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Massey Ferguson 481 Troubleshooting

Massey Ferguson 481 Engine Troubleshooting

Engine starts up hard or will not start: Dirty fuel filter. Change filter element. Air in fuel system. Bleed fuel system. Faulty or dirty injection nozzles. Replace injection nozzles. Fuel injection pump failure. Replace injection pump or repair it.

Engine stops running suddenly: Timing of fuel injection pump is incorrect. Set the fuel pump timing correctly. Clogged fuel filter. Clean or change the filter. Engine is cold. Normalize the temperature by warming up the engine.

Engine starts but then stops: Fuel filter plugging. Clean the filter element. Fuel injection pump malfunctioning. Rebuild or replace pump. Dirty air cleaner. Clean or change.

Engine overheats: Faulty radiator cap or dirty radiator fins. Clean radiator or change cap. Insufficient coolant fluid. Top up coolant fluid and check system for leaks. Excessive wear of the fan belt. Install new fan belt. Lack of engine oil. Checking oil level and add if necessary.

Engine power is too low: Dirty or damaged injection nozzles. Service or change injection nozzles. Fuel lines or hoses are clogged. Service fuel hoses and lines. Clogged air filter element. Replace air filter element. Cylinder head gasket is defective. Install a new gasket.

Engine knocking or noise: Engine is not warmed up to the required temperature. Warm up to required temperature. Engine oil insufficient. Check and refill engine oil. Improper setting of fuel injection pump timing. Set up as recommended. Broken or worn pistons. Install new pistons. Faulty or misaligned connecting rod. Need to change or align the connecting rod.

Engine stops at idle: Low idle speed setting is incorrect. Adjust low idle speed. Valve clearance is not correct. Adjust to proper valve clearance. Fuel injection pump is not working correctly. Rebuild or install a new injection pump.

Oil pressure too low: Low crankcase oil level. Add oil as required. Oil pump failure. Install a new pump. Oil filter is clogged. Replace or service engine oil filter.

Massey Ferguson 481 Transmission Troubleshooting

Transmission makes excessive noise: Damaged gears or incorrect backlash. Replace defective gears or set backlash properly. Worn or damaged gear shift forks. Shift forks need to be replaced. Damaged or worn shaft splines. Shaft need to be replaced. Transmission oil insufficient. Need to add transmission oil. Worn or damaged bearings. Faulty bearings should be changed. Transmission oil is dirty. Transmission oil change required.

Difficult to shift gears: Gear shift linkage is worn or rusty. Install new shift linkage. Improperly adjusted or worn clutch. Replace or adjust clutch. Shift forks are bent or worn out. Change the shift forks. Defective parts in the gearshift mechanism. Replace defective parts.

Lack of transmission oil pressure: Lack of transmission oil supply. Fill up the transmission oil. Transmission oil filter is dirty (if equipped). Clean or change transmission oil filter. Relief valve malfunction. Replace relief valve.

Transmission fluid leaking: Damaged seals or gaskets. Install new seal or gaskets. Transmission fluid level is high. Correct the fluid level.

Massey Ferguson 481 Hydraulic System Troubleshooting

Excessive hydraulic system heat: Wrong hydraulic fluid type. Pour the proper type of fluid. Dirty hydraulic fluid. The fluid must be changed. Air trapped in hydraulic system. Bleed air from system. Main relief valve malfunctioning. Relief valve need to be replaced.

Low hydraulic fluid pressure: Insufficient hydraulic oil. Fill the system to proper hydraulic oil level. Clogged hydraulic oil filter. Service the hydraulic filter or change if required. Leaks in hydraulic lines. Find leaks in the system and fix it. Incorrect adjusted hydraulic control valve. Adjust correctly. Hydraulic pump failure. Install a new hydraulic fluid pump. Damaged hydraulic cylinder. Replace or repair hydraulic cylinder.

Hitch can't lift or lifts too slowly: Hydraulic pump malfunction. Repair or replace hydraulic oil pump. Main relief valve is damaged. Replace relief valve. Hydraulic spool valve block is defective. Repair or change hydraulic valve. Hydraulic cylinder is faulty. Repair or install a new hydraulic cylinder. Hydraulic oil is insufficient. Need to add oil. Clogged hydraulic oil filter element. Clean or replace the hydraulic filter. Heavy load on the hitch. Reduce the load is required.

Hitch fails to drop or drops slowly: Hydraulic cylinder failure. Install a new hydraulic cylinder or repair it. Not adjusted hydraulic spool valve. Need to adjust spool valve. Lift arm shaft is worn. Change the shaft. The three-point hitch is not adjusted. Adjust as required.

Hitch lifting or lowering is jerky: Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Hydraulic pump failure. Replace or repair hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic spool valve is damaged. Change or repair hydraulic valve. Defective hydraulic cylinder. Repair or change hydraulic cylinder.

Massey Ferguson 481 Steering Troubleshooting

Excessive steering wheel play: Steering column coupling or shaft is worn. Change faulty part. Hydraulic steering pump is defective. Repair or change steering pump. Worn or loose steering linkage assembly. Change or repair steering linkage. Worn or damaged power steering control valve. Inspect and change as required.

Steering is hard: Air trapped inside steering system. Bleed the system of air. Steering filter clogging. Steering filter need to be replaced. Insufficient steering oil. Need to add steering oil. Power steering control valve has wear or malfunction. Check and replace as required. Worn steering pump. Repair or replace steering pump. Pump flow control valve is stuck or worn. Flush or change flow control valve. Incorrectly fitted or worn steering column. Refit or replace the steering column. Tire pressure uneven. Inflate the tires correctly. Incorrect toe-in. Adjust toe-in properly. Steering cylinder leakage. Replace damaged piston seals or worn piston rod.

Tractor pulls to left or right: Power steering control valve has wear or damage. Repair or change the steering control valve. Worn steering cylinder. Change or repair hydraulic steering cylinder. Improper toe-in. Adjust toe-in wheels. Steering linkage components are loose or worn. Replace or repair steering linkage. Defective or improperly adjusted front wheel bearings. Adjust correctly or install new bearings. Front tires wear unevenly. Change the tires.

Massey Ferguson 481 Electrical System Troubleshooting

Battery won’t charge: Loose or corroded wire connections. Service or tighten connections. Electrical terminal connectors are faulty. Install new terminal connectors. Battery faulty cell. Battery replacement required. Loose or defective belt. Belt needs to be adjusted or replaced.

Starter motor cranks slow: Low battery capacity. Low battery charging, charge as required. Battery drains quickly. Service battery or replace it. Terminals are faulty or battery cables are disconnected. Check wiring and clean or replace terminals.

Starter motor won't turn: Battery is low or faulty. Change or recharge battery. Disconnected or incorrectly connected wires. Inspect battery wires and connect correctly. Low battery capacity. Low battery charging, charge as required. Starter motor failing. Repair or change starter.