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New Holland 4835 Troubleshooting

New Holland 4835 Diesel Engine Troubleshooting

Diesel engine hard to start or doesn't start: Fuel filter plugged. Clean or replace the filter. Air in the fuel system. Air bleeding. Fuel injection nozzles fault. Change fuel injection nozzles. Fuel injection pump damage. Replace or repair injection pump.

Engine shuts off suddenly while running: Wrong setting of fuel injection pump timing. Set up as recommended. Fuel filter element is clogged. Clean the filter element. Engine not warmed up. Normalize the temperature by warming up the engine.

Engine starts and stops suddenly: Fuel filter element is dirty. Clean the filter element. Fuel injection pump is not working correctly. Rebuild or change fuel pump. Plugged air filter. Replace air filter element.

Engine overheats: Faulty radiator cap or dirty radiator fins. Replace cap or clean radiator. Insufficient coolant. Add coolant and check the components of cooling system. Loose or damaged fan belt. If necessary, replace the belt. Engine oil insufficient. Check oil level and add oil as required.

Reduced engine power: Faulty fuel injection nozzles. Install a new kit of correctly balanced nozzles. Clogged fuel hoses or lines. Service fuel hoses and lines. Intake air restriction. Change air filter element. Cylinder head gasket is blown. Replace the gasket as required.

Abnormal engine noise or knocking: Engine is cold. Normalize the temperature by warming up the engine. Low engine oil level. Checking oil level and add if necessary. Wrong setting of fuel injection pump timing. Adjust the pump as required. Pistons are scored or worn. Have pistons replaced. Faulty or misaligned connecting rod. Align or replace connecting rod.

Engine stalls when idling: Incorrectly adjusted low idle speed. Correct low idle settings. The valve clearance is incorrect. Correct valve clearance needs to be set. Defective fuel injection pump. Install a new pump or rebuild.

Oil pressure is insufficient: Insufficient engine oil. Checking oil level and add if necessary. Oil pump is defective. Install a new pump. Clogged oil filter element. Change or service engine oil filter.

New Holland 4835 Transmission Troubleshooting

Transmission is excessively noisy: Backlash is incorrect or gears are damaged. Change worn gears or adjust backlash correctly. Shift forks are bent or worn out. Change the shift forks. Damaged or worn shaft splines. Change defective shaft. Lack of transmission oil supply. Fill the transmission housing with oil. Bearings are cracked or worn. Faulty bearings should be replaced. Transmission fluid is dirty. Transmission fluid change required.

Gear shift is hard: Stuck or worn gear shift linkage. Lubricate or replace the shift linkage. Improperly adjusted or worn clutch. Change or adjust clutch. Shift forks are worn or bent. Shift forks need to be changed. Gearshift mechanism malfunction. Identify and replace failed parts.

Low transmission oil pressure: Lack of transmission oil supply. Add oil to the transmission housing. Dirty transmission oil filter element (if equipped). Clean or change transmission oil filter. Relief valve is stuck. Install a new valve.

Transmission fluid leaking: Damaged seals or gaskets. Seals and gaskets replacement required. Transmission fluid level is exceeded. Excess fluid must be drained.

New Holland 4835 Hydraulics Troubleshooting

Hydraulic system is too hot: Incorrect type of hydraulic oil. The correct type of oil must be used. Contaminated hydraulic oil. Change hydraulic oil. There is air in the hydraulic system. Bleed hydraulic system. Defective main relief valve. Relief valve replacement required.

Hydraulic oil pressure is insufficient: Hydraulic oil is insufficient. Checking hydraulic oil level and add if necessary. Hydraulic oil filter element is clogged. Service or replace the hydraulic filter. Leaking hydraulic lines. Check the hydraulic system and fix leaks. Hydraulic control valve is out of adjustment. Need to make adjustment. Hydraulic pump malfunction. Install a new hydraulic oil pump. Defective hydraulic cylinder. Repair or install a new hydraulic cylinder.

Hitch won't raise or raises slowly: Hydraulic pump is defective. Repair or replace hydraulic oil pump. Defective main relief valve. Relief valve replacement required. Hydraulic spool valve block is defective. Repair or replace hydraulic valve. Hydraulic cylinder failure. 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. Excessive loading on the hitch. Reduce hitch load.

Hitch cannot be dropped or dropping is too slow: Hydraulic cylinder is broken. Replace or repair hydraulic cylinder. Hydraulic spool valve is out of adjustment. Spool valve adjustment required. Damaged hitch rock shaft. Change the shaft. Hitch is out of adjustment. Adjust the 3-point hitch.

Hitch drop or lift is jerky: Dirty hydraulic fluid. The fluid must be changed. Hydraulic pump is faulty. Replace or repair hydraulic fluid pump. Air trapped in hydraulic system. Bleed air from system. Defective hydraulic spool valve block. Repair or replace hydraulic valve. Hydraulic cylinder is faulty. Install a new hydraulic cylinder or repair it.

New Holland 4835 Steering Troubleshooting

Excessive free play of steering wheel: Steering column coupling or shaft has maximum wear. Replace faulty component. Defective hydraulic steering pump. Check the hydraulic steering pump and change if necessary. Loose or worn steering linkage components. Check and change as required. Power steering control valve has malfunction or wear. Repair or replace the steering control valve.

Steering is difficult: Air in steering system. Bleed the system of air. Steering filter is clogged. Change steering filter element. Steering fluid level is insufficient. Add oil to steering system. Defective or worn power steering control valve. Check and replace as required. Steering pump stopped working. Repair or replace steering pump. Faulty or stuck pump flow control valve. Flush or change flow control valve. Incorrectly installed or worn steering column. Install the steering column correctly or replace it. Front tires wear unevenly. Change the tires. Incorrect toe-in. Adjust toe-in wheels. Steering cylinder leakage. Replace scratched piston rod or worn cylinder seals.

Tractor is pulling to right or left: Worn or defective power steering control valve. Replace or repair steering control valve as required. Faulty steering cylinder. Repair or change steering cylinder. Not adjusted toe-in. Check toe-in and correct. Worn or loose steering linkage joints. Repair or replace steering linkage. Improperly adjusted or defective front hub bearings. Adjust properly or change bearings. Front tires are worn unevenly. Install new tires.

New Holland 4835 Electrical Troubleshooting

Battery is not charging: Electrical cable connections are corroded or loose. Service or tighten cable connections. Electrical terminal connectors are faulty. Terminal connectors should be replaced. Bad cell in battery. Change the battery. Loose or worn belt. Adjust belt tension or change the belt.

Starter cranks slowly: Low battery output voltage. Battery is drained, recharge it. Battery runs out quickly. Battery needs to be serviced or replaced. Wires are disconnected or battery terminals are corroded. Check cables and service or change terminals.

Starter doesn't crank: Battery is low or faulty. Charge or change the battery. Battery wiring is disconnected or improperly connected. Inspect wiring and connect as required. Low battery output voltage. Battery is drained, charge it. Starter motor failing. Repair or change starter.