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Kubota B8200HST Troubleshooting
The
Kubota B8200HST compact utility tractor was manufactured between 1983 and 1990.
This model was designed in two versions: B8200HST-E (2WD) and B8200HST-D (4WD).
The Kubota B8200HST driveline includes a 56.6 cu.in (0.93L) Kubota D950-A-DT
vertical 3-cylinder indirect injection naturally aspirated liquid-cooled diesel
engine and 3-range hydrostatic transmission with infinite forward and reverse
gears.
The engine has a cylinder bore of 2.97" (75 mm), piston stroke of 2.76"
(70 mm), maximum power of 21.5 hp (15.9 kW), and 55.6 Nm (41.2 lb-ft) of
peak torque at 1800 rpm. The maximum forward speed - 11.7 mph (18.9
km/h), max reverse speed - 9.4 mph (15.1 km/h). The open center
hydraulic system used a gear pump with a flow of 6.5 gal/min (24.6
l/min). The main relief pressure is 118 bar (1715 psi).
The 2-wheel drive models are equipped with 4.00x12 front tyres and
8.30x24 rear tyres. The 6.50x10 (AG) or 24x8.50-12 (Turf) front tyres
and 12.4x16 (AG) or 13.6x16 (Turf) rear tyres fit 4-wheel drive
tractors. The wheel base is 60.4" (1535 mm). The Kubota B8200HST is
compatible with the following attachments: a 60" mid-mount 3-blade mower
deck with cutting height of 1.5-4.0" (38-102 mm), 51" front-mount
two-stage snowblower with hydraulic lift system,
Kubota BF300 front-end
loader with lift capacity to full height of 705 lbs (320 kg), and Kubota
BK4520 backhoe with maximum digging depth of 78" (1980 mm).
| Engine Troubleshooting |
| Diesel won't start or hard to start |
| Fuel filter is clogged - Clean or change the filter |
| Closed fuel cock - Open fuel on-off cock to inject fuel |
| Air in fuel lines - Bleed fuel lines |
| Dirty or faulty injectors - Clean or replace fuel injectors |
| Fuel injection pump damage - Repair or install a new fuel pump |
| Bad cylinder compression - Check cylinder block and replace defective parts |
| Diesel shuts off during operation |
| Coolant temperature is low - Warm up the engine |
| Fuel-line is leaking air - Retighten clamps, replace defective pipes |
| Fuel injection failed - Use correct settings |
| Fuel filter clogging - Change filter element |
| Clogged fuel injectors - Test fuel injectors and change if necessary |
| Diesel starts but then stalls |
| Timing of fuel injection pump is not adjusted - Fuel injection pump timing adjustment needs to be corrected |
| Fuel filter is dirty - Replace the filter element |
| Fuel injector nozzles are dirty or defective - Change or clean injector nozzles |
| Fuel injection pump is not working correctly - Replacement or repair required |
| Clogged air cleaner element - Change or service air cleaner element |
| Engine stops at low idle speed |
| Low idle speed setting is not correct - Adjust as required |
| Fuel injection pump malfunctioning - Repair or replace injection pump |
| Clogged or damaged injector nozzles - Change or clean injector nozzles |
| The valve clearance is not adjusted - Adjust to proper valve clearance |
| Lack of coolant in cooling system - Fill the cooling system. Check the components of cooling system |
| Cooling system parts are failed or system is clogged - Replace faulty parts or service cooling system |
| Engine oil level low - Need to add engine oil |
| Fan belt tension is improper or belt is damaged - Adjust belt tension correctly or replace it |
| Defective thermostat - Replace the thermostat |
| Clogged or damaged injectors - Service or change fuel injectors |
| Fuel injection pressure is incorrect - Repair or replace injection pump |
| Dirty air filter - Service or change air filter |
| Oil filter element clogging - Service or change engine oil filter element |
| Engine is under excessive load - Load reducing is recommended |
| Valve clearance is wrong - Check and adjust |
| Low idle speed set incorrectly - Adjust low idle speed |
| Dirty fuel hoses or pipes - Service fuel hoses and pipes |
| Loss of compression: Inlet or outlet valves are defective - Install new valves |
| Fuel injection pump timing is incorrect - Check and correct adjustments |
| Fuel injector nozzles are faulty - Service or replace injector nozzles |
| Lack of engine oil - Add oil to the engine crankcase |
| Coolant temperature is low - Warm up engine as required |
| Worn crankshaft or main bearings - Change defective components as required |
| Broken or worn piston rings - Piston rings replacement required |
| Loose flywheel screws - Check the flywheel screws and tighten as required |
| Excessive engine oil consumption |
| External oil leaks: Worn gaskets or seals - Worn parts need to be replaced |
| Crankcase oil too light - Fill up with the correct oil viscosity |
| Stuck or defective piston rings - Change piston rings |
| Valve guides and stems are worn - Valves replacement required |
