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Kubota L3410 Troubleshooting

The Kubota L3410 is a 4WD compact utility tractor from Grand L10 series. This model was manufactured between 1998 and 2002. The Kubota L3410 tractor is powered by 100.5 cu.in (1.6 L) Kubota D1703-A 4-cycle vertical 3-cylinder indirect injection diesel engine with a rated power of 33.6 hp (25.1 kW).

The Kubota L3410 is fitted with 3 types of transmission. Type 1: 8x8 FST Sync Shuttle fully synchronized transmission (L3410DT). Type 2: 8x8 (16x16 w/creeper) Glide shift transmission (L3410GST). Type 3: Three-range hydrostatic transmission (L3410HST).

The maximum travel speed (forward and reverse): 16.4 mph (26.4 km/h) / 15 mph (24.1 km/h). The open center hydraulic system includes a gear pump with a flow of 7 gpm (26.4 lpm). The Kubota L3410 is equipped with 7.00x16 (L3410DT / L3410GST) or 7.20x16 (L3410HST) front tyres and 12.4x24 rear tyres. The wheel base is 65.7" (1670 mm).

Compatible attachments for the tractor: a 72" mid-mount 3-blade mower deck with cutting height of 1.5-3.5" (37-89 mm), 60" front-mount snowblower with hydraulic lift, 72" front blade, Kubota LA481 front end loader with lift capacity to full height of 1058 lbs (479 kg), and Kubota BL4690 backhoe with max digging depth of 90.2" (2290 mm).

Engine Troubleshooting
Engine doesn't start or difficult to start
Fuel filter clogging - Install new filter element
The fuel shut-off valve is closed - Open fuel shut-off valve
Fuel-line is leaking air - Retighten clamps, replace defective pipes
Clogged or damaged injectors - Clean or replace fuel injectors
Fuel injection pump is not working correctly - Rebuild or install a new injection pump
Engine has low compression - Check and replace worn parts
Engine stalls during operation
Engine not warmed up - Normalize the temperature by warming up the engine
Air in fuel pipes - Bleed fuel pipes
Irregular fuel injection - Adjust fuel injection timing
Fuel filter is dirty - Change the filter element
Dirty or damaged injectors - Test fuel injectors and change if necessary
Engine starts and stalls immediately
Incorrectly set fuel injection pump timing - Adjust the fuel injection pump timing correctly
Fuel filter is dirty - Service or replace the filter
Fuel injector nozzles fault - Change injector nozzles
Fuel injection pump failure - Rebuild or change fuel pump
Dirty air cleaner - Change or service air cleaner element
Engine shuts off while idling
Incorrectly set low idle speed - Adjustment required
Fuel injection pump is faulty - Replacement or repair required
Clogged or defective injector nozzles - Test injector nozzles and replace as required
Valve out of adjustment - Adjust valve clearance
Engine overheats
Not enough coolant - Fill the cooling system. Check and repair damage to the cooling system if required
Cooling system is dirty or cooling parts are failed - Flush cooling system or replace faulty parts
Low engine oil level - Fill the crankcase with engine oil
Broken fan belt or unadjusted belt tension - Adjust belt tension properly or change it
Thermostat failure - Check thermostat, replace if necessary
Engine lacks power
Clogged or damaged injectors - Service or change fuel injectors
Uneven fuel injection pressure - Repair or replace injection pump
Air filter is dirty - Service or change air filter
Oil filter is clogged - Replace or clean engine oil filter element
Engine is overloaded - Reduce the load or operate the tractor in lower gears
Improper valve clearance - Need to adjust valve clearance
Low idle speed setting is not correct - Adjust the low idle speed
Clogged fuel hoses or pipes - Clean fuel pipes and hoses
Engine low compression: Valves are broken or leaking - Valve replacement required
Engine knocking or noise
Incorrect setting of fuel injection pump timing - Repair or replace fuel injection pump
Clogged or defective injector nozzles - Change or clean injector nozzles
Not enough engine oil - Checking oil level and add if necessary
Engine not warmed up - Warm up to required temperature
Main bearings or crankshaft wear - Change defective components as required
Piston rings are defective or broken - Install new piston rings
Loose flywheel bolts - Inspect flywheel bolts and tighten properly
Diesel engine using too much oil
Oil leaks: Damaged gaskets or seals - New components need to be installed
Oil viscosity is incorrect - Fill up with the proper oil viscosity
Worn or broken piston rings - Piston rings need to be replaced
Worn valve stems and valve guides - Install new valves
Damaged cylinder liners or pistons - Inspect liners and pistons, fit new parts as necessary

Electrical System Troubleshooting
Battery will not charge
Faulty cell in battery - Change the battery
Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair
Battery cables and terminals are corroded or loose - Tighten or service terminals and cables
Worn belt or improperly adjusted belt tension - Adjust belt tension correctly or change belt
Starter motor cranks slow
Low battery output - Battery is drained, recharge it
Battery drains quickly - Service or change the battery
Damaged battery cable harness - Check electrical cables for damage, repair or replace
Battery cables and terminals are loose or corroded - Service or tighten battery cables and terminals
Starter is not cranking
Low battery output voltage - Battery is drained, charge it
Drained or faulty battery - Need to charge or replace the battery
Starter motor is defective - Starter needs to be replaced
Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly

Transmission Troubleshooting
Difficult to shift gears
Worn or misadjusted clutch - Clutch needs to be adjusted or changed
Gear shift linkage is damaged or loose - Change defective shift linkage
Bent or worn shift forks - Change defective shift forks
Worn gear shift mechanism - Replace worn components
Insufficient transmission fluid pressure
Insufficient oil supply - Add transmission oil as required
Transmission oil filter is plugged (if fitted) - Change or service the transmission oil filter
Relief valve failure - Replace the valve
Transmission makes excessive noise
Damaged or worn bearings - Change faulty bearings
Fluid level is low - Fill the transmission housing with fluid
Contaminated transmission fluid - Change transmission fluid
Incorrect backlash or gears are defective - Replace gears or adjust backlash properly
Worn or damaged shift forks - Change defective shift forks
Transmission fluid leakage
Worn gaskets or seals - Install new seal or gaskets
Cracked transmission case - Install a new transmission case

Hydrostatic Transmission Troubleshooting
HST transmission noises
Contaminated oil or low oil level - Pour fresh oil or add oil to proper level
Defective or out of adjustment speed control rod linkage - Adjust or change rod linkage
Relief valve sticking - Change relief valve
Transmission overload - Reduce loading
Defective or worn components of hydrostatic transmission - Change or repair damaged parts
Transmission oil overheated
Fluid level is low - Fill system with correct transmission fluid level
Transmission oil filter element is dirty - Change or service the transmission oil filter
Plugged or defective cooling components - Inspect all cooling components and service or change if necessary
Excessive transmission load - Reduce the load is required
Power is insufficient
Oil level is insufficient - Check transmission oil level and add oil as required
Low charge pressure - Test charge pressure
Relief valve is damaged or worn - Change relief valve
Transmission fluid leaking
Broken gaskets or seals - Install new seal or gaskets
Transmission housing internal pressure is excessive - Inspect transmission components for wear or damage and replace if necessary
Plugged oil return tube - Clean or replace return tube

Hydraulics Troubleshooting
Hydraulic system overheats
Hydraulic system pressure is not corrected - The pressure must be adjusted correctly
Main relief valve is defective or unadjusted - Adjust the valve or replace if necessary
Hydraulic oil is dirty - Hydraulic oil change required
Hydraulic system sucks air - Inspect the pump seals, suction pipe, and fittings
Insufficient hydraulic oil pressure
Lack of hydraulic fluid - Add fluid to the hydraulic system
Hydraulic fluid filter is dirty - Install a new hydraulic filter element
Hydraulic pump not working - Test pump performance and replace pump if necessary
Hydraulic spool valve block is defective or set improper - Replace or adjust properly
Hydraulic cylinder is broken - Inspect cylinder components for wear or damage and change if required
Leakage in hydraulic pipes - Detect leaks in hydraulic system and repair it
Three-point hitch lifting is too slow or cannot be lifted
Not enough hydraulic oil in the system - Check oil level and add hydraulic oil as required
Cold fluid in hydraulic system - Wait for fluid to warm up
Dirty hydraulic oil filter - Clean or change hydraulic filter
Hydraulic pump is faulty - Test pump performance and replace pump if necessary
Main relief valve malfunction or incorrect adjustment - Adjust or change relief valve
Damaged or incorrect adjusted hydraulic spool valve - Set correctly or replace
Hydraulic cylinder malfunction - Inspect the hydraulic cylinder parts for damage or wear and replace if required
Suction line is damaged or disconnected - Connect or replace
Hitch drops too slowly or can't drop
Hydraulic spool valve block is not set properly or defective - Adjust properly or change
Hydraulic cylinder is not working - Inspect cylinder parts for wear or damage and replace if required
Hitch cross shaft is damaged - Replace the shaft
The hitch has any internal mechanical damage - Replace defective or worn hitch components
Hitch jerks when lift or lower
Air trapped in the hydraulic system - Inspect the suction pipe, fittings, and pump seals
Contaminated hydraulic fluid - Change hydraulic fluid
Damaged hydraulic oil pump - Test the pump flow rate and install new pump if required
Damaged or incorrect adjusted hydraulic control valve - Set correctly or replace
Broken hydraulic cylinder - Inspect cylinder parts for wear or damage and replace if required

Steering System Troubleshooting
Stiff steering
Steering column is damaged or improperly mounted - Replace the steering column or mount it properly
Air in steering system - Air-bleed steering system
Toe-in adjustment is incorrect - Check and adjust toe-in
Tires are deflated - Need to inflate tires
Faulty steering pump - Check the steering pump and replace if necessary
Worn or damaged hydrostatic steering unit - Change or repair steering unit if required
Relief valve is stuck or faulty - Clean or change the relief valve
Steering oil insufficient - Check and refill steering oil
Steering system oil leakage - Tighten the steering pipe and hose joints
Excessive steering wheel free play
Steering column shaft or coupling is worn out - Change faulty part
Faulty or worn hydrostatic steering unit - Change or repair steering unit if required
Steering pump is faulty - Steering pump needs to be repaired or replaced
Steering tie-rod ends or linkage are defective - Change failed part
Tractor is pulling to left or right
Tires are not correctly inflated - Inflate tires as necessary
Improper toe-in adjustment - Adjust toe-in properly
Faulty or worn steering linkage or tie-rod ends - Replace damaged part
Defective or worn hydrostatic steering unit - Inspect and replace as required
Damaged steering cylinder - Repair or replace hydraulic steering cylinder
Front hub bearings are improperly adjusted or defective - Change or adjust the bearings properly



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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