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Kubota L5460 Troubleshooting

Kubota L5460 Engine Troubleshooting

Engine difficult to start or doesn't start: Fuel filter plugged. Replace the filter element. Air in the fuel lines. Bleed the fuel lines. Fuel injection nozzles are damaged. Check injection nozzles and replace if required. Fuel injection pump failure. Rebuild or install a new injection pump.

Engine stops suddenly during operation: Improper fuel injection timing. Set up as recommended. Dirty fuel filter. Replace filter element. Low coolant temperature. Warm up engine as required.

Diesel starts but stalls immediately: Fuel filter plugged. Service or replace the filter. Damaged fuel injection pump. Repair or replace injection pump. Air filter is clogged. Clean or replace element.

Engine overheats: Dirty radiator core or faulty radiator cap. Replace cap or clean radiator. Lack of coolant in cooling system. Top up coolant fluid and check system for leaks. Broken or loose fan belt. If necessary, replace the belt. Engine oil level is insufficient. Fill up the oil to required level.

Diesel engine is losing power: Fuel injection nozzles are faulty or clogged. Service or change injection nozzles. Dirt in the fuel lines or hoses. Clean fuel system hoses and lines. Air cleaner is dirty. Carry out maintenance on air filter. Damaged cylinder-head gasket. Install a new gasket.

Engine knocking sound or abnormal noise: Engine has not warmed up to the recommended temperature. Warm up to required temperature. Engine oil level is insufficient. Check and refill engine oil. Fuel injection pump timing is not adjusted. Set up as recommended. Pistons are scored or worn. Have pistons replaced. Connecting rod failure or misalignment. Need to replace or align the connecting rod.

Engine shuts off while idling: Improperly adjusted low idle speed. Test and adjust. The valve clearance is incorrect. Adjust to proper valve clearance. Fuel injection pump failure. Rebuild or change fuel pump.

Oil pressure too low: Oil level is insufficient. Add oil to the engine crankcase. Defective oil pump. Install a new pump. Oil filter element is dirty. Service or replace engine oil filter.

Kubota L5460 Hydrostatic Transmission Troubleshooting

HST transmission makes noise: Worn or unadjusted speed control linkage. Adjust or repair linkage. Transmission overloaded. Load needs to be reduced. Dirty transmission fluid or insufficient fluid level. Pour fresh fluid or add transmission fluid to proper level. Relief valve malfunction. Replace valve as required. Transmission parts are worm or defective. After disassembly and inspection, replace defective components.

Transmission fluid overheating: Excessive transmission load. Reduce transmission load. Cooling components are defective or plugged. Check all cooling components and clean or replace if required. Lack of transmission fluid. Add fluid to the transmission housing. Plugged transmission oil filter. Clean or replace the transmission filter.

Lack of power: Lack of transmission fluid. Need to add transmission fluid. Defective relief valve. Install a new valve. Speed control linkage is defective or unadjusted. Repair or adjust linkage.

Transmission oil leaks: Oil drain pipe is plugged. Check pipe and service if necessary. Seals or gaskets are worn. Gaskets or seal need to be replaced. High internal transmission housing pressure. Check transmission parts for damage or wear and replace if required.

Kubota L5460 Hydraulics Troubleshooting

Hydraulic system is too hot: Improper hydraulic oil type. The proper type of hydraulic oil must be used. Hydraulic fluid is contaminated. Fill up with new hydraulic fluid. Air trapped in hydraulic system. Bleed air from system. Faulty main relief valve. Replace relief valve.

Hydraulic oil pressure is insufficient: Hydraulic fluid level low. Add fluid as required. Dirty hydraulic fluid filter element. Service the hydraulic filter or change if required. Leaking hydraulic pipes. Check the hydraulic system and fix leaks. Incorrect adjusted hydraulic control valve. Adjust correctly. Faulty hydraulic pump. Repair or replace hydraulic oil pump. Defective hydraulic cylinder. Replace or repair hydraulic cylinder.

Hitch not lifting or hitch lifts slowly: Hydraulic pump failure. Repair or replace hydraulic fluid pump. Main relief valve is faulty. Change relief valve. Damaged hydraulic spool valve. Repair or change hydraulic valve. Faulty hydraulic cylinder. Repair or replace hydraulic cylinder. Hydraulic oil level low. Check and refill the hydraulic oil. Dirty hydraulic oil filter element. Install a new hydraulic filter element. Hitch is under excessive load. The load should be reduced.

Hitch not lowering or hitch lowers slowly: Hydraulic cylinder is defective. Replace or repair hydraulic cylinder. Incorrect adjusted hydraulic control valve. Adjust correctly. Damaged lift arm shaft. Replace the shaft. Misadjusted hitch. Adjustment is required.

Hitch lift or drop is jerky: Contaminated hydraulic oil. Change hydraulic oil. Hydraulic pump malfunction. Repair or replace hydraulic oil pump. Air in hydraulic lines. Bleed hydraulic lines. Faulty hydraulic control valve. Install a new valve or repair it. Hydraulic cylinder is faulty. Repair or replace hydraulic cylinder.

Kubota L5460 Steering Troubleshooting

Excessive steering wheel play: Steering column coupling or shaft is extremely worn out. Replace defective component. Faulty steering pump. Replace or repair steering pump. Steering linkage components are loose or worn. Check and change as required. Hydrostatic steering unit has malfunction or wear. Repair or replace the steering unit.

Hard Steering: Air in the hydraulic steering system. Bleed air from system. Steering filter element is clogged. Change steering filter element. Steering fluid level is insufficient. Add oil to steering system. Hydrostatic steering unit has malfunction or wear. Repair or replace the steering unit. Steering pump malfunction. Repair or replace steering pump. Stuck or worn pump flow control valve. Clean or install new control valve. Incorrectly assembled or damaged steering column. Reassemble the steering column correctly or change it. Front tyres wear unevenly. Change the tyres. Improper toe-in. Adjust toe-in properly. Leaking steering cylinder. Change worn piston seals or damaged piston rod.

Tractor is pulling to left or right: Hydrostatic steering unit has malfunction or wear. Repair or change the steering unit. Damaged steering cylinder. Repair or change steering cylinder. Not adjusted toe-in. Adjust toe-in wheels. Worn or loose steering linkage joints. Check and replace as required. Front wheel bearings are damaged or incorrectly adjusted. Adjust properly or replace bearings. Uneven wear on front tires. Replace the tires.

Kubota L5460 Electrical System Troubleshooting

Battery is not charging: Corroded or loose electrical wire connections. Clean or tighten connections. Defective battery terminal clamps. Terminal clamps should be changed. Battery failing. Install a new battery. Belt is worn or loose. Belt needs to be adjusted or changed.

Starter turning slow: Battery voltage is low. Charge the battery. Battery won’t hold charge. Service battery or change it. Disconnected battery cables or bad terminals. Connect cables properly or replace terminals.

Starter will not work: Battery is discharged or defective. Battery needs to be recharged or replaced. Wiring is improperly connected or disconnected. Check wiring and connect properly. Low battery voltage. Battery needs to be recharged. Starter motor is defective. Starter should be replaced.