace or repair injection pump.

Engine stalls during operation: Wrong setting of fuel injection pump timing. Adjust fuel injection pump as required. Fuel filter plugged. Change the filter element. Engine is not fully warmed up. Warm up the engine.

Diesel starts but immediately stops: Fuel filter plugged. Clean the filter or install new filter element. Defective fuel injection pump. Rebuild or replace pump. Air filter clogged. Air filter maintenance required.

Engine is overheated: Clogged radiator fins or leaking radiator cap. Clean radiator or replace cap. Low engine coolant. Add coolant fluid and inspect the cooling system for leaks. Damaged or worn fan belt. Change as required. Lack of engine oil. Fill the crankcase with engine oil.

Engine lacks power: Fuel injection nozzles are faulty or clogged. Check and replace nozzles if required. Clogged fuel hoses or lines. Service fuel hoses and lines. Dirty air cleaner. Carry out maintenance on air filter. Cylinder-head gasket is broken. Cylinder-head gasket replacement required.

Engine knocking sound or abnormal noise: Engine is cold. Warm up to required temperature. Lack of engine oil. Checking oil level and add if necessary. Wrong setting of fuel injection pump timing. Check the fuel injection pump timing adjustment. Pistons are worn or broken. Install new pistons. Connecting rod is defective or misaligned. Alignment procedure or replacement is required.

Engine stops at low idle speed: Low idle speed adjustment is incorrect. Adjust as required. The valve clearance is not adjusted. Adjust to proper valve clearance. Fuel injection pump malfunction. Repair or change injection pump.

Low oil pressure: Engine oil level low. Add oil to the engine crankcase. Worn oil pump. Remove and inspect oil pump. Oil filter clogging. Clean or change engine oil filter.

New Holland L75 Transmission Troubleshooting

Transmission makes noise: Incorrect backlash or gears are worn. Replace defective gears or set backlash properly. Worn or damaged gear shift forks. Change the shift forks. Damaged or worn shaft splines. Replace defective shaft. Transmission fluid insufficient. Checking transmission fluid level and add if necessary. Worn or damaged bearings. Bearings replacement required. Transmission oil contamination. Change the oil.

Hard shifting: Gear shift linkage is corroded or worn. Replace or lubricate the shift linkage. Clutch is out of adjustment or defective. Adjust correctly or replace. Worn or bent gear shift forks. Change the shift forks. Gear shifting mechanism is defective. Defective parts must be replaced.

Insufficient transmission fluid pressure: Insufficient transmission oil. Add oil to the transmission housing. Transmission fluid filter element is clogged (if equipped). Service or replace the transmission fluid filter. Relief valve is damaged. Replace the valve.

Transmission fluid leakage: Damaged gaskets or seals. Seals and gaskets replacement required. Transmission oil level is exceeded. Correct the oil volume.

New Holland L75 Hydraulics Troubleshooting

Hydraulic system overheats: Improper type of hydraulic oil. Use the proper type of oil. Contaminated hydraulic fluid. Change hydraulic fluid. There is air in the hydraulic system. Bleed hydraulic system. Main relief valve malfunctioning. Change relief valve.

Insufficient hydraulic fluid pressure: Hydraulic fluid is insufficient. Fill up the hydraulic fluid. Dirty hydraulic oil filter element. Clean the hydraulic filter element or replace if necessary. Leaking hydraulic pipes. Check the system and repair leaks. Incorrect adjusted hydraulic control valve. Adjust correctly. Defective hydraulic pump. Repair or replace hydraulic fluid pump. Broken hydraulic cylinder. Install a new hydraulic cylinder or repair it.

Three-point hitch cannot be lifted or lifting is too slow: Faulty hydraulic pump. Install a new hydraulic fluid pump. Main relief valve malfunction. Install a new relief valve. Hydraulic control valve block is damaged. Repair or change the valve. Damaged hydraulic cylinder. Install a new hydraulic cylinder or repair it. Insufficient hydraulic oil. Fill the system to proper hydraulic oil level. Clogged hydraulic oil filter. Replace hydraulic filter element or service if necessary. Excessive loading on the hitch. Reduce the load is required.

Hitch fails to drop or drops slowly: Hydraulic cylinder is faulty. Repair or change hydraulic cylinder. Hydraulic control valve is out of adjustment. Need to make adjustment. Hitch rock shaft is worn. Change the shaft. Three-point hitch is out of adjustment. The 3-point hitch must be adjusted.

Jerky lowering or lifting of the hitch: Hydraulic fluid contamination. Change hydraulic fluid. Hydraulic pump malfunction. Change or repair hydraulic fluid pump. Air in the hydraulic system. Air bleeding. Hydraulic control valve is defective. Install a new hydraulic valve or repair it. Hydraulic cylinder malfunction. Change or repair hydraulic cylinder.

New Holland L75 Steering Troubleshooting

Excessive free play of steering wheel: Worn steering column coupling or shaft. Change defective part. Steering pump is faulty. Check the hydraulic steering pump and change if necessary. Loose or worn steering linkage components. Check and change as required. Faulty or worn power steering control valve. Repair or replace the steering control valve.

Steering is difficult: Air in the hydraulic steering system. Bleed the steering system. Dirty steering filter element. Steering filter need to be replaced. Steering fluid level is insufficient. Add oil to steering system. Worn or damaged power steering control valve. Repair or replace the control valve. Steering pump is worn. Steering pump needs to be replaced or repaired. Steering pump control valve is faulty or stuck. Replace or clean flow control valve. Damaged or incorrectly assembled steering column. Replace steering column or assemble correctly. Tire pressure is uneven. Adjust the tire pressure. Not adjusted toe-in. Adjust toe-in properly. Leaking steering cylinder. Replace worn seal sleeves or damaged piston rod.

Front wheels wander to right or left: Power steering control valve has malfunction or wear. Repair or replace the steering control valve. Steering cylinder is faulty. Replace or repair steering cylinder. Incorrect toe-in. Adjust toe-in wheels. Loose or worn steering linkage components. Replace or repair steering linkage. Front wheel bearings are damaged or incorrectly adjusted. Adjust correctly or replace bearings. Tire pressure uneven. Inflate the tires correctly.

New Holland L75 Electrical System Troubleshooting

Battery cannot be charged: Corroded or loose electrical wire connections. Tighten or service cable connections. Battery terminal clamps are faulty. Terminal clamps need to be replaced. Battery dead cell. Battery change required. Belt is defective or loose. Need to adjust belt tension or replace belt.

Starter turns slow: Battery voltage is low. Recharge the battery. Battery drains quickly. Service battery or change it. Disconnected cables or faulty battery terminals. Connect cables correctly or replace terminals.

Starter will not crank: Battery is drained or worn. Recharge or replace battery. Wiring harness is disconnected or improperly connected. Check wiring harness and connect as required. Low battery voltage. Battery is drained, charge it. Faulty starter motor. Repair or change starter.