| Cylinder liners or pistons are scuffed - Inspect pistons and liners, replace as required |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Battery faulty cell - Use a new battery |
| Battery wiring harness failure - Inspect electrical cables for defects, repair or replace |
| Loose or corroded battery cables and terminals - Tighten or clean terminals and cables |
| Worn belt or improperly adjusted belt tension - Adjust belt tension correctly or replace belt |
| Starter motor cranks slow |
| Battery capacity is low - Charge the battery |
| Battery drains quickly - Service battery or change it |
| Bad battery electrical wire harness - Check wires for malfunctions, repair or replace |
| Loose or corroded terminals and cables - Tighten or service terminals and cables |
| Starter motor is not working |
| Low battery capacity - Charge the battery |
| Discharged or defective battery - Recharge or change battery |
| Faulty starter motor - Replace or repair starter |
| Cables harness is improperly connected or disconnected - Inspect cables harness and reconnect it properly |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission noise |
| Transmission fluid level is insufficient or fluid is contaminated - Fill the transmission with fresh fluid or add fluid to the correct level |
| Worn or misadjusted speed control rod linkage - Adjust or change rod linkage |
| Relief valve is faulty - Replace relief valve |
| Transmission overload - Reduce the load is required |
| Transmission parts are worm or defective - Change or repair damaged parts |
| Transmission fluid overheats |
| Low transmission fluid level - Fill the transmission housing with fluid |
| Transmission fluid filter is dirty - Change or clean the transmission fluid filter |
| Cooling components are clogged or damaged - Check all cooling components and change or repair if required |
| Transmission overloaded - Reduce loading |
| Low transmission oil level - Checking transmission oil level and add if necessary |
| Low charge pressure - Test charge pressure |
| Defective or worn relief valve - Replace relief valve as required |
| Worn gaskets or seals - Install new components |
| Transmission housing internal pressure is excessive - Change or repair damaged parts |
| Plugged transmission fluid drain pipe - Service or change drain pipe |
| Hydraulics Troubleshooting |
| Hydraulic system overheated |
| The system pressure has not been corrected - Make the correct settings |
| Unadjusted or defective main relief valve - Adjust the valve or replace if necessary |
| Hydraulic fluid is dirty - Hydraulic fluid change required |
| Air leaks in hydraulic system - Check the suction line, pump seals, and fittings |
| Low hydraulic oil pressure |
| Not enough hydraulic oil in the system - Fill up the hydraulic oil |
| Hydraulic fluid filter clogging - Clean the hydraulic filter or install new filter element |
| Hydraulic pump malfunction - Check hydraulic pump flow and replace pump if necessary |
| Defective or incorrect setting hydraulic spool valve block - Adjust properly or replace |
| Hydraulic cylinder is broken - Inspect cylinder components for damage or wear and change if required |
| Leakage in hydraulic pipes - Detect leaks in the system and fix it |
| 3-point hitch lifts slowly or won't lift |
| Not enough hydraulic fluid in the system - Check and refill the hydraulic fluid |
| Hydraulic fluid is too cold - Allow fluid to warm |
| Hydraulic oil filter clogging - Clean the hydraulic filter element or replace if necessary |
| Defective hydraulic pump - Check pump capacity and change if necessary |
| Main relief valve is damaged or adjusted improperly - Adjust or change relief valve |
| Damaged or incorrect adjusted hydraulic control valve - Adjust properly or replace |
| Hydraulic cylinder is not working - Inspect cylinder components for wear or damage and change if required |
| Broken or loose suction line - Retighten or change |
| 3-point hitch drops slowly or won't drop |
| Hydraulic spool valve block is defective or set improper - Replace or adjust properly |
| Hydraulic cylinder is faulty - Check cylinder components for wear or damage and change if necessary |
| Lift arm shaft is worn - Change the shaft |
| Internal mechanical failure of the hitch - Replace defective or worn hitch parts |
| 3-point hitch lifting or lowering is jerky |
| Aeration in hydraulic system - Check the suction pipe, fittings, and pump seals |
| Hydraulic fluid is dirty - Hydraulic fluid change required |
| Faulty hydraulic oil pump - Check pump flow and change pump if necessary |
| Hydraulic control valve is defective or set improper - Change or adjust properly |
| Hydraulic cylinder is not working - Check cylinder parts for damage or wear and replace 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 |
