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Kubota MX6000 Troubleshooting

Kubota MX6000 Engine Troubleshooting

Engine starts up hard or doesn't start: Fuel filter element is dirty. Clean the filter element. There is air in the fuel system. Bleed the system. Fuel injection nozzles are damaged or dirty. Install a new kit of correctly balanced nozzles. Fuel injection pump is defective. Rebuild or replace pump.

Engine stalls while running: Timing of fuel injection pump is incorrect. Adjust according to specifications. Fuel filter element is clogged. Filter maintenance required. Engine is not warmed up to the required temperature. Warm up the engine.

Engine starts and then shuts off: Dirty fuel filter. Service or replace the filter. Fuel injection pump malfunction. Replace or rebuild injection pump. Air filter element clogged. Service or replace the air filter.

Engine overheats: Clogged radiator fins or leaking radiator cap. Clean radiator or change cap. Insufficient coolant. Fill radiator to proper level and check components for faults. Loose or defective fan belt. Belt replacement is recommended. Engine oil level is low. Check and refill engine oil.

Engine power is insufficient: Fuel injection nozzles are clogged or faulty. Install a new kit of correctly balanced nozzles. Restricted fuel lines or hoses. Service fuel lines and hoses. Air filter plugged. Clean or change. Cylinder-head gasket is broken. Install a new gasket.

Engine noises or knocks: Engine is not preheated. Warm up the engine. Engine oil insufficient. Fill up the oil to required level. Incorrect adjustment of fuel injection pump timing. Adjust according to specifications. Pistons are broken or worn. Pistons need to be replaced. Misaligned or faulty connecting rod. Align or change connecting rod.

Engine stalls when idle: Low idle speed set incorrectly. Adjust as required. Improper valve clearance. Need to adjust valve clearance. Defective fuel injection pump. Change pump or rebuild it.

Oil pressure too low: Engine oil level low. Fill crankcase to proper oil level. Defective oil pump. Inspect and change as required. Oil filter clogging. Replace or clean engine oil filter element.

Kubota MX6000 Hydrostatic Transmission Troubleshooting

HST transmission is excessively noisy: Worn or out of adjustment speed control linkage. Repair or adjust linkage. Transmission overloaded. Reduce transmission load. Fluid is contaminated or fluid level is insufficient. Pour fresh fluid or add transmission fluid to proper level. Relief valve malfunction. Replace relief valve as required. Worn or defective parts of the hydrostatic transmission. Change or repair defective parts.

Transmission oil over heats: Transmission overload. Reduce the load is required. Cooling components are plugged or defective. Check all cooling components and change or clean if required. Low oil level. Check transmission oil level and add oil as required. Plugged transmission oil filter. Service or replace the transmission oil filter.

Loss of power: Low oil level. Fill the transmission housing to proper oil level. Relief valve is stuck. Install a new valve. Worn or unadjusted speed control linkage. Repair or adjust linkage.

Transmission fluid leaking: Oil return tube is plugged. Clean or replace the tube. Worn seals or gaskets. Replace worn gaskets or seal. High internal transmission housing pressure. Change defective components.

Kubota MX6000 Hydraulics Troubleshooting

Hydraulic system is too hot: Incorrect hydraulic oil type. Use the correct type of hydraulic oil. Hydraulic fluid contamination. Change hydraulic fluid. Air in the hydraulic system. Air bleeding. Main relief valve is faulty. Relief valve need to be replaced.

Hydraulic oil pressure is low: Hydraulic fluid is insufficient. Fill up the hydraulic fluid. Hydraulic oil filter element is clogged. Change hydraulic filter element or clean if necessary. Leaking hydraulic lines. Inspect the system for leaks and fix it. Incorrect setting hydraulic control valve block. Set correctly. Defective hydraulic pump. Change or repair hydraulic oil pump. Broken hydraulic cylinder. Install a new hydraulic cylinder or repair it.

Hitch not lifting or hitch lifts slowly: Damaged hydraulic pump. Install a new hydraulic oil pump. Main relief valve failure. Replace relief valve. Defective hydraulic spool valve. Repair or change the valve. Hydraulic cylinder malfunction. Install a new hydraulic cylinder or repair it. Hydraulic oil level low. Check and refill the hydraulic oil. Clogged hydraulic fluid filter element. Clean the hydraulic filter or install new filter element. Excessive load on hitch. Reduce loading.

Hitch not lowering or hitch lowers slowly: Hydraulic cylinder is faulty. Repair or replace hydraulic cylinder. Hydraulic control valve block is not set properly. Use the proper setting. Hitch rock shaft is worn. Change the shaft. Three-point hitch has not been adjusted. Adjust three-point hitch as required.

Hitch lifting or lowering is jerky: Hydraulic fluid contamination. Change hydraulic fluid. Hydraulic pump is faulty. Install a new hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Defective hydraulic control valve. Install a new hydraulic valve or repair it. Hydraulic cylinder malfunction. Change or repair hydraulic cylinder.

Kubota MX6000 Steering Troubleshooting

Excessive steering wheel free play: Steering column coupling or shaft is extremely worn out. Change faulty component. Defective hydraulic steering pump. Check the hydraulic steering pump and change if necessary. Loose or worn steering linkage components. Check and replace as required. Hydrostatic steering unit has wear or damage. Check and replace as required.

Hard Steering: Air in the hydraulic steering system. Bleed air. Steering filter is clogged. Clean steering filter element. Not enough steering oil. Check oil level and add steering oil as required. Defective or worn hydrostatic steering unit. Inspect and change as required. Faulty steering pump. Steering pump needs to be replaced or repaired. Steering pump control valve is stuck or faulty. Service or replace flow control valve. Incorrectly fitted or worn steering column. Refit or replace the steering column. Tire pressure uneven. Inflate the tires correctly. Not adjusted toe-in. Check and adjust toe-in. Steering cylinder leakage. Change worn piston seals or damaged piston rod.

Tractor pulls to left or right: Hydrostatic steering unit has damage or wear. Repair or replace the steering unit. Faulty steering cylinder. Change or repair hydraulic steering cylinder. Incorrect toe-in. Adjust toe-in wheels. Steering linkage components are loose or worn. Repair or change steering linkage. Front wheel bearings are worn or incorrectly adjusted. Replace the bearings or adjust it properly. Tire pressure uneven. Inflate the tires correctly.

Kubota MX6000 Electrical Troubleshooting

Battery won’t charge: Electrical wire connections are corroded or loose. Service or tighten cable connections. Defective battery terminal connectors. Terminal connectors should be replaced. Battery failing. Use a new battery. Worn or loose belt. Adjust belt tension or change the belt.

Starter turns slowly: Low battery voltage. Charge the battery. Battery won’t hold charge. Service charging system or install new battery. Corroded battery terminals or disconnected wires. Connect wires properly or change terminals.

Starter motor is not working: Battery is low or faulty. Battery needs to be recharged or replaced. Disconnected or improperly connected wiring harness. Inspect battery wiring harness and connect as required. Battery voltage is low. Charge the battery. Faulty starter motor. Change or repair starter.