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Kubota B6200 Troubleshooting
The
Kubota B6200 compact utility tractor was manufactured from 1983 to 1992. This
model was designed in four versions: B6200E (2WD Gear), B6200D (4WD Gear),
B6200HST-E (2WD Hydro), and B6200HST-D (4WD Hydro). The Kubota B6200 is powered
by Kubota D850 4-cycle vertical 3-cylinder liquid-cooled diesel engine with a
rated power of 15 hp (11.2 kW).
The Kubota B6200 is fitted with 2 transmission options: 6x2 mechanical
transmission with a manual gear shifting, and hydrostatic transmission
with a high-low shift levels. The maximum travel speed
(forward/reverse): 8 mph (12.8 km/h) and 5.7 mph (9.2 km/h). The open
center hydraulic system used a gear pump with rated fluid flow of 4.0
(15.1) gpm. The hydraulic system pressure is 113 bar (1640 psi). The 2WD
models are equipped with 4.50x10 (AG) front tyres and 7.00x16 (AG) rear
tyres.
The 6.00x12 (AG) or 20.5x8.00-10 (Turf) front tyres and 8.00x16 (AG) or
29x12.00-15 (Turf) rear tyres fit 4WD tractors. The wheel base is 57.9"
(1470 mm). The tractor is compatible with a 60" mid-mount 3-blade Kubota
RC60-72 mower deck with cutting height of 1.5-4.0 in (38-102 mm), 48"
rear-mount Kubota B3538 finish mower, 51" front-mount dual-stage Kubota
B2551 snowblower with hydraulic lift, and Kubota B1640 front-end loader
with lift capacity to full height of 510 lbs (231 kg).
| Engine Troubleshooting |
| Engine hard starting or not starting |
| Clogged fuel filter element - Service the filter |
| The fuel shut-off valve is closed - Open fuel shut-off valve |
| Air in fuel lines - Bleed fuel lines |
| Faulty or dirty injectors - Service or change fuel injectors |
| Fuel injection pump malfunction - Repair or install a new fuel pump |
| Poor cylinder compression - Inspect cylinder block and replace worn components |
| Engine stops running unexpectedly |
| Engine is not fully warmed up - Engine is not warmed up to the required temperature |
| Air trapped in fuel system - Bleed air |
| Fuel injection failed - Use correct settings |
| Fuel filter plugging - Service the filter |
| Dirty or damaged injectors - Inspect fuel injectors and replace if necessary |
| Engine starts but immediately stops |
| Incorrect setting of fuel injection pump timing - Fuel injection pump timing adjustment needs to be corrected |
| Fuel filter clogging - Clean the filter element |
| Fuel injector nozzles are damaged - Service or replace nozzles if required |
| Fuel injection pump damage - Rebuild or replace pump |
| Dirty air cleaner - Replace or service air cleaner element |
| Engine stalls when idling |
| Wrong adjustment of low idle speed - Correct low idle adjustment |
| Faulty fuel injection pump - Replace or repair injection pump |
| Fuel injector nozzles are damaged or dirty - Replace fuel injector nozzles |
| Valve out of adjustment - Correct valve clearance needs to be set |
| Lack of engine coolant - Fill the cooling system. Check and repair damage to the cooling system if required |
| Cooling system components are worn or system is clogged - Change faulty components or flush cooling system |
| Engine oil insufficient - Need to add engine oil |
| Improper fan belt tension or damaged belt - Adjust correctly or replace the belt |
| Thermostat malfunction - Thermostat needs to be replaced |
| Engine power is insufficient |
| Fuel injectors are clogged or faulty - Test fuel injectors and change if necessary |
| Fuel injection pressure is incorrect - Adjust to correct pressure |
| Air filter is clogged - Replace filter or install new filter element |
| Clogged oil filter element - Change or service engine oil filter |
| Engine is under excessive load - Reduce the load or use a lower gear |
| Valve clearance is out of adjustment - Need to adjust valve clearance |
| Low idle speed setting is not correct - Test and adjust |
| Dirt in the hoses or pipes - Clean fuel hoses and pipes |
| Engine compression is insufficient: Leaking or faulty valves - Have valves replaced |
| Abnormal engine knocking or noise |
| Fuel injection pump timing is incorrect - Correct injection timing |
| Fuel injector nozzles are faulty - Service or replace injector nozzles |
| Engine oil insufficient - Checking oil level and add if necessary |
| Engine is not fully warmed up - Warm up to required temperature |
| Crankshaft or main bearings failure - Repair or replace defective parts |
| Piston rings are damaged or broken - Piston rings replacement required |
| Loose flywheel screws - Inspect the flywheel screws and tighten securely |
| Oil leaks: Worn seals or gaskets - Defective components must be replaced |
| Wrong oil viscosity - Use oil of proper viscosity |
| Piston rings are defective or worn - Have piston rings replaced |
| Valve stems or guides are damaged - Install new valves |
| Cylinder liners or pistons are scored - Check pistons and liners, change as required |
| Electrical System Troubleshooting |
| Battery is not charging |
| Battery failing - Battery change required |
| Damaged battery cable harness - Check electrical cables for damage, repair or replace |
| Corroded or loose battery terminals and cables - Service or tighten battery cables and terminals |
| Belt is defective or belt tension is improperly adjusted Replace belt or correctly adjust belt tension |
| Battery power is low - Battery is drained, charge it |
| Battery runs out quickly - Battery needs to be serviced or replaced |
| Battery electrical wire harness failure - Inspect wires for defects, change or repair |
| Corroded or loose cables and terminals - Tighten or clean cables and terminals |
| Battery capacity is low - Battery is drained, charge it |
| Drained or faulty battery - Change or recharge battery |
| Starter motor failure - Starter needs to be replaced |
| Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly |
| Transmission Troubleshooting |
| Hard shifting |
