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Kubota L2850 Troubleshooting

Kubota L2850 Engine Troubleshooting

Engine starts hard or will not start: Fuel filter plugging. Filter maintenance required. Air in fuel system. Bleed fuel system. Fuel injection nozzles are dirty or defective. Check and replace nozzles if required. Fuel injection pump is not operating properly. Replace injection pump or repair it.

Engine stalls during operation: Incorrect adjustment of fuel injection pump timing. Adjust fuel injection pump as required. Fuel filter plugged. Install new filter element. Engine has not warmed up to the recommended temperature. Warm up the engine.

Diesel starts and stalls immediately: Dirty fuel filter. Change filter element. Faulty fuel injection pump. Rebuild or install a new injection pump. Plugged air filter. Service or replace the air filter.

Engine overheating: Clogged radiator core or leaking radiator cap. Clean radiator or install new cap. Lack of engine coolant. Top up coolant fluid and check system for leaks. Loose or defective fan belt. Install new fan belt. Engine oil level is low. Checking oil level and add if necessary.

Poor engine power: Clogged or defective injection nozzles. Check and replace nozzles if required. Fuel hoses or lines are clogged. Service fuel lines and hoses. Air filter is dirty. Clean or change. Worn cylinder head gasket. Change cylinder head gasket.

Abnormal engine noise or knocking: Engine not warmed up. Engine is not warmed up to the required temperature. Lack of engine oil. Need to add engine oil. Incorrect adjustment of fuel injection pump timing. Check the fuel injection pump timing adjustment. Broken or worn pistons. Pistons replacement required. Misaligned or defective connecting rod. Need to align or replace the connecting rod.

Engine stops at low idle speed: Incorrectly adjusted low idle speed. Correct the settings. Excessive valve clearance. Check and adjust. Fuel injection pump is defective. Replace injection pump or repair it.

Insufficient oil pressure: Insufficient engine oil. Check oil level and add oil as required. Oil pump failure. Repair or replace. Oil filter element is dirty. Change or clean engine oil filter element.

Kubota L2850 Transmission Troubleshooting

Transmission is making noise: Worn gears or incorrect backlash. Replace defective gears or set backlash properly. Shift forks are bent or worn out. Change defective shift forks. Shaft splines are damaged or worn. Replace the shaft. Insufficient transmission oil. Fill the transmission housing to proper oil level. Bearings are broken or worn. Faulty bearings should be replaced. Transmission fluid is dirty. Fill up with fresh transmission fluid.

Hard shifts: Stuck or worn gear shift linkage. Shift linkage need to be replaced. Unadjusted or worn clutch. Adjust clutch or replace if required. Shift forks are bent or worn out. Replace the shift forks. Worn out parts of the gearshift mechanism. Replace worn parts.

Low transmission fluid pressure: Lack of transmission oil supply. Fill up the transmission oil. Transmission fluid filter element clogging (if equipped). Clean or change transmission fluid filter. Relief valve failure. Change the valve.

Transmission oil leakage: Damaged seals or gaskets. Seals and gaskets replacement required. High transmission oil level. Correct the oil level.

Kubota L2850 Hydraulic System Troubleshooting

Excessive hydraulic system heat: Hydraulic oil type is improper. Fill up with the proper type of oil. Hydraulic oil is dirty. Hydraulic oil change required. There is air in the hydraulic system. Bleed hydraulic system. Main relief valve is damaged. Relief valve need to be replaced.

Low hydraulic oil pressure: Insufficient hydraulic oil. Check and refill the hydraulic oil. Clogged hydraulic oil filter element. Service the hydraulic filter or change if required. Leaking hydraulic pipes. Inspect the system for leaks and fix it. Hydraulic control valve is set improperly. The control valve must be set correctly. Damaged hydraulic pump. Repair or replace hydraulic fluid pump. Hydraulic cylinder failure. Replace or repair hydraulic cylinder.

Hitch not lifting or hitch lifts slowly: Faulty hydraulic pump. Change or repair hydraulic fluid pump. Main relief valve is damaged. Replace relief valve. Defective hydraulic control valve. Repair or replace hydraulic valve. Hydraulic cylinder is defective. Repair or replace hydraulic cylinder. Low hydraulic oil level. Check and refill the hydraulic oil. Clogged hydraulic oil filter element. Clean the hydraulic filter element or replace if necessary. Excessive load on hitch. Reduce hitch load.

Hitch fails to drop or drops slowly: Hydraulic cylinder not working. Repair or change hydraulic cylinder. Hydraulic control valve block is set improperly. Set properly. Damaged lift arm shaft. Change the shaft. Three-point hitch is out of adjustment. The three-point hitch must be adjusted.

Jerky lifting or lowering of three-point hitch: Hydraulic fluid contamination. Change hydraulic fluid. Hydraulic pump is faulty. Repair or replace hydraulic fluid pump. There is air in the hydraulic system. Bleed hydraulic system. Hydraulic spool valve block is faulty. Install a new hydraulic valve or repair it. Hydraulic cylinder failure. Repair or replace hydraulic cylinder.

Kubota L2850 Steering System Troubleshooting

Excessive free play of steering wheel: Steering column shaft or coupling is worn out. Change faulty component. Faulty steering pump. Repair or replace steering pump. Worn or loose steering linkage joints. Check and replace as required. Worn or damaged steering control valve. Change or repair steering control valve if required. Steering box components are damaged. Defective parts of power steering box must be replaced.

Steering is hard: Air trapped inside steering system. Need to bleed air. Steering filter clogging. Service steering filter. Lack of steering oil. Fill the steering system with oil. Steering control valve has damage or wear. Inspect and replace as required. Steering box parts are worn out. Defective power steering box components must be replaced. Steering pump is worn. Install a new steering pump. Steering pump control valve is stuck or worn. Flush or change flow control valve. Damaged or incorrectly assembled steering column. Replace steering column or assemble correctly. Tire pressure is uneven. Adjust the tire pressure. Improper toe-in. Check toe-in and correct.

Front wheels wander to left or right: Steering box parts have excessive wear. Change defective steering box parts. Worn or defective steering control valve. Inspect and change as required. Incorrect toe-in. Check and adjust toe-in. Steering linkage parts are loose or worn. Repair or change steering linkage. Front wheel bearings are damaged or incorrectly adjusted. Change or adjust bearings correctly. Tyre pressure is uneven. Adjust the tyre pressure.

Kubota L2850 Electrical System Troubleshooting

Battery is not charging: Loose or corroded wire connections. Tighten or clean electrical wiring connections. Defective battery terminal connectors. Change terminal connectors. Battery faulty cell. Battery change required. Damaged or loose belt. Belt needs to be adjusted or replaced.

Starter turning slow: Battery power is low. Recharge the battery. Battery drains quickly. Service charging system or change battery. Disconnected wires or corroded battery terminals. Connect wires properly or change terminals.

Starter will not work: Battery is low or faulty. Replace or charge as required. Battery wires are disconnected or incorrectly connected. Check wires and connect correctly. Battery capacity is low. Charge the battery. Starter motor failing. Repair or change starter.