________________________________________________________________________________________
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 |
| 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 |
| 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 |
| 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 |
