Specifications, Service and Repair of Farm and Lawn Tractors

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New Holland 8870 Troubleshooting

New Holland 8870 Diesel Engine Troubleshooting

Engine starts up hard or won't start: Fuel filter element is clogged. Clean or change the filter. Air in the fuel system. Air bleeding. Clogged or defective injection nozzles. Clean or change injection nozzles. Fuel injection pump malfunction. Rebuild or replace pump.

Engine shuts off while running: Improper fuel injection timing. Adjust fuel injection pump as required. Fuel filter element is clogged. Replace filter element. Engine is not warmed up to the required temperature. Warm up to required temperature.

Engine starts and stops suddenly: Fuel filter element is dirty. Replace filter element. Damaged fuel injection pump. Repair or change injection pump. Dirty air cleaner. Clean or change the filter.

Engine overheated: Dirty radiator fins or faulty radiator cap. Replace cap or clean radiator. Low coolant level. Add coolant fluid to cooling system and also check it for leaks. Fan belt is worn or faulty. Replace as required. Engine oil insufficient. Fill up the oil to required level.

Engine power loss: Clogged or defective injection nozzles. Replace injection nozzles. Dirt in the fuel hoses or lines. Clean fuel hoses and lines. Clogged air cleaner. Clean air cleaner element. Damaged cylinder-head gasket. Cylinder-head gasket replacement required.

Engine knocking or noise: Engine is not warmed up to the required temperature. Warm up to required temperature. Engine oil level is low. Add oil to the engine crankcase. Incorrect adjustment of fuel injection pump timing. Adjust fuel injection pump as required. Pistons are worn or broken. Replace the pistons as required. Connecting rod is worn or misaligned. Replace or align connecting rod.

Engine stops when idle: Incorrect low idle setting. Test and adjust. Incorrect valve clearance. Adjustment procedure required. Faulty fuel injection pump. Rebuild or replace pump.

Oil pressure is insufficient: Lack of oil. Fill crankcase to proper oil level. Worn oil pump. Remove and inspect oil pump. Clogged oil filter element. Replace or service engine oil filter.

New Holland 8870 Transmission Troubleshooting

Transmission noise: Gears are damaged or backlash is incorrect. Replace defective gears or set backlash properly. Worn or bent gear shift forks. Replace defective shift forks. Worn or stuck shaft splines. Replace defective shaft. Lack of transmission oil supply. Check transmission oil level and add oil as required. Worn or broken bearings. Bearings need to be replaced. Transmission fluid is dirty. Change the fluid.

Hard shifting: Gear shift linkage is rusty or worn. Shift linkage need to be replaced. Unadjusted or worn clutch. Replace or adjust clutch. Worn or bent gear shift forks. Install new shift forks. Worn parts of the gear shifting mechanism. Change worn parts.

Transmission fluid pressure is insufficient: Low fluid level. Need to add transmission fluid. Dirty transmission fluid filter element (if equipped). Service or replace the transmission fluid filter. Defective relief valve. Install a new relief valve.

Transmission fluid leaks: Damaged seals or gaskets. Install new components. High transmission oil level. Correct the oil level.

New Holland 8870 Hydraulics Troubleshooting

Hydraulic system overheats: Wrong type of hydraulic oil. Pour the correct type of hydraulic oil. Contaminated hydraulic oil. Change hydraulic oil. Air in hydraulic pipes. Bleed hydraulic pipes. Main relief valve malfunctioning. Replace relief valve.

Hydraulic fluid pressure too low: Insufficient hydraulic fluid. Fill up the hydraulic fluid. Hydraulic oil filter is clogged. Service the hydraulic filter or change if required. Leaking hydraulic pipes. Find leaks in the system and fix it. Hydraulic control valve block is not set properly. Use the proper setting. Hydraulic pump not working. Repair or replace hydraulic fluid pump. Hydraulic cylinder not working. Replace or repair hydraulic cylinder.

3-point hitch can't lift or lifts too slowly: Damaged hydraulic pump. Repair or replace hydraulic fluid pump. Defective main relief valve. Replace relief valve. Faulty hydraulic spool valve. Change or repair hydraulic valve. Faulty hydraulic cylinder. Repair or install a new hydraulic cylinder. Insufficient hydraulic oil. Need to add oil. Hydraulic oil filter is clogged. Service or replace the hydraulic filter. Excessive hitch loading. Reduce loading.

Hitch cannot be dropped or dropping is too slow: Hydraulic cylinder is defective. Install a new hydraulic cylinder or repair it. Incorrect setting hydraulic control valve. Use the correct adjustment. Hitch rock shaft is damaged. Install a new shaft. Unadjusted hitch. Adjust 3-point hitch as required.

Hitch lift or lower is jerky: Hydraulic oil is dirty. Hydraulic oil change required. Hydraulic pump is defective. Change or repair hydraulic fluid pump. Air in hydraulic pipes. Bleed hydraulic pipes. Defective hydraulic control valve block. Replace or repair the valve. Hydraulic cylinder failure. Repair or replace hydraulic cylinder.

New Holland 8870 Steering System Troubleshooting

Excessive free play of steering wheel: Steering column shaft or coupling has maximum wear. Change faulty part. Steering pump is worn. Install a new hydraulic steering pump. Steering linkage joints are worn or loose. Check and replace as required. Hydrostatic steering unit has damage or wear. Repair or replace the steering unit.

Heavy steering: Air lock in the steering system. Bleed air. Dirty steering filter element. Service steering filter. Not enough steering oil. Check oil level and add steering oil as required. Hydrostatic steering unit is damaged or worn. Repair or change the steering unit. Faulty steering pump. Repair or change steering pump. Pump flow control valve is stuck or worn. Clean or install new control valve. Worn or incorrectly fitted steering column. Replace the steering column or refit it correctly. Tire pressure uneven. Inflate the tires correctly. Incorrect toe-in. Check toe-in and correct. Leaking steering cylinder. Replace worn cylinder seals or scratched piston rod.

Tractor pulls to right or left: Hydrostatic steering unit has damage or wear. Repair or change the steering unit. Worn steering cylinder. Repair or change hydraulic steering cylinder. Incorrect toe-in. Adjust toe-in wheels. Steering linkage parts are loose or worn. Change or repair steering linkage. Defective or improperly adjusted front wheel bearings. Adjust correctly or install new bearings. Tire pressure is uneven. Adjust the tire pressure.

New Holland 8870 Electrical System Troubleshooting

Battery is not charging: Wiring connections are loose or corroded. Service or tighten cable connections. Faulty battery terminal clamps. Install new terminal clamps. Defective battery. Battery replacement required. Loose or worn belt. Replace belt or adjust belt tension.

Starter motor cranks slow: Battery voltage is low. Battery is drained, charge it. Battery drains quickly. Service charging system or replace battery. Disconnected wires or corroded battery terminals. Check wire connections and change or service terminals.

Starter is not working: Battery is discharged or worn. Recharge or replace battery. Disconnected or incorrectly connected wires. Inspect battery wires and connect correctly. Battery capacity is low. Recharge the battery. Starter motor failing. Starter should be replaced.

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