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Kubota L3301 Troubleshooting

The Kubota L3301 compact utility tractor was manufactured from 2014 to 2021. This model was designed in two versions: L3301F (2WD) and L3301DT (4WD). The Kubota L3301 driveline consists of a 111.4 cu.in (1.83 L) Kubota D1803-CR-E4 four-cycle vertical three-cylinder direct injection liquid-cooled diesel engine and Synchro-Shuttle transmission with 8 forward and 8 reverse gears.

The engine has a cylinder bore of 3.43" (87 mm), piston stroke of 4.03" (102.4 mm), rated power of 33 hp (24.6 kW), and maximum torque of 101.7 Nm (75.2 lb-ft) at 1500 rpm. The maximum forward speed - 13.2 mph (21.2 kph), max. reverse speed - 13.1 mph (21.1 kph). The open center hydraulic system used a gear pump with fluid flow rate of 6.3 gpm (23.9 lpm). The main relief pressure is 162 bar (2350 psi).

The four-wheel drive models are equipped with 5.00x15 front tyres and 11.2x24 rear tyres. The 7.2x16 or 27x8.50-15 front tyres and 11.2x24 or 15x19.5 rear tyres fit two-wheel drive tractors. The wheelbase is 63.3" (1610 mm). Compatible attachments for the tractor: Kubota LA525 front-end loader with lift capacity to full height of 1131 lbs (513 kg), and Kubota BH77 backhoe with 2-ft flat digging depth of 89.8" (2280 mm).

Engine Troubleshooting
Diesel will not start or hard to start
Clogged fuel filter element - Change filter element
The fuel shut-off valve is closed - Open fuel shut-off valve
Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system
Fuel injectors are defective or dirty - Service or change fuel injectors
Fuel injection pump is damaged - Install a new fuel pump or repair
Poor engine compression - Inspect cylinder block and change worn parts
Engine stops running while driving
Engine is not warmed up to the required temperature - Warm up to required temperature
Fuel lines leaking air - Tighten clamps, change faulty pipes
Irregular fuel injection - Adjust fuel injection timing
Fuel filter plugging - Clean the filter element
Faulty or dirty injectors - Change fuel injectors
Engine stops after starting
Fuel injection pump timing is incorrect - Check and correct adjustments
Fuel filter clogging - Clean or replace the filter
Fuel injector nozzles are dirty - Test injector nozzles and replace as required
Fuel injection pump is not operating properly - Repair or replace injection pump
Air cleaner is dirty - Service or change air cleaner
Engine stops while idling
Incorrect low idle speed adjustment - Correct low idle settings
Fuel injection pump is not operating properly - Change pump or rebuild it
Fuel injector nozzles are defective or dirty - Test injector nozzles and replace as required
Valve clearance is not correct - Adjustment procedure required
Engine overheated
Lack of coolant in cooling system - Fill the radiator to the required level. Check for coolant leaks
Cooling system parts are failed or system is clogged - Replace faulty parts or flush the cooling system
Engine oil level is low - Add oil to the engine crankcase
Fan belt tension is unadjusted or belt is worn - Adjust correctly or change the belt
Defective thermostat - Check thermostat, replace if necessary
Engine power is insufficient
Faulty or dirty injectors - Check fuel injectors and replace if required
Fuel injection pressure is wrong - Check the fuel injection pressure and adjust if necessary
Clogged air filter element - Air filter maintenance required
Oil filter is clogged - Replace or clean engine oil filter element
Engine is under excessive load - Reduce load on the engine
Excessive valve clearance - Adjust to proper valve clearance
Too low idle RPM - Need to adjust idle speed
Clogged fuel pipes or hoses - Clean fuel system hoses and pipes
Engine compression is low: Inlet or outlet valves are defective - Replace the valves
Abnormal engine noise or knocking
Timing of fuel injection pump is wrong - Correct injection timing
Fuel injector nozzles are dirty or defective - Install new set of properly balanced nozzles
Engine oil insufficient - Fill up the engine oil
Coolant temperature is low - Warm up to required temperature
Crankshaft or main bearings are worn out - Worn parts replacement required
Piston rings are worn or broken - Piston rings replacement required
Loose flywheel screws - Inspect the flywheel screws and tighten securely
Engine consuming too much oil
External oil leaks: Gaskets or seals are excessively worn - Replace defective parts
Wrong oil viscosity - Use oil of proper viscosity
Damaged or seized piston rings - Install new piston rings
Damaged valve guides or valve stems - Change the valves
Scuffed pistons or cylinder liners - Check liners and pistons, install new components as required

