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Kubota B1820 Troubleshooting
The
Kubota B1820 is a 2WD or 4WD compact utility tractor. This model was
manufactured from 2009 to 2014. The components of Kubota B1820 powerline system:
a 47.5 cubic inches (0.78 L) Kubota D782 vertical three-cylinder naturally
aspirated liquid-cooled diesel engine with a rated power of 16.1 hp (11.9 kW),
and gear shift transmission with 6 forward and 2 reverse gears. The maximum
travel speed (forward/reverse): 11.9 mph (19 km/h) and 4.4 mph (7 km/h). The
open center hydraulic system includes a gear pump with rated fluid flow of 3.7
gal/min (14.1 l/min).
The hydraulic pressure is 120 bar (1740 psi). The 2-wheel drive models
are equipped with 4.5x10 front tires and 7.0x16 rear tires. The 5.0x12
front tires and 8.0x16 rear tires are used for 4-wheel drive tractors.
The wheelbase is 50.2" (1270 mm). The tractor is compatible with Kubota
LA213 front-end loader with a lift capacity to full height of 665 lbs
(302 kg) and breakout force of 1472 (668 kg).
| Engine Troubleshooting |
| Engine won't start or difficult to start |
| Fuel filter is clogged - Clean the filter or install new filter element |
| Fuel supply valve is closed - Open fuel supply valve |
| Fuel lines leaking air - Tighten clamps, change faulty pipes |
| Fuel injectors are defective or dirty - Inspect fuel injectors and replace if necessary |
| Fuel injection pump damage - Install a new fuel pump or repair |
| Poor compression - Inspect cylinder block and change worn parts |
| Diesel shuts off during operation |
| Engine is not preheated - Warm up the engine |
| Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system |
| Uneven fuel injections - Repair or adjustment |
| Fuel filter clogging - Clean the filter element |
| Dirty or damaged injectors - Inspect fuel injectors and replace if necessary |
| Diesel starts and then stalls |
| Fuel injection pump timing is incorrect - Correct injection timing |
| Fuel filter is clogged - Change filter element |
| Fuel injector nozzles are dirty or defective - Inspect injector nozzles and change if required |
| Fuel injection pump damage - Install a new fuel pump or repair |
| Air cleaner clogging - Service or change air cleaner |
| Wrong adjustment of low idle speed - Correct the settings |
| Fuel injection pump malfunction - Repair or replace injection pump |
| Clogged or defective injector nozzles - Replace fuel injector nozzles |
| Incorrect valve clearance - Have it adjusted |
| Insufficient coolant - Add the coolant. Repair any leaks if necessary |
| Cooling system components are defective or system is clogged - Replace faulty parts or service cooling system |
| Lack of engine oil - Check and refill engine oil |
| Incorrect fan belt tension or broken belt - Adjust as required or replace belt |
| Thermostat is defective - Replace the thermostat |
| Diesel engine is losing power |
| Dirty or faulty injectors - Check fuel injectors and replace if required |
| Fuel injection pressure is wrong - Check the fuel injection pressure and adjust if necessary |
| Air filter is dirty - Replace or clean the air filter element |
| Dirty oil filter - Replace or service engine oil filter |
| Engine overload - Reduce the load or use a lower gear |
| Incorrect valve clearance - Adjust valve clearance |
| Incorrect low idle setting - Normalize low idle speed |
| Fuel pipes or hoses are clogged - Clean fuel system pipes and hoses |
| Lack of compression: Inlet or outlet valves are defective - Replace the valves as required |
| Fuel injection pump timing is incorrect - Adjust the fuel injection pump timing correctly |
| Clogged or defective injector nozzles - Change injector nozzles |
| Low engine oil level - Check and refill engine oil |
| Engine is not preheated - Warm up engine to required temperature |
| Crankshaft or main bearings are worn out - Change or repair worn components |
| Broken or defective piston rings - Piston rings replacement required |