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New Holland Workmaster 70 Troubleshooting

Workmaster 70 Engine Troubleshooting

Engine difficult to start or doesn't start: Fuel filter plugged. Change filter element. Air in fuel system. Bleed fuel system. Defective injection nozzle. Install a new kit of correctly balanced nozzles. Fuel injection pump is defective. Repair or change injection pump.

Engine stalls while running: Wrong setting of fuel injection pump timing. Adjust fuel injection pump as required. Fuel filter element is clogged. Replace the filter element. Low coolant temperature. Warm up engine as required.

Engine stalls after starting: Clogged fuel filter. Clean or change the filter. Fuel injection pump is faulty. Rebuild or replace pump. Air filter is dirty. Air filter maintenance required.

Engine overheats: Radiator fins are dirty or radiator cap is defective. Replace cap or clean radiator. Coolant level is low. Add coolant fluid to cooling system and also check it for leaks. Fan belt is worn or faulty. Change as required. Engine oil level is insufficient. Checking oil level and add if necessary.

Loss of engine power: Clogged injection nozzle. Check and replace nozzles if required. Restricted fuel hoses or lines. Clean fuel hoses and lines. Dirty air cleaner. Clean or change the filter. Cylinder head gasket is damaged. Gasket should be replaced.

Engine knocking or noise: Engine is not preheated. Warm up to required temperature. Engine oil level is low. Add oil to the engine crankcase. Incorrect adjustment of fuel injection pump timing. Adjust according to specifications. Broken or worn pistons. Install new pistons. Misaligned or defective connecting rod. Need to change or align the connecting rod.

Engine stops while idling: Improperly adjusted low idle speed. Correct low idle settings. Improper valve clearance. Need to adjust valve clearance. Defective fuel injection pump. Repair or change injection pump.

Oil pressure is insufficient: Engine oil level low. Add oil to the engine crankcase. Worn oil pump. Check and replace if necessary. Dirty oil filter element. Change or service engine oil filter.

Workmaster 70 Transmission Troubleshooting

Transmission makes noise: Defective gears or improper backlash. Change worn gears or adjust backlash correctly. Shift forks are bent or worn out. Shift forks need to be changed. Shaft splines are worn or stuck. Change the shaft. Transmission oil level is low. Check and refill the transmission oil. Bearings are cracked or worn. Bearings need to be replaced. Transmission fluid is contaminated. Fill up with fresh transmission fluid.

Hard shifts: Gear shift linkage is corroded or worn. Install new shift linkage. Worn or unadjusted clutch. Clutch replacement or adjustment required. Worn or damaged gear shift forks. Shift forks need to be replaced. Defective parts in the gearshift mechanism. Replace defective parts.

Low transmission fluid pressure: Lack of transmission fluid. Checking transmission fluid level and add if necessary. Clogged transmission fluid filter (if equipped). Clean or change transmission fluid filter. Relief valve is damaged. Install a new valve.

Transmission oil leakage: Damaged gaskets or seals. Change defective seal or gaskets. Transmission oil level is exceeded. Correct the oil volume.

Workmaster 70 Hydraulic System Troubleshooting

Hydraulic system is too hot: Wrong hydraulic fluid type. Pour the proper type of fluid. Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Air trapped in hydraulic system. Bleed air from system. Main relief valve is defective. Relief valve replacement required.

Low hydraulic fluid pressure: Insufficient hydraulic oil. Checking hydraulic oil level and add if necessary. Clogged hydraulic oil filter element. Clean or change hydraulic filter. Leaks in hydraulic lines. Check the hydraulic system and fix leaks. Incorrect adjusted hydraulic control valve. Adjust correctly. Hydraulic pump is faulty. Change or repair hydraulic fluid pump. Hydraulic cylinder not working. Replace or repair hydraulic cylinder.

Hitch not raising or hitch raises slowly: Faulty hydraulic pump. Change or repair hydraulic fluid pump. Main relief valve failure. Relief valve need to be replaced. Hydraulic spool valve is faulty. Repair or replace hydraulic valve. Faulty hydraulic cylinder. Repair or replace hydraulic cylinder. Hydraulic oil is insufficient. Need to add oil. Hydraulic oil filter is clogged. Service or replace the hydraulic filter. Excessive loading on the hitch. Reduce hitch load.

Hitch not lowering or hitch lowers slowly: Defective hydraulic cylinder. Repair or replace hydraulic cylinder. Incorrect adjusted hydraulic spool valve. Adjust the spool valve correctly. Damaged hitch cross shaft. Replace the shaft. The 3-point hitch is not adjusted. Adjust the hitch.

Hitch drop or lift is jerky: Contaminated hydraulic fluid. Change hydraulic fluid. Defective hydraulic pump. Repair or replace hydraulic oil pump. Air in hydraulic lines. Bleed hydraulic lines. Damaged hydraulic control valve. Repair or change hydraulic valve. Damaged hydraulic cylinder. Repair or replace hydraulic cylinder.

Workmaster 70 Steering System Troubleshooting

Excessive play in steering: Steering column shaft or coupling has maximum wear. Replace defective part. Steering pump failure. Check the steering pump and replace if necessary. Loose or worn steering linkage components. Replace or repair steering linkage. Worn or defective steering control unit. Repair or replace the steering control unit.

Hard Steering: Air in steering hydraulic system. Bleed air from system. Clogged steering filter. Install new steering filter element. Steering oil insufficient. Check and refill steering oil. Steering control unit has malfunction or wear. Repair or change the steering control unit. Hydraulic steering pump is defective. Repair or change steering pump. Steering pump control valve is worn or stuck. Change or flush control valve. Improperly assembled or defective steering column. Reassemble or change the steering column. Uneven tyre pressure. Inflate the tyres properly. Improper toe-in. Check and adjust toe-in. Steering cylinder leakage. Damaged cylinder seals or worn piston rod.

Tractor pulls to right or left: Steering control unit is damaged or worn. Repair or replace the steering control unit. Steering cylinder damage. Repair or change hydraulic steering cylinder. Improper toe-in. Adjust toe-in properly. Loose or worn steering linkage parts. Repair or replace steering linkage. Front wheel bearings are worn or incorrectly adjusted. Adjust properly or change bearings. Uneven wear on front tyres. Replace the tyres.

Workmaster 70 Electrical System Troubleshooting

Battery cannot be charged: Electrical wire connections are loose or corroded. Tighten or service cable connections. Faulty battery terminal connectors. Change terminal connectors. Defective battery. Change the battery. Belt is loose or defective. Adjust belt tension or install a new belt.

Starter cranks slowly: Battery power is low. Battery is drained, charge it. Battery runs out quickly. Service charging system or install new battery. Disconnected wiring or bad battery terminals. Connect wires properly or change terminals.

Starter will not work: Battery is discharged or defective. Recharge or change battery. Wiring is improperly connected or disconnected. Check wiring and connect properly. Low battery power. Battery is drained, charge it. Defective starter motor. Starter should be replaced.