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New Holland Powerstar 75 Troubleshooting

Powerstar 75 Engine Troubleshooting

Diesel hard to start or doesn't start: Fuel filter element is clogged. Service the filter. Air in fuel system. Bleed fuel system. Fuel injection nozzles are faulty or clogged. Clean or replace injection nozzles. Fuel injection pump is broken. Rebuild or install a new injection pump.

Engine shuts off while running: Incorrect adjustment of fuel injection pump timing. Use the correct fuel injection pump timing adjustment. Fuel filter element clogging. Change the filter element. Low coolant temperature. Warm up the engine.

Diesel starts but stalls suddenly: Clogged fuel filter. Service or replace the filter. Fuel injection pump malfunction. Change or repair the pump. Clogged air filter. Replace air filter element.

Engine is overheated: Defective radiator cap or clogged radiator core. Install new cap or clean radiator. Engine has a lack of coolant. Top up coolant fluid and check system for leaks. Excessive wear of the fan belt. Change the fan belt. Engine oil level is insufficient. Need to add engine oil.

Engine loses power: Faulty fuel injection nozzles. Change fuel injection nozzles. Clogged fuel lines or hoses. Clean fuel hoses and lines. Air filter is clogged. Service or replace the air filter. Cylinder-head gasket is leaking. Install a new gasket.

Engine noises or knocks: Low coolant temperature. Warm up the engine. Engine oil level is low. Check and refill engine oil. Improper fuel injection timing. Adjust as recommended. Pistons are broken or worn. Install new pistons. Misaligned or faulty connecting rod. Align or change connecting rod.

Engine stalls at idle: Wrong adjustment of low idle speed. Adjust low idling as recommended. Excessive valve clearance. Correct valve clearance needs to be set. Fuel injection pump failure. Repair or replace injection pump.

Low oil pressure: Engine oil level low. Fill the crankcase with oil. Oil pump malfunction. Inspect and change as required. Oil filter clogging. Clean or change engine oil filter.

Powerstar 75 Transmission Troubleshooting

Transmission makes excessive noise: Gears are defective or backlash is improper. Install new gears and set backlash correctly. Damaged or worn gear shift forks. Replace defective shift forks. Stuck or worn shaft splines. Shaft need to be changed. Insufficient transmission fluid. Need to add transmission fluid. Worn or damaged bearings. Bearings need to be replaced. Transmission fluid is contaminated. Change the fluid.

Difficult to shift gears: Corroded or worn gear shift linkage. Change or lubricate shift linkage. Clutch is out of adjustment or defective. Adjust clutch or change if necessary. Damaged or worn gear shift forks. Replace the shift forks. Gear shifting mechanism is defective. Defective parts must be replaced.

Insufficient transmission fluid pressure: Transmission fluid insufficient. Checking transmission fluid level and add if necessary. Transmission oil filter element clogging (if equipped). Service or replace the transmission oil filter. Defective relief valve. Change the valve.

External oil leaks: Broken seals or gaskets. Seals and gaskets need to be replaced. Transmission fluid level is high. Correct the fluid level.

Powerstar 75 Hydraulics Troubleshooting

Excessive hydraulic system heat: Incorrect type of hydraulic fluid. Use the correct type of fluid. Hydraulic fluid contamination. Change hydraulic fluid. Air in hydraulic pipes. Bleed hydraulic pipes. Main relief valve failure. Install a new relief valve.

Insufficient hydraulic oil pressure: Insufficient hydraulic fluid. Checking hydraulic fluid level and add if necessary. Dirty hydraulic fluid filter. Replace filter element or clean if required. Leaking hydraulic lines. Find leaks in the system and fix it. Incorrect setting hydraulic control valve. Use the correct adjustment. Hydraulic pump is defective. Replace or repair hydraulic fluid pump. Defective hydraulic cylinder. Replace or repair hydraulic cylinder.

3-point hitch can't lift or lifts too slowly: Hydraulic pump failure. Repair or replace hydraulic oil pump. Main relief valve is faulty. Relief valve replacement required. Hydraulic control valve is faulty. Install a new valve or repair it. Hydraulic cylinder is faulty. Repair or replace hydraulic cylinder. Low hydraulic fluid level. Fill the system to proper hydraulic fluid level. Clogged hydraulic fluid filter. Clean or replace the hydraulic filter. Heavy load on the hitch. Reduce hitch load.

Hitch not lowering or hitch lowers slowly: Faulty hydraulic cylinder. Repair or replace hydraulic cylinder. Hydraulic control valve is not set properly. Adjust properly. Damaged hitch rock shaft. Replace the shaft. Unadjusted hitch. The 3-point hitch must be adjusted.

Hitch jerks when drop or lift: Contaminated hydraulic fluid. Change hydraulic fluid. Hydraulic pump malfunction. Change or repair hydraulic fluid pump. Air in hydraulic system. Bleed air from hydraulic system. Damaged hydraulic spool valve. Repair or replace hydraulic valve. Hydraulic cylinder is broken. Replace or repair hydraulic cylinder.

Powerstar 75 Steering Troubleshooting

Excessive play in steering: Worn steering column coupling or shaft. Change faulty part. Worn steering pump. Steering pump needs to be repaired or replaced. Worn or loose steering linkage joints. Change or repair steering linkage. Power steering control valve has wear or damage. Repair or replace the control valve.

Steering wheel turns hard: Air lock in hydraulic steering system. Bleed the steering system. Steering filter element is clogged. Service or replace the steering filter. Steering oil level low. Add oil to steering system. Power steering control valve has wear or damage. Repair or replace steering control valve. Steering pump is worn. Check the hydraulic steering pump and change if necessary. Pump flow control valve is worn or stuck. Clean or replace 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. Check and adjust toe-in. Steering cylinder leaks. Damaged cylinder seals or worn piston rod.

Tractor is pulling to left or right: Power steering control valve is damaged or worn. Change or repair control valve if required. Damaged steering cylinder. Replace or repair hydraulic steering cylinder. Improper toe-in. Check and adjust toe-in. Steering linkage joints are worn or loose. Inspect and change as required. Worn or incorrectly adjusted or worn front wheel bearings. Adjust properly or replace bearings. Tires have uneven wear. Replace the tires.

Powerstar 75 Electrical System Troubleshooting

Battery cannot be charged: Loose or corroded electrical wiring connections. Service or tighten connections. Electrical terminal connectors are faulty. Terminal connectors need to be changed. Battery bad cell. Battery replacement required. Loose or worn belt. Belt needs to be adjusted or replaced.

Starter motor turns slow: Low battery power. Battery is drained, charge it. Battery won’t hold charge. Service or replace the battery. Corroded battery terminals or disconnected wires. Connect wiring properly or install new terminals.

Starter does not work: Battery is discharged or worn. Replace or charge as required. Battery wires are disconnected or incorrectly connected. Check wires and connect correctly. Low battery output voltage. Charge the battery. Defective starter motor. Repair or replace starter.