Electrical System Troubleshooting
Battery will not charge
Worn-out battery - Battery change required
Battery wiring harness damage - Inspect battery wiring for damage, replace or repair
Corroded or loose battery cables and terminals - Tighten or service cables and terminals
Belt damage or incorrect belt tension adjustment - Change belt or adjust belt tension properly
Starter turns slow
Battery voltage is low - Battery is drained, recharge it
Battery discharges quickly - Battery needs to be serviced or replaced
Bad battery cable harness - Inspect cables for malfunctions, repair or change
Loose or corroded terminals and cables - Clean or tighten terminals and cables
Starter doesn't crank
Battery power is low - Charge the battery
Drained or faulty battery - Battery needs to be recharged or replaced
Starter motor is faulty - Repair or install a new starter
Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly

Transmission Troubleshooting
Hard shifting
Clutch is unadjusted or worn - Adjust correctly or replace
Gear shift linkage is stuck or worn - Change defective shift linkage
Shift forks are damaged or worn - Install new shift forks
Gearshift mechanism failure - Change or repair failed components
Transmission oil pressure is insufficient
Low transmission fluid level - Fill the transmission housing with fluid
Dirty transmission oil filter (if fitted) - Replace or clean transmission oil filter
Relief valve failure - Replace relief valve
Transmission is making noise
Damaged or worn bearings - Change faulty bearings
Insufficient fluid supply - Fill up the transmission fluid
Contaminated transmission oil - Transmission oil must be changed
Damaged gears or improper backlash - Change damaged gears or adjust backlash properly
Worn or damaged shift forks - Change the shift forks
Transmission fluid leaking
Seals or gaskets are damaged - Install new components
Transmission case is cracked - Replace case or transmission assembly

Hydraulics Troubleshooting
Hydraulic system is too hot
Incorrect hydraulic system pressure setting - Change the pressure settings
Main relief valve is defective or unadjusted - Replace or set up the relief valve
Hydraulic oil is contaminated - Fill up with fresh hydraulic oil
Air enters in hydraulic system - Check the suction pipe, fittings, and pump seals
Low hydraulic fluid pressure
Lack of hydraulic fluid - Add fluid to the hydraulic system
Hydraulic fluid filter element is dirty - Replace filter element or clean if required
Hydraulic pump not working - Check pump flow and install new pump if necessary
Hydraulic control valve block is not set properly or defective - Change or set correctly
Defective hydraulic cylinder - Inspect cylinder components for wear or damage and change if required
Hydraulic piping leaks - Find leaks in hydraulic system and repair it
3-point hitch won't raise or raises slowly
Hydraulic fluid level is low - Add fluid to the hydraulic system
Cold hydraulic fluid - Warm up the fluid
Hydraulic fluid filter is dirty - Change hydraulic filter element or clean if necessary
Damaged hydraulic oil pump - Check pump capacity and change if necessary
Main relief valve is damaged or adjusted improperly - Adjust the valve or replace if necessary
Hydraulic control valve is faulty or out of adjustment - Set correctly or replace
Defective hydraulic cylinder - Check the hydraulic cylinder parts for damage or wear and replace if necessary
Damaged or disconnected suction pipe - Connect or replace
3-point hitch drops slowly or won't drop
Defective or incorrect setting hydraulic spool valve block - Adjust properly or change
Hydraulic cylinder failure - Inspect cylinder components for wear or damage and change if required
Worn hitch rock shaft - Replace the shaft
Damaged mechanical components of the hitch - Replace worn or defective hitch parts
Hitch raises or lowers not smoothly
Air enters in hydraulic system - Check the suction pipe, fittings, and pump seals
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid
Hydraulic pump is faulty - Check pump flow and change pump if necessary
Hydraulic control valve block is not set properly or defective - Replace or adjust correctly
Hydraulic cylinder is faulty - Inspect cylinder parts for wear or damage and replace if required

Steering System Troubleshooting
Steering wheel is very heavy to turn
Steering column is broken or improperly installed - Steering column must be installed properly or replaced
Air trapped in the steering system - Air-bleed steering system
Improper toe-in - Check and adjust toe-in
Incorrect tire pressure - Inflate the tires correctly
Steering pump not working - Replace or repair steering pump
Worn or defective steering valve - Inspect and replace as required
Damaged power steering box components - Change defective steering box parts
Not enough steering fluid - Fill up steering fluid to required level
Steering system oil leakage - Retighten steering line and hose connections
Excessive steering wheel play
Worn steering column coupling or shaft - Replace faulty component
Worn or defective steering valve - Change or repair steering valve if required
Worn steering box components - Replace defective components of power steering box
Faulty steering pump - Steering pump needs to be replaced or repaired
Worn or faulty steering linkage or tie-rod ends - Replace damaged component
Front wheels wander to left or right
Deflated front tyres - Inflate tyres as needed
Toe-in adjustment is incorrect - Adjust toe-in wheels properly
Steering tie-rod ends or linkage are defective - Replace failed part
Worn steering box parts - Replace defective parts of power steering box
Worn or damaged steering valve - Inspect and replace as required
Worn or incorrectly adjusted or worn front hub bearings - Replace or adjust the bearings correctly



Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294