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Massey Ferguson 451 Troubleshooting

Massey Ferguson 451 Diesel Engine Troubleshooting

Engine hard to start or will not start: Fuel filter plugging. Change filter element. Air in fuel tank. Bleed fuel tank. Fuel injection nozzles are damaged or dirty. If necessary, replace with a new nozzle. Damaged fuel injection pump. Repair or replace injection pump.

Engine stops running suddenly: Improper setting of fuel injection pump timing. Adjust as recommended. Dirty fuel filter. Clean or change the filter. Low coolant temperature. Normalize the temperature by warming up the engine.

Diesel starts and stops: Fuel filter element clogging. Service or replace the filter. Fuel injection pump is damaged. Rebuild or replace pump. Clogged air cleaner. Clean air cleaner element.

Engine overheating: Faulty radiator cap or dirty radiator fins. Clean radiator or install new cap. Insufficient coolant. Refill to the correct level and inspect system for leaks. Fan belt slipping or worn. Install new fan belt. Engine oil level is insufficient. Check oil level and add oil as required.

Engine power is too low: Clogged injection nozzle. Clean or change injection nozzles. Dirty fuel hoses or lines. Clean fuel system lines and hoses. Dirty air filter element. Clean or replace element. Blown cylinder head gasket. Install new cylinder head gasket.

Engine knocks or noises: Coolant temperature is low. Warm up engine as required. Engine oil level is insufficient. Fill up the oil to required level. Wrong setting of fuel injection pump timing. Check the fuel injection pump timing adjustment. Pistons are broken or worn. Have pistons replaced. Connecting rod failure or misalignment. Alignment procedure or replacement is required.

Engine stops at low idle speed: Wrong adjustment of low idle speed. Adjust as required. Excessive valve clearance. Correct valve clearance needs to be set. Fuel injection pump malfunctioning. Rebuild or change fuel pump.

Low oil pressure: Not enough oil in the engine. Need to add oil. Defective oil pump. Install a new pump. Oil filter element clogged. Clean or replace engine oil filter element.

Massey Ferguson 451 Transmission Troubleshooting

Transmission noise: Gears are defective or backlash is improper. Adjust backlash properly or replace the gears. Shift forks are bent or worn out. Replace the shift forks. Shaft splines are stuck or worn out. Shaft need to be changed. Transmission oil insufficient. Add oil to the transmission housing. Worn or broken bearings. Faulty bearings should be replaced. Transmission oil contamination. Transmission oil change required.

Gears are hard to shift: Rusty or worn gear shift linkage. Shift linkage need to be replaced. Unadjusted or worn clutch. Adjust or install new clutch. Shift forks are worn or bent. Shift forks need to be changed. Gearshift mechanism malfunction. Identify and replace failed parts.

Low transmission fluid pressure: Transmission oil insufficient. Fill the transmission housing to proper oil level. Transmission fluid filter element is clogged (if equipped). Service or change transmission fluid filter. Stuck relief valve. Replace relief valve as required.

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

Massey Ferguson 451 Hydraulics Troubleshooting

Hydraulics overheating: Improper hydraulic fluid type. Use the proper type of hydraulic fluid. Contaminated hydraulic oil. Change hydraulic oil. Air in hydraulic lines. Bleed hydraulic lines. Main relief valve is damaged. Replace relief valve.

Low hydraulic system pressure: Hydraulic oil level low. Check and refill the hydraulic oil. Dirty hydraulic fluid filter. Clean or replace the hydraulic filter. Leaks in hydraulic pipes. Check the hydraulic system and fix leaks. Hydraulic control valve block is not set properly. Use the proper setting. Faulty hydraulic pump. Repair or replace hydraulic fluid pump. Broken hydraulic cylinder. Repair or change hydraulic cylinder.

Hitch does not raise or raises very slowly: Hydraulic pump not working. Change or repair hydraulic oil pump. Main relief valve is damaged. Replace relief valve. Hydraulic spool valve is damaged. Repair or replace the valve. Broken hydraulic cylinder. Install a new hydraulic cylinder or repair it. Hydraulic oil level low. Check and refill the hydraulic oil. Clogged hydraulic fluid filter. Clean the hydraulic filter element or replace if necessary. Excessive load on hitch. Reduce the load is required.

3-point hitch can't drop or drops too slowly: Faulty hydraulic cylinder. Repair or install a new hydraulic cylinder. Hydraulic control valve is set improperly. The control valve must be set correctly. Damaged hitch rock shaft. Install a new shaft. Unadjusted hitch. Adjust 3-point hitch as required.

3-point hitch jerks when lower or lift: Contaminated hydraulic oil. Change hydraulic oil. Hydraulic pump malfunction. Install a new hydraulic oil pump. Air in hydraulic pipes. Bleed hydraulic pipes. Hydraulic control valve is defective. Install a new valve or repair it. Hydraulic cylinder is broken. Change or repair hydraulic cylinder.

Massey Ferguson 451 Steering Troubleshooting

Excessive play in steering: Steering column shaft or coupling is worn out. Replace faulty part. Steering pump failure. Install a new steering pump. Steering linkage joints are worn or loose. Change or repair steering linkage. Power steering control valve has wear or malfunction. Repair or replace the steering control valve.

Steering wheel is very heavy to turn: Air in the hydraulic steering system. Bleed air from system. Dirty steering filter. Clean steering filter element. Steering fluid level low. Checking steering fluid level and add it if necessary. Power steering control valve has damage or wear. Change or repair steering control valve if required. Steering pump stopped working. Steering pump needs to be replaced or repaired. Damaged or stuck steering pump control valve. Replace or clean flow control valve. Improperly fitted or damaged steering column. Refit or change the steering column. Tires have uneven wear. Replace the tires. Improper toe-in. Check and adjust toe-in. Steering cylinder leakage. Replace worn cylinder seals or scratched piston rod.

Tractor is pulling to left or right: Power steering control valve is defective or worn. Check and replace as required. Faulty steering cylinder. Replace or repair hydraulic steering cylinder. Not adjusted toe-in. Adjust toe-in wheels. Loose or worn steering linkage components. Replace or repair steering linkage. Worn or incorrectly adjusted or worn front wheel bearings. Replace the bearings or adjust it properly. Front tires are worn unevenly. Install new tires.

Massey Ferguson 451 Electrical Troubleshooting

Battery does not charge: Electrical wire connections are corroded or loose. Tighten or service connections. Battery terminal connectors are defective. Terminal connectors should be replaced. Bad cell in battery. Battery replacement required. Belt is loose or defective. Change belt or adjust belt tension.

Starter turns slow: Low battery output. Battery is drained, recharge it. Battery won’t hold charge. Service charging system or replace battery. Disconnected battery cables or bad terminals. Check wire connections and change or service terminals.

Starter motor won't turn: Battery is low or faulty. Recharge or replace battery. Wiring is incorrectly connected or disconnected. Inspect wiring and connect correctly. Battery power is low. Battery is drained, charge it. Starter motor is damaged. Replace or repair starter.