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Kubota B3300SU Troubleshooting

Kubota B3300SU Diesel Engine Troubleshooting

Engine hard to start or doesn't start: Clogged fuel filter. Change the filter element. Air in fuel system. Bleed fuel system. Clogged or burnt injection nozzle. Replace injection nozzles. Damaged fuel injection pump. Replace or rebuild injection pump.

Engine stalls while running: Fuel injection pump timing is not adjusted. Set up as recommended. Fuel filter element is clogged. Replace filter element. Low coolant temperature. Warm up the engine.

Engine starts and stops suddenly: Clogged fuel filter. Replace filter element. Fuel injection pump is damaged. Install a new pump or rebuild. Clogged air cleaner. Air filter maintenance required.

Engine is overheated: Defective radiator cap or clogged radiator fins. Clean radiator or change cap. Insufficient coolant fluid. Fill radiator to proper level and check components for faults. Loose or defective fan belt. If necessary, replace the belt. Lack of engine oil. Fill up the engine oil.

Diesel engine loses power: Fuel injection nozzles are clogged or faulty. Clean or replace injection nozzles. Fuel hoses or lines are clogged. Clean fuel lines and hoses. Plugged air filter. Clean or replace element. Cylinder head gasket is defective. Gasket should be replaced.

Engine noise or knocking: Low coolant temperature. Engine is not warmed up to the required temperature. Lack of engine oil. Fill up the oil to required level. Fuel injection pump timing is not adjusted. Set the fuel pump timing correctly. Piston wear or scoring. Replace the pistons. Connecting rod is worn or misaligned. Need to align or replace the connecting rod.

Engine stops while idling: Incorrectly adjusted low idle speed. Normalize low idle speed. Valve clearance is out of adjustment. Correct valve clearance needs to be set. Fuel injection pump damage. Repair or replace injection pump.

Insufficient oil pressure: Not enough oil in the engine. Checking oil level and add if necessary. Worn oil pump. Install a new pump. Clogged oil filter element. Change or service engine oil filter.

Kubota B3300SU Hydrostatic Transmission Troubleshooting

HST transmission noise: Speed control pedal linkage is bent or not adjusted. Adjust or change linkage. Transmission overloaded. The load should be reduced. Transmission oil is contaminated or oil level is insufficient. Add oil to proper level or pour fresh transmission oil. Relief valve failure. Change the valve. Worn or defective parts of the hydrostatic transmission. After disassembling and inspection, change defective components.

Transmission oil overheating: Transmission overloaded. Reduce the load is required. Clogged or damaged cooling components. Check all cooling components and repair or change if required. Lack of transmission fluid. Checking transmission fluid level and add if necessary. Transmission oil filter is dirty. Clean or replace the transmission filter.

Lack of power: Lack of transmission oil supply. Check transmission oil level and add oil as required. Relief valve is stuck. Replace valve as required. Speed control pedal linkage is damaged or out of adjustment. Adjust or install new linkage.

Transmission fluid leaking: Clogged transmission fluid return pipe. Clean or change return pipe. Seals or gaskets are broken. Seals and gaskets replacement required. Transmission case internal pressure is too high. Replace worn components.

Kubota B3300SU Hydraulic System Troubleshooting

Hydraulic system overheated: Hydraulic fluid type is improper. The proper type of fluid must be used. Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Air trapped in hydraulic system. Bleed air from system. Defective main relief valve. Install a new relief valve.

Hydraulic fluid pressure too low: Hydraulic fluid is insufficient. Fill up the hydraulic fluid. Clogged hydraulic fluid filter. Change the hydraulic filter element or service if required. Leaking hydraulic pipes. Inspect hydraulic system for leaks and repair it. Hydraulic control valve is not set properly. Adjust properly. Hydraulic pump failure. Change or repair hydraulic oil pump. Hydraulic cylinder is defective. Repair or replace hydraulic cylinder.

Hitch does not raise or raises very slowly: Hydraulic pump is faulty. Replace or repair hydraulic fluid pump. Defective main relief valve. Relief valve replacement required. Hydraulic spool valve block is faulty. Replace or repair the valve. Broken hydraulic cylinder. Replace or repair hydraulic cylinder. Low hydraulic fluid level. Fill up the hydraulic fluid. Clogged hydraulic fluid filter. Service the hydraulic filter or change if required. Excessive load on hitch. Reduce hitch load.

Hitch won't drop or drops slowly: Hydraulic cylinder malfunction. Repair or change hydraulic cylinder. Incorrect adjusted hydraulic spool valve. Adjust the spool valve correctly. Lift arm shaft is damaged. Change the shaft. The hitch has not been adjusted. Need to make adjustments.

Jerky lifting or lowering of three-point hitch: Hydraulic oil is contaminated. Fill up with fresh hydraulic oil. Hydraulic pump not working. Install a new hydraulic oil pump. Air in the hydraulic system. Air bleeding. Hydraulic spool valve block is faulty. Repair or replace hydraulic valve. Hydraulic cylinder is faulty. Repair or install a new hydraulic cylinder.

Kubota B3300SU Steering System Troubleshooting

Steering wheel has too much free-play: Steering column coupling or shaft is extremely worn out. Replace faulty part. Steering pump is faulty. Repair or replace steering pump. Worn or loose steering linkage assembly. Replace or repair steering linkage. Steering control valve is damaged or worn. Repair or change the steering control valve. Steering box parts are faulty. Replace defective components of power steering box.

Steering is stiff: Air lock in the steering system. Bleed air from system. Clogged steering filter element. Service steering filter. Low steering oil level. Fill up the steering oil. Faulty or worn steering control valve. Replace or repair steering control valve as required. Steering box parts are damaged. Repair power steering box. Steering pump failure. Steering pump needs to be replaced or repaired. Stuck or worn pump flow control valve. Install a new flow control valve or clean it. Improperly assembled or defective steering column. Reassemble or change the steering column. Uneven wear on front tyres. Replace the tyres. Not adjusted toe-in. Check toe-in and correct.

Front wheels wander to left or right: Steering box parts are worn out. Change defective steering box parts. Steering control valve has malfunction or wear. Replace or repair steering valve as required. Improper toe-in. Adjust toe-in wheels. Steering linkage joints are worn or loose. Check and change as required. Incorrectly adjusted or damaged front wheel bearings. Replace the bearings or adjust it properly. Uneven wear on front tyres. Replace the tyres.

Kubota B3300SU Electrical System Troubleshooting

Battery cannot be charged: Corroded or loose cable connections. Clean or tighten wiring connections. Electrical terminal connectors are defective. Terminal connectors need to be changed. Faulty cell in battery. Battery replacement required. Belt is defective or loose. Belt needs to be adjusted or changed.

Starter motor turns slow: Low battery power. Low battery charging, charge as required. Battery runs out quickly. Service charging system or change battery. Corroded battery terminals or disconnected wires. Check cable connections and change or clean terminals.

Starter will not crank: Battery is low or faulty. Need to charge or replace the battery. Disconnected or incorrectly connected wires. Inspect battery wires and connect correctly. Low battery power. Battery needs to be recharged. Starter motor is damaged. Repair or change starter.