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Kubota BX2230 Troubleshooting

The Kubota BX2230 is a 4WD sub-compact utility tractor from BX30 series. This model was manufactured between 2004 and 2006. The Kubota BX2230 powerline components: a 54.8 (0.9L) Kubota D902-E3B 4-cycle 3-cylinder indirect injection water-cooled diesel engine with a max power of 22 hp (16.4 kW), and two-range hydrostatic transmission with infinite forward and reverse gears.

The maximum forward speed - 8.5 mph (13.7 km/h), max reverse speed - 6.2 mph (10 km/h). The open center hydraulic system includes a gear pump with a flow of 5.5 gpm (20.8 lpm). The main relief pressure is 127 bar (1850 psi). The tractor is equipped with a hydrostatic power steering, wet disc brakes, 18x8.50-8 front tires, and 26x12.00-12 rear tires. The wheel base is 55.1" (1390 mm).

The Kubota BX2230 is compatible with the following attachments: 54" or 60" mid-mount 3-blade mower decks with cutting height of 1.0-4.0" (25-102 mm), 49" front-mount snowblower with clearing height of 10.5" (260 mm), 54" front-mount blade with lift height of 7.5" (190 mm), and Kubota LA211 front-end loader with lift capacity to full height of 460 lbs (208 kg).

Engine Troubleshooting
Engine won't start or hard to start
Clogged fuel filter element - Change the filter element
Fuel shut-off valve closed - Open the fuel shut-off valve
There is air in the fuel system - Bleed the system
Dirty or faulty injectors - Inspect fuel injectors and replace if necessary
Fuel injection pump is broken - Change pump or rebuild it
Low engine compression - Inspect cylinder block and change worn parts
Engine shuts off unexpectedly during operation
Engine is not preheated - Warm up to required temperature
Fuel lines leaking air - Tighten clamps, change faulty pipes
Improper fuel injection - Fuel injection settings required
Fuel filter plugging - Service or replace the filter
Dirty or faulty injectors - Inspect fuel injectors and replace if necessary
Diesel starts but suddenly stops
Incorrect setting of fuel injection pump timing - Fuel pump timing settings need to be corrected
Fuel filter plugging - Replace the filter element
Fuel injector nozzles are damaged or dirty - Test injector nozzles and replace as required
Damaged fuel injection pump - Rebuild or install a new injection pump
Dirty air cleaner element - Change or service air cleaner element
Engine stalls at low idle speed
Incorrectly adjusted low idle speed - Correct low idle adjustment
Fuel injection pump failure - Replace or rebuild injection pump
Fuel injector nozzles are dirty - Test injector nozzles and replace as required
The valve clearance is incorrect - Correct valve clearance needs to be set
Engine overheats
Insufficient coolant - Coolant needs to be refilled. Check the components of cooling system
Cooling system parts are failed or system is dirty - Service the cooling system or change faulty parts
Engine oil level low - Fill up the oil to required level
Broken fan belt or improper belt tension - Replace or adjust belt tension properly
Thermostat malfunction - Check and change if necessary
Engine power loss
Faulty or dirty injectors - Test fuel injectors and change if necessary
Incorrect fuel injection pressure - Test fuel injection pressure and adjust it correctly
Air filter element clogging - Replace filter or install new filter element
Oil filter element clogged - Clean or change engine oil filter
Engine overloaded - Reduce load on the engine
The valve clearance is incorrect - Check and adjust as required
Incorrectly adjusted low idle speed - Test and adjust
Dirty fuel hoses or pipes - Clean fuel pipes and hoses
Engine low compression: Intake or exhaust valves are damaged - Install new valves
Engine knocks or noises
Incorrectly set fuel injection pump timing - Adjust the fuel injection pump timing correctly
Damaged or clogged injector nozzles - Check and change nozzles as required
Not enough engine oil - Fill up the engine oil
Coolant temperature is low - Warm up the engine
Worn crankshaft or main bearings - Install new parts
Stuck or worn piston rings - Piston rings need to be replaced
Loose flywheel bolts - Check flywheel bolts and tighten properly
High oil consumption
Oil leaking: Damaged seals or gaskets - Change worn parts according to specifications
Oil viscosity is incorrect - Use correct viscosity oil
Stuck or worn piston rings - Replace piston rings
Worn valve guides and valve stems - Need to replace the valves
Cylinder liners or pistons are scored - Inspect pistons and liners, change as required

Electrical System Troubleshooting
Battery does not charge
Battery bad cell - Battery replacement required
Battery electrical wire harness failure - Inspect wires for defects, change or repair
Corroded or loose terminals and cables - Service or tighten battery terminals and cables
Belt damage or incorrect belt tension adjustment - Adjust belt tension as required or replace belt
Starter turns slowly
Low battery output - Battery needs to be recharged
Battery is not holding charge - Battery needs service or replacement
Battery cable harness damage - Check battery cables for damage, change or repair
Corroded or loose cables and terminals - Tighten or service cables and terminals
Starter is not cranking
Battery voltage is low - Battery is drained, charge it
Discharged or defective battery - Recharge or replace battery
Starter motor is defective - Repair or replace starter
Disconnected or incorrectly connected cables - Inspect battery cables and connect correctly