| Worn or misadjusted clutch - Clutch adjustment or replacement required |
| Gear shift linkage is stuck or damaged - Change or repair shift linkage |
| Bent or worn shift forks - Shift forks need to be changed |
| Gear shifting mechanism is worn - Change worn components |
| Insufficient transmission oil pressure |
| Low transmission oil level - Checking transmission oil level and add if necessary |
| Transmission fluid filter clogging (if fitted) - Change or service the transmission fluid filter |
| Relief valve failure - Install a new relief valve |
| Bearings are worn or cracked - Replace faulty bearings |
| Low transmission oil level - Add transmission oil as required |
| Transmission fluid contamination - Change transmission fluid |
| Improper backlash or damaged gears - Replace gears or set backlash correctly |
| Bent or worn shift forks - Change the shift forks |
| Gaskets or seals are broken - Install new components |
| Transmission housing is cracked - Replace housing or transmission assembly |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission noise |
| Contaminated oil or low oil level - Pour fresh oil or add oil to proper level |
| Speed control rod linkage is worn or not adjusted - Replace rod linkage or adjust correctly |
| Relief valve failure - Replace the valve |
| Transmission is under excessive load - Load needs to be reduced |
| Worn or damaged transmission components - Replace or repair worn components |
| Transmission oil overheats |
| Insufficient fluid supply - Fill up the transmission fluid |
| Transmission oil filter clogging - Change or clean the transmission oil filter |
| Plugged or defective cooling components - Check all cooling components and change or repair if required |
| Transmission is under excessive load - Reduce the load is required |
| Oil level is insufficient - Fill up the transmission oil |
| Insufficient charge pressure - Check charge pressure |
| Relief valve is defective or worn - Replace relief valve |
| Gaskets or seals are broken - Change defective seal or gaskets |
| Internal transmission case pressure is too high - Inspect transmission parts for malfunction and change if required |
| Oil return pipe is clogged - Check pipe and clean if necessary |
| Hydraulics Troubleshooting |
| Excessive hydraulic system heat |
| Improper hydraulic pressure adjustments - Adjust it correctly |
| Main relief valve failure or incorrect setting - Adjust or change relief valve |
| Contaminated hydraulic fluid - Change hydraulic fluid |
| Air leaks in hydraulic system - Check the suction pipe, fittings, and pump seals |
| Hydraulic oil pressure too low |
| Not enough hydraulic oil in the system - Add oil to the hydraulic system |
| Hydraulic oil filter element clogging - Replace hydraulic filter element or service if necessary |
| Hydraulic pump is defective - Check pump flow and install new pump if necessary |
| Defective or not adjusted hydraulic spool valve - Adjust correctly or change |
| Hydraulic cylinder is broken - Check cylinder components for damage or wear and change if necessary |
| Hydraulic piping leaks - Find leaks in hydraulic system and repair it |
| Hitch cannot be raised or raising is too slowly |
| Hydraulic oil level is low - Fill up the hydraulic oil |
| Hydraulic fluid is too cold - Allow fluid to warm |
| Dirty hydraulic oil filter - Clean the hydraulic filter or install new filter element |
| Damaged hydraulic oil pump - Test the pump flow rate and change pump if required |
| Unadjusted or defective main relief valve - Adjust or change relief valve |
| Defective or incorrect setting hydraulic spool valve block - Set correctly or replace |
| Hydraulic cylinder is not working - Check cylinder components for damage or wear and change if necessary |
| Suction line is damaged or disconnected - Connect or replace |
| 3-point hitch won't drop or drops slowly |
| Defective or not adjusted hydraulic control valve - Change or set correctly |
| Hydraulic cylinder is broken - Check cylinder parts for wear or damage and replace if necessary |
| Worn lift arm shaft - Install a new shaft |
| Mechanical parts of the hitch are damaged - Replace defective or worn hitch parts |
| Hitch jerks when lift or lower |
| Hydraulic system sucks air - Inspect the pump seals, suction pipe, and fittings |
| Hydraulic oil is dirty - Hydraulic oil change required |
| Damaged hydraulic oil pump - Check hydraulic pump flow and replace pump if necessary |
| Damaged or incorrect adjusted hydraulic control valve - Set correctly or replace |
| Hydraulic cylinder malfunction - Check cylinder components for wear or damage and change if necessary |
| Steering System Troubleshooting |
| Hard Steering |
| Steering knuckle or steering column is stuck - Inspect steering column and knuckle, replace worn parts |
| Steering gearbox components are worn - Replace defective components of steering gearbox |
| Faulty drag link or tie rod - Replace or repair |
| Insufficient lubrication in steering box - Need to lubricate the gearbox |
| Not adjusted toe-in alignment - Check and adjust toe-in |
| Tires are not correctly inflated - Inflate tires as necessary |
| Excessive steering wheel free play |
| Steering column bearing or shaft is worn - Change faulty parts |
| Steering linkage assembly is worn or loose - Repair or replace steering linkage |
| Worn steering gearbox bearings - Replace the bearings |
| Front wheel hub bearings or steering knuckles are worn - Change hub bearings or knuckles |
| Damaged or worn steering tie-rod ends - Change faulty part |
| Tractor pulls to right or left |
| Worn or loose steering linkage assembly - Repair or replace steering linkage |
| Defective steering knuckle bushing - Replace knuckle bushing |
| Uneven tire pressure - Inflate the tires properly |
| Toe-in adjustment is incorrect - Adjust toe-in correctly |
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| Farm Tractors Technical Specifications |
