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Kubota BX2680 Troubleshooting

Kubota BX2680 Engine Troubleshooting

Engine starts up hard or doesn't start: Fuel filter element clogging. Clean the filter or install new filter element. Air trapped in fuel system. Bleed air. Clogged or defective injection nozzles. Clean or change injection nozzles. Defective fuel injection pump. Replace or rebuild injection pump.

Engine stops unexpectedly during operation: Improper setting of fuel injection pump timing. Use the correct fuel injection pump timing adjustment. Fuel filter plugged. Filter maintenance required. Engine is not warmed up to the required temperature. Normalize the temperature by warming up the engine.

Diesel starts and suddenly stops: Fuel filter element is clogged. Replace filter element. Fuel injection pump is broken. Rebuild or replace pump. Air filter is clogged. Change air filter element.

Engine overheats: Radiator core is dirty or radiator cap is damaged. Change cap or clean radiator. Low engine coolant. Fill the cooling system and check components for leaks or other faults. Fan belt slipping or worn. Belt change is required. Engine oil insufficient. Fill up the engine oil.

Diesel power loss: Fuel injection nozzles are damaged. Check and replace nozzles if required. Fuel hoses or lines clogging. Clean fuel system lines and hoses. Air filter clogged. Clean or change. Cylinder head gasket is defective. Gasket should be replaced.

Abnormal engine noise or knocking: Engine not warmed up. Warm up engine as required. Insufficient engine oil. Fill up the engine oil. Timing of fuel injection pump is incorrect. Adjust the pump as required. Scored or worn pistons. Install new pistons. Connecting rod misalignment or failure. Connecting rod needs to be aligned or changed.

Engine shuts off while idling: Wrong adjustment of low idle speed. Need to adjust idle speed. Improper valve clearance. Have it adjusted. Fuel injection pump is faulty. Repair or change injection pump.

Insufficient oil pressure: Low oil level. Checking oil level and add if necessary. Oil pump malfunction. Repair or replace. Oil filter clogging. Change or service engine oil filter.

Kubota BX2680 Hydrostatic Transmission Troubleshooting

Excessive hydrostatic transmission noise: Defective or not adjusted speed control pedal linkage. Adjust or replace linkage. Transmission overloaded. Reduce the load is required. Low transmission oil level or contaminated oil. Add oil to proper level or pour fresh transmission oil. Defective relief valve. Replace relief valve as required. Worn or defective transmission components. After disassembling and inspection, change defective components.

Transmission overheats: Excessive loading. The load should be reduced. Defective or plugged cooling components. Check all cooling components and change or repair if required. Transmission fluid insufficient. Add fluid to the transmission housing. Dirty transmission fluid filter element. Service or change transmission fluid filter.

Low power: Low fluid level. Add fluid to the transmission housing. Relief valve malfunction. Change relief valve. Worn or out of adjustment speed control linkage. Adjust or install new linkage.

Transmission fluid leaking: Oil drain pipe is plugged. Check pipe and service if necessary. Seals or gaskets are worn. Seals and gaskets replacement required. High internal transmission housing pressure. Change defective parts.

Kubota BX2680 Hydraulics Troubleshooting

Hydraulic system is overheated: Hydraulic oil type is wrong. Correct type of oil must be used. Hydraulic oil is dirty. Hydraulic oil change required. There is air in the hydraulic system. Bleed hydraulic system. Main relief valve is faulty. Change relief valve.

Hydraulic fluid pressure too low: Hydraulic oil is insufficient. Need to add oil. Dirty hydraulic oil filter element. Hydraulic filter maintenance required. Hydraulic piping is leaking. Identify leaks in the system and repair it. Hydraulic control valve is out of adjustment. Need to make adjustment. Hydraulic pump not working. Install a new hydraulic oil pump. Damaged hydraulic cylinder. Repair or replace hydraulic cylinder.

Hitch not lifting or hitch lifts slowly: Defective hydraulic pump. Repair or replace hydraulic fluid pump. Main relief valve malfunction. Relief valve must be changed. Hydraulic spool valve is damaged. Repair or change hydraulic valve. Hydraulic cylinder is broken. Install a new hydraulic cylinder or repair it. Hydraulic fluid is insufficient. Fill up the hydraulic fluid. Clogged hydraulic fluid filter element. Service the hydraulic filter or change if required. Excessive load on hitch. The load should be reduced.

3-point hitch won't lower or lowers slowly: Hydraulic cylinder is defective. Repair or change hydraulic cylinder. Hydraulic control valve is set improperly. The control valve must be set correctly. Lift arm shaft is damaged. Replace the shaft. Hitch is out of adjustment. Adjust the 3-point hitch.

Hitch lowering or lifting is jerky: Dirty hydraulic oil. The oil must be changed. Faulty hydraulic pump. Replace or repair hydraulic oil pump. Air in the hydraulic system. Air bleeding. Faulty hydraulic spool valve. Install a new valve or repair it. Hydraulic cylinder is broken. Install a new hydraulic cylinder or repair it.

Kubota BX2680 Steering System Troubleshooting

Excessive steering wheel free play: Steering column shaft or coupling is worn out. Replace faulty part. Hydraulic steering pump is defective. Install a new hydraulic steering pump. Steering linkage parts are loose or worn. Change or repair steering linkage. Hydrostatic steering unit is damaged or worn. Inspect and replace as required.

Stiff steering: Air trapped inside steering system. Bleed air. Dirty steering filter element. Change steering filter element. Low steering oil level. Fill up the steering oil. Hydrostatic steering unit has malfunction or wear. Check and replace as required. Steering pump malfunction. Replace or repair steering pump. Pump flow control valve is damaged or stuck. Install a new flow control valve or clean it. Incorrectly installed or worn steering column. Install the steering column correctly or replace it. Uneven tire pressure. Inflate the tires properly. Incorrect toe-in. Check and adjust toe-in. Steering cylinder leaks. Change worn piston seals or damaged piston rod.

Front wheels wander to left or right: Hydrostatic steering unit has damage or wear. Replace or repair steering unit as required. Worn steering cylinder. Replace or repair hydraulic steering cylinder. Not adjusted toe-in. Adjust toe-in properly. Steering linkage components are loose or worn. Repair or change steering linkage. Damaged or improperly adjusted or worn front wheel bearings. Install new bearings or adjust it correctly. Front tyres are worn unevenly. Install new tyres.

Kubota BX2680 Electrical Troubleshooting

Battery will not charge: Wiring connections are loose or corroded. Service or tighten connections. Faulty electrical terminal connectors. Change terminal connectors. Bad cell in battery. Battery change required. Belt is loose or defective. Belt needs to be adjusted or replaced.

Starter turns slow: Low battery voltage. Low battery charging, charge as required. Battery is not holding charge. Battery needs to be serviced or replaced. Bad battery terminals or disconnected wiring. Check battery wires and service or replace terminals.

Starter doesn't crank: Battery is low or faulty. Battery needs to be recharged or replaced. Battery wires are disconnected or incorrectly connected. Check wires and connect correctly. Battery voltage is low. Battery is drained, recharge it. Starter motor failing. Change or repair starter.