________________________________________________________________________________

Massey Ferguson 698T Troubleshooting

Massey Ferguson 698T Diesel Engine Troubleshooting

Diesel engine hard to start or doesn't start: Clogged fuel filter. Replace the filter element. There is air in the fuel system. Bleed the system. Fuel injection nozzles are faulty or clogged. Service or change injection nozzles. Fuel injection pump damage. Repair or install a new fuel pump.

Engine shuts off suddenly while running: Improper fuel injection timing. Set the fuel pump timing correctly. Fuel filter plugging. Change filter element. Engine not warmed up. Normalize the temperature by warming up the engine.

Diesel starts but then stops: Clogged fuel filter. Clean or replace the filter. Fuel injection pump is broken. Repair or install a new fuel pump. Dirty air cleaner. Clean or replace element.

Engine overheating: Radiator core is clogged or radiator cap is leaking. Clean radiator or replace cap. Coolant level is low. Add coolant and check the components of cooling system. Loose or defective fan belt. The fan belt needs to be replaced. Engine oil level is low. Check oil level and add oil as required.

Engine lacks power: Damaged or dirty injection nozzles. Test injection nozzles and change if necessary. Dirt in the fuel hoses or lines. Fuel hoses and lines must be clean. Clogged air cleaner. Clean air cleaner element. Cylinder head gasket is blown. Change cylinder head gasket.

Abnormal engine knocking or noise: Engine is not preheated. Warm up to required temperature. Not enough engine oil. Add oil to the engine crankcase. Wrong setting of fuel injection pump timing. Set the fuel pump timing correctly. Worn or broken pistons. Replace the pistons as required. Connecting rod is defective or misaligned. Connecting rod must be aligned or replaced.

Engine stops when idling: Low idle speed set incorrectly. Correct low idle settings. Incorrect valve clearance. Have it adjusted. Fuel injection pump failure. Rebuild or install a new injection pump.

Oil pressure is insufficient: Low oil level. Need to add oil. Oil pump is damaged. Remove and inspect oil pump. Plugged engine oil filter. Clean or replace engine oil filter element.

Massey Ferguson 698T Transmission Troubleshooting

Excessive transmission noise: Defective gears or improper backlash. Replace defective gears or set backlash properly. Shift forks are worn or bent. Change the shift forks. Shaft splines are worn or stuck. Install a new shaft. Transmission fluid insufficient. Fill the transmission housing to proper fluid level. Bearings are cracked or worn. Install new bearings. Transmission fluid is contaminated. Change the fluid.

Hard shifts: Corroded or worn gear shift linkage. Install new shift linkage. Worn or unadjusted clutch. Replace or adjust clutch. Worn or damaged gear shift forks. Replace defective shift forks. Gearshift mechanism is damaged. Replace or repair the mechanism.

Lack of transmission oil pressure: Transmission oil insufficient. Fill the transmission housing with oil. Dirty transmission fluid filter (if fitted). Service or change transmission fluid filter. Stuck relief valve. Replace relief valve as required.

External oil leaks: Damaged seals or gaskets. Install new components. Too much fluid in transmission. Excess fluid must be drained.

Massey Ferguson 698T Hydraulic System Troubleshooting

Hydraulics overheating: Improper hydraulic oil type. The proper type of hydraulic oil must be used. Contaminated hydraulic fluid. Change hydraulic fluid. Air in the hydraulic system. Air bleeding. Faulty main relief valve. Install a new relief valve.

Hydraulic oil pressure too low: Hydraulic fluid level low. Checking hydraulic fluid level and add if necessary. Hydraulic fluid filter element is clogged. Service the hydraulic filter or change if required. Leaking hydraulic pipes. Inspect hydraulic system for leaks and repair it. Incorrect setting hydraulic control valve. Use the correct adjustment. Damaged hydraulic pump. Repair or replace hydraulic fluid pump. Defective hydraulic cylinder. Repair or install a new hydraulic cylinder.

Three-point hitch cannot be lifted or lifting is too slow: Hydraulic pump not working. Replace or repair hydraulic oil pump. Main relief valve is damaged. Replace relief valve. Hydraulic spool valve is damaged. Replace or repair the valve. Hydraulic cylinder not working. Repair or replace hydraulic cylinder. Low hydraulic oil level. Check and refill the hydraulic oil. Clogged hydraulic fluid filter element. Replace hydraulic filter element or service if necessary. Excessive hitch loading. The load should be reduced.

Hitch won't drop or drops slowly: Hydraulic cylinder is defective. Install a new hydraulic cylinder or repair it. Hydraulic control valve is set improperly. The control valve must be set correctly. Lift arm shaft is worn. Install a new shaft. The three-point hitch is not adjusted. Adjust the 3-point hitch.

Hitch drop or lift is jerky: Dirty hydraulic oil. The oil must be changed. Hydraulic pump malfunction. Replace or repair hydraulic oil pump. Air in the hydraulic system. Air bleeding. Defective hydraulic control valve. Repair or replace the valve. Defective hydraulic cylinder. Change or repair hydraulic cylinder.

Massey Ferguson 698T Steering Troubleshooting

Excessive free play of steering wheel: Steering column coupling or shaft has maximum wear. Replace defective component. Worn steering pump. Install a new steering pump. Steering linkage assembly is worn or loose. Replace or repair steering linkage. Hydrostatic steering unit has wear or malfunction. Inspect and replace as required.

Hard Steering: Air lock in hydraulic steering system. Bleed the system of air. Steering filter element is clogged. Replace steering filter element. Steering fluid insufficient. Check and refill steering fluid. Hydrostatic steering unit is defective or worn. Check and replace as required. Steering pump not working. Install a new steering pump. Pump flow control valve is stuck or worn. Replace or service control valve. Improperly mounted or worn steering column. Mount the steering column as required or change it. Front tires wear unevenly. Change the tires. Incorrect toe-in. Check toe-in and correct. Steering cylinder is leaking. Change damaged piston rod or worn seal sleeves.

Front wheels wander to left or right: Hydrostatic steering unit has wear or malfunction. Change or repair steering unit if required. Steering cylinder is worn. Change or repair steering cylinder. Not adjusted toe-in. Check and adjust toe-in. Loose or worn steering linkage components. Check and replace as required. Incorrectly adjusted or damaged front wheel bearings. Install new bearings or adjust it correctly. Uneven wear on front tyres. Replace the tyres.

Massey Ferguson 698T Electrical System Troubleshooting

Battery cannot be charged: Loose or corroded electrical wiring connections. Service or tighten cable connections. Battery terminal clamps are defective. Change terminal clamps. Faulty cell in battery. Battery change required. Damaged or loose belt. Belt needs to be adjusted or replaced.

Starter cranks slow: Low battery voltage. Recharge the battery. Battery discharges quickly. Service battery or replace it. Disconnected cables or faulty battery terminals. Check wire connections and change or service terminals.

Starter is not cranking: Battery is low or faulty. Recharge or replace battery. Battery cables are disconnected or incorrectly connected. Check cables and connect as needed. Low battery output voltage. Battery needs to be recharged. Defective starter motor. Starter should be changed.