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New Holland 8340 Troubleshooting

New Holland 8340 Diesel Engine Troubleshooting

Engine hard to start or will not start: Fuel filter element is clogged. Clean the filter or install new filter element. Air trapped in fuel system. Bleed air. Fuel injection nozzles are damaged. Change fuel injection nozzles. Fuel injection pump is faulty. Replace or repair injection pump.

Engine stops suddenly during operation: Fuel injection pump timing is not adjusted. Set up as recommended. Fuel filter element is dirty. Clean the filter element. Engine is cold. Warm up engine as required.

Diesel starts but then stops: Fuel filter element is dirty. Clean the filter or install new filter element. Fuel injection pump is defective. Rebuild or install a new injection pump. Air cleaner is dirty. Carry out maintenance on air filter.

Engine overheated: Dirty radiator core or faulty radiator cap. Clean radiator or replace cap. Low engine coolant. The cooling system needs to be refilled and checked for faults. Fan belt slipping or worn. Change as required. Not enough engine oil. Add oil to the engine crankcase.

Low engine power: Fuel injection nozzles are faulty or clogged. Change fuel injection nozzles. Restricted fuel lines or hoses. Service fuel lines and hoses. Clogged air cleaner. Replace air filter element. Cylinder head gasket is blown. Replace the gasket as required.

Engine knocks or noises: Low coolant temperature. Warm up engine as required. Not enough engine oil. Add oil to the engine crankcase. Improper fuel injection timing. Adjust the pump as required. Pistons are broken or worn. Pistons need to be replaced. Connecting rod is misaligned or defective. Connecting rod needs to be aligned or changed.

Engine stops when idle: Incorrect low idle speed adjustment. Test and adjust. Incorrect valve clearance. Adjustment procedure required. Fuel injection pump is broken. Repair or change injection pump.

Oil pressure is low: Lack of oil. Fill crankcase to proper oil level. Defective oil pump. Install a new pump. Oil filter element is dirty. Change or service engine oil filter.

New Holland 8340 Transmission Troubleshooting

Transmission noise: Backlash is incorrect or gears are damaged. Adjust backlash properly or replace the gears. Shift forks are worn or bent. Install new shift forks. Stuck or worn shaft splines. Install a new shaft. Lack of transmission oil supply. Fill the transmission housing to proper oil level. Worn or broken bearings. Replace faulty bearings. Transmission oil is dirty. Fill up with fresh transmission oil.

Hard shifting: Gear shift linkage is corroded or worn. Lubricate or replace the shift linkage. Worn or unadjusted clutch. Adjust correctly or replace. Worn or bent shift forks. Change the shift forks. Worn gear shifting mechanism. Repair or change worn components if necessary.

Transmission fluid pressure is insufficient: Insufficient transmission oil. Fill up the transmission oil. Plugged transmission oil filter (if equipped). Clean or change transmission oil filter. Defective relief valve. Install a new relief valve.

Transmission oil leakage: Damaged seals or gaskets. Seals and gaskets replacement required. High transmission fluid level. Drain the excess fluid.

New Holland 8340 Hydraulics Troubleshooting

Hydraulic system overheats: Hydraulic oil type is incorrect. Pour the correct type of oil. Hydraulic fluid is contaminated. Fill up with new hydraulic fluid. Air in the hydraulic system. Air bleeding. Damaged main relief valve. Replace relief valve.

Low hydraulic oil pressure: Insufficient hydraulic fluid. Fill up the hydraulic fluid. Clogged hydraulic fluid filter element. Service the hydraulic filter or change if required. Leaks in hydraulic lines. Check the system and repair leaks. Hydraulic spool valve block is not adjusted properly. The spool valve should be properly adjusted. Defective hydraulic pump. Install a new hydraulic fluid pump. Damaged hydraulic cylinder. Replace or repair hydraulic cylinder.

Hitch does not raise or raises very slowly: Defective hydraulic pump. Install a new hydraulic oil pump. Main relief valve failure. Relief valve must be changed. Hydraulic control valve is faulty. Replace or repair the valve. Hydraulic cylinder is defective. Replace or repair hydraulic cylinder. Hydraulic fluid is insufficient. Checking hydraulic fluid level and add if necessary. Hydraulic fluid filter element is clogged. Hydraulic filter maintenance required. Excessive hitch loading. Reduce hitch load.

Hitch cannot be lowered or lowering is too slowly: Hydraulic cylinder is faulty. Repair or change hydraulic cylinder. Hydraulic control valve is set improperly. The control valve must be set correctly. Lift arm shaft is worn. Install a new shaft. Unadjusted hitch. Adjust the hitch.

Hitch lift or drop is jerky: Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Defective hydraulic pump. Install a new hydraulic fluid pump. Air trapped in hydraulic system. Bleed air from system. Defective hydraulic control valve block. Repair or replace the valve. Hydraulic cylinder malfunction. Change or repair hydraulic cylinder.

New Holland 8340 Steering System Troubleshooting

Excessive free play of steering wheel: Steering column shaft or coupling is worn out. Change defective part. Steering pump failure. Replace or repair steering pump. Worn or loose steering linkage assembly. Change or repair steering linkage. Faulty or worn hydrostatic steering unit. Change or repair steering unit if required.

Stiff steering: Air in the hydraulic steering system. Bleed the system of air. Dirty steering filter. Clean steering filter element. Steering fluid level low. Checking steering fluid level and add it if necessary. Hydrostatic steering unit has damage or wear. Replace or repair steering unit as required. Worn steering pump. Steering pump needs to be replaced or repaired. Pump flow control valve is damaged or stuck. Clean or install new control valve. Improperly assembled or defective steering column. Reassemble or change the steering column. Uneven tyre pressure. Inflate the tyres properly. Not adjusted toe-in. Check and adjust toe-in. Steering cylinder leaks. Change damaged piston rod or worn piston seals.

Tractor is pulling to left or right: Worn or damaged hydrostatic steering unit. Change or repair steering unit if required. Worn steering cylinder. Change or repair steering cylinder. Not adjusted toe-in. Check and adjust toe-in. Steering linkage parts are loose or worn. Inspect and change as required. Front wheel bearings are worn or incorrectly adjusted. Replace the bearings or adjust it properly. Front tires are worn unevenly. Install new tires.

New Holland 8340 Electrical System Troubleshooting

Battery will not charge: Wiring connections are corroded or loose. Service or tighten connections. Defective battery terminal connectors. Terminal connectors should be replaced. Dead cell in battery. Battery change required. Damaged or loose belt. Adjust belt tension or replace belt.

Starter turns slowly: Low battery capacity. Battery is drained, recharge it. Battery discharges quickly. Battery needs to be serviced or replaced. Corroded battery terminals or disconnected wires. Connect wires correctly or change terminals.

Starter does not work: Battery is discharged or defective. Charge or replace the battery. Battery wires are disconnected or incorrectly connected. Check wires and connect correctly. Low battery capacity. Battery is drained, charge it. Defective starter motor. Starter needs to be replaced.