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Kubota L3300 Troubleshooting
The
Kubota L3300 is a Grand L series compact utility tractor. This model was
manufactured from 1994 to 1999. The Kubota L3300 tractor is powered by Kubota
D1703-A 4-cycle vertical 3-cylinder indirect injection water-cooled diesel
engine. A 100.5 cu.in (1.65L) engine has a cylinder bore of 3.40" (87 mm),
piston stroke of 3.60" (92.4 mm), and rated power of 35.1 hp (26.2 kW).
The Kubota L3300 is fitted with two transmission options: FST Sync
Shuttle fully synchronized transmission with 8 forward and 8 reverse
gears, or Glide Shift creeper transmission with 16 forward and 16
reverse gears. The maximum forward speed - 16.3 mph (26.2 kph), maximum
reverse speed - 15 mph (24.1 kph). The open center hydraulic system used
a gear pump with a flow rate of 7 gpm (26.5 lpm). The hydraulic pressure
is 175 bar (2490 psi). The 2-wheel drive models are equipped with
5.00x15 front tyres and 12.4x24 rear tyres. The 7.20x16 front tyres and
12.4x24 rear tyres fit 4-wheel drive tractors.
The wheelbase is 65.9" (1675 mm) for models with 2WD and 65.7" (1670 mm)
for models with 4WD. The Kubota L3300 is compatible with the following
attachments: a 72" mid-mount 3-blade mower deck with cutting height of
1.5-4.0" (38-102 mm), 60" front-mount snowblower with hydraulic lift
system, 72" front-mount blade, Kubota LA480 front-end loader with lift
capacity to full height of 1058 lbs (480 kg), and Kubota BL4690 backhoe
with maximum digging depth of 90.2" (2290 mm).
| Engine Troubleshooting |
| Engine doesn't start or starts hard |
| Clogged fuel filter element - Clean the filter or install new filter element |
| Closed fuel cock - Open fuel on-off cock to inject fuel |
| Air in fuel lines - Bleed fuel lines |
| Dirty or faulty injectors - Inspect fuel injectors and replace if necessary |
| Faulty fuel injection pump - Rebuild or replace pump |
| Low compression - Check cylinder block and replace defective parts |
| Engine stops during operation |
| Low coolant temperature - Warm up the engine |
| Air in fuel lines - Bleed fuel lines |
| Uneven fuel injections - Repair or adjustment |
| Fuel filter is clogged - Replace the filter element |
| Faulty or dirty injectors - Change fuel injectors |
| Diesel starts but suddenly stops |
| Fuel injection pump timing is incorrect - Fuel injection pump timing adjustment needs to be corrected |
| Clogged fuel filter element - Change filter element |
| Fuel injector nozzles are faulty - Check and change nozzles as required |
| Damaged fuel injection pump - Change or repair the pump |
| Air cleaner element is clogged - Service or replace the air cleaner |
| Engine stops while idling |
| Incorrect low idle speed adjustment - Correct low idle settings |
| Fuel injection pump damage - Install a new fuel pump or repair |
| Fuel injector nozzles are faulty - Service or replace injector nozzles |
| Valve out of adjustment - Adjustment procedure required |
| Lack of coolant in cooling system - Top up coolant fluid. Repair any leaks if necessary |
| Cooling system is dirty or cooling components are damaged - Flush cooling system or replace faulty parts |
| Not enough engine oil - Fill up the oil to required level |
| Fan belt is broken or belt tension is unadjusted - Adjust belt tension correctly or replace it |
| Thermostat is defective - Check and change if necessary |
| Clogged fuel injectors - Clean or replace fuel injectors |
| Improper fuel injection pressure - Adjust to proper pressure |
| Air filter element is clogged - Air filter maintenance required |
| Clogged oil filter - Change or clean engine oil filter element |
| Engine is under excessive load - Change to lower gear or reduce load |
| Improper valve clearance - Check and adjust as required |
| Improperly adjusted low idle speed - Need to adjust idle speed |
| Dirt in the hoses or pipes - Fuel hoses and pipes must be clean |
| Engine losing compression: Leaking or faulty valves - Valve replacement required |
| Incorrectly set fuel injection pump timing - Adjust injection timing |
| Fuel injector nozzles are damaged or dirty - Test injector nozzles and replace as required |
| Insufficient engine oil - Check and refill engine oil |
| Engine is not fully warmed up - Warm up the engine as required |
| Crankshaft or main bearings failure - Worn parts replacement required |
| Piston rings are worn or broken - Replace piston rings |
| The flywheel to crankshaft bolts are loose - Tighten bolts as required |
| Diesel engine consuming too much oil |
| Oil leakage: Gaskets or seals can be faulty - Replace defective parts |
| Wrong oil viscosity - Use oil of proper viscosity |
| Worn or stuck piston rings - Piston rings need to be replaced |
| Worn valve guides and valve stems - Change the valves |
| Pistons or cylinder liners are scuffed - Inspect liners and pistons, change as necessary |
| Electrical System Troubleshooting |
| Battery is not charging |
| Battery bad cell - Change the battery |
| Battery electrical wire harness damage - Check battery wires for damage, replace or change |
| Loose or corroded cables and terminals - Service or tighten battery terminals and cables |
| Belt damage or incorrect belt tension adjustment - Adjust belt tension as required or change belt |
| Low battery capacity - Battery needs to be recharged |
| Battery discharges quickly - Service battery or replace it |
| Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair |
| Corroded or loose battery terminals and cables - Tighten or service terminals and cables |
| Battery power is low - Battery is drained, recharge it |
| Drained or faulty battery - Need to charge or replace the battery |
| Starter motor is defective - Repair or change starter |
| Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly |
| Transmission Troubleshooting |
| Gears are hard to shift |
| Clutch is not adjusted or faulty - Clutch needs to be replaced or adjusted |
| Gear shift linkage is stuck or damaged - Replace or repair the shift linkage |
| Damaged or worn shift forks - Install new shift forks |
| Gearshift mechanism failure - Change or repair failed components |
| Insufficient transmission oil pressure |
| Low transmission fluid level - Fill the transmission housing with fluid |
| Transmission oil filter clogging (if fitted) - Replace or service transmission oil filter |
| Relief valve is faulty - Change relief valve |
| Transmission makes excessive noise |
| Bearings are worn or damaged - Bearings replacement required |
| Lack of transmission fluid supply - Fill the transmission housing with fluid |
| Contaminated transmission oil - Transmission oil must be changed |
| Defective gears or incorrect backlash - Replace gears or set backlash correctly |
| Worn or damaged shift forks - Replace defective shift forks |
| Transmission fluid leaking |
| Broken gaskets or seals - Install new seal or gaskets |
| Cracked transmission housing - Housing needs to be replaced |
| Hydraulics Troubleshooting |
| Hydraulic system overheats |
| Hydraulic system pressure is not corrected - The pressure must be adjusted correctly |
| Main relief valve is defective or unadjusted - Set up or change the relief valve |
| Hydraulic fluid is dirty - Hydraulic fluid change required |
| Hydraulic system sucks air - Inspect the suction line, pump seals, and fittings |
| Hydraulic oil pressure too low |
| Hydraulic fluid level is low - Add fluid to the hydraulic system |
| Dirty hydraulic oil filter - Hydraulic filter maintenance required |
| Hydraulic pump is defective - Flow-rate pump and change pump if necessary |
| Hydraulic spool valve block is faulty or out of adjustment - Change or set correctly |
| Hydraulic cylinder is defective - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Leakage in hydraulic lines - Detect leaks in hydraulic system and repair it |
| 3-point hitch won't raise or raises slowly |
| Lack of hydraulic oil - Fill the hydraulic system with oil |
| Hydraulic oil is too cold - Allow oil to warm |
| Hydraulic fluid filter clogging - Replace hydraulic filter element or service if necessary |
| Hydraulic pump is defective - Check the pump capacity and replace pump if required |
| Main relief valve is defective or unadjusted - Set up or change the relief valve |
| Defective or incorrect setting hydraulic control valve block - Replace or adjust properly |
| Hydraulic cylinder failure - Inspect cylinder components for wear or damage and change if required |
| Suction pipe is damaged or loose - Repair or change |
| Hitch does not lower or lowers very slowly |
| Faulty or incorrect setting hydraulic control valve - Replace or adjust properly |
| Broken hydraulic cylinder - Inspect cylinder components for wear or damage and change if required |
| Hitch rock shaft is damaged - Change the shaft |
| The hitch has mechanical faults - Change worn or defective hitch parts |
| 3-point hitch lift or lower is jerky |
| Air trapped in the hydraulic system - Check the pump seals, suction pipe, and fittings |
| Hydraulic fluid contamination - Change hydraulic fluid |
| Hydraulic pump is defective - Flow-rate hydraulic pump and replace pump if necessary |
| Hydraulic spool valve is faulty or out of adjustment - Adjust properly or replace |
| Hydraulic cylinder is faulty - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Steering System Troubleshooting |
| Stiff steering |
| Steering column is damaged or improperly mounted - Replace the steering column or mount it properly |
| Air leaks in steering system - Bleed air |
| Not adjusted toe-in - Check toe-in and correct |
| Tires are not properly inflated - Inflate tires as required |
| Steering pump failure - Install a new hydraulic steering pump |
| Defective or worn hydrostatic steering unit - Change or repair steering unit if required |
| Relief valve failure or seizing - Service or replace the relief valve |
| Steering oil insufficient - Check and refill steering oil |
| Oil leaks in the steering system - Tighten the steering hose and pipe joints |
| Excessive free play of steering wheel |
| Steering column shaft or coupling has maximum wear - Replace faulty part |
| Hydrostatic steering unit is defective or worn - Repair or change the steering unit |
| Damaged hydraulic steering pump - Install a new hydraulic steering pump |
| Steering tie-rod ends or linkage are defective - Change failed component |
| Tractor pulls to left or right |
| Tire pressure is low - Tires need to be inflated |
| Incorrect toe-in - Check and adjust toe-in |
| Worn or faulty steering tie-rod ends or linkage - Replace failed part |
| Faulty or worn hydrostatic steering unit - Inspect and change as required |
| Faulty steering cylinder - Replace or repair steering cylinder |
| Front hub bearings are incorrectly adjusted or worn - Adjust correctly or install new bearings |
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| Farm Tractors Technical Specifications |