Hydrostatic Transmission Troubleshooting
Hydrostatic transmission makes excessive noise
Contaminated oil or low oil level - Change the oil or fill to required level
Damaged or not adjusted speed control rod linkage - Adjust or repair rod linkage
Faulty relief valve - Change the valve
Transmission is under excessive load - Reduce loading
Defective or worn components of hydrostatic transmission - Change or repair damaged parts
Transmission oil overheats
Insufficient fluid supply - Fill system with correct transmission fluid level
Plugged transmission fluid filter - Change or clean the transmission fluid filter
Cooling components are damaged or clogged - Inspect all cooling components and replace or repair if necessary
Excessive transmission load - Load needs to be reduced
Loss of power
Not enough fluid in transmission - Fill up the transmission fluid
Low charge pressure - Check charge pressure
Worn or damaged relief valve - Change the valve
Transmission oil leaks
Gaskets or seals are damaged - Seals and gaskets need to be replaced
Internal transmission case pressure is too high - Change or repair damaged parts
Oil return tube is plugged - Check tube and clean if required

Hydraulics Troubleshooting
Hydraulic system is too hot
Hydraulic system pressure is unadjusted - Adjust the pressure as required
Misadjusted or defective main relief valve - Adjust or change relief valve
Dirty hydraulic oil - The oil must be changed
Air in hydraulic system - Check the pump seals, suction line, and fittings
Hydraulic oil pressure is insufficient
Hydraulic fluid level is insufficient - Add fluid to the hydraulic system
Hydraulic oil filter element is dirty - Replace filter element or clean if required
Damaged hydraulic oil pump - Check the pump capacity and replace pump if required
Hydraulic spool valve block is defective or set improper - Set properly or replace
Hydraulic cylinder malfunction - Inspect the hydraulic cylinder parts for damage or wear and replace if required
Hydraulic lines are leaking - Identify leaks in the system and repair it
Hitch cannot be raised or raising is too slowly
Hydraulic oil level is insufficient - Fill the hydraulic system with oil
Cold oil in hydraulic system - Wait for oil to warm up
Hydraulic fluid filter element is dirty - Clean or change hydraulic filter
Hydraulic pump failure - Flow-rate hydraulic pump and replace pump if necessary
Main relief valve incorrect adjustment or failure - Adjust relief valve or change if required
Damaged or incorrect adjusted hydraulic spool valve - Replace or set correctly
Broken hydraulic cylinder - Check cylinder parts for wear or damage and replace if necessary
Damaged or loose suction line - Tighten or change
Three-point hitch dropping is too slow or cannot be dropped
Hydraulic spool valve is faulty or out of adjustment - Adjust properly or change
Hydraulic cylinder malfunction - Inspect cylinder components for damage or wear and change if required
Hitch cross shaft is damaged - Install a new shaft
The hitch has any internal mechanical damage - Replace damaged or worn hitch parts
Jerky lowering or lifting of the hitch
Hydraulic system sucks air - Inspect the suction pipe, fittings, and pump seals
Contaminated hydraulic oil - Change hydraulic oil
Defective hydraulic pump - Check pump capacity and change if necessary
Faulty or incorrect setting hydraulic spool valve - Replace or set correctly
Hydraulic cylinder is defective - Check cylinder parts for wear or damage and replace if necessary

Steering System Troubleshooting
Steering wheel is hard to turn
Defective or incorrectly installed steering column - Reinstall the steering column or change it
Aeration in steering system - Air-bleed steering system
Incorrect toe-in - Check toe-in and correct
Low tire pressure - Inflate the tires
Hydraulic steering pump is defective - Install a new steering pump
Worn or defective hydrostatic steering unit - Inspect and replace as required
Relief valve failure or seizing - Replace or service relief valve
Steering oil insufficient - Check and refill steering oil
Steering system has oil leaks - Tighten the steering hose and pipe joints
Excessive steering wheel free play
Worn steering column shaft or coupling - Replace faulty component
Faulty or worn hydrostatic steering unit - Repair or replace the steering unit
Steering pump stopped working - Steering pump needs to be repaired or replaced
Faulty or worn steering tie-rod ends or linkage - Change damaged component
Front wheels wander to right or left
Improper tire pressure - Check the pressure and inflate tires as required
Toe-in adjustment is incorrect - Adjust toe-in correctly
Steering linkage or tie-rod ends are defective - Change failed component
Defective or worn hydrostatic steering unit - Repair or replace the steering unit
Worn steering cylinder - Repair or change steering cylinder
Incorrectly adjusted or worn front hub bearings - Change or adjust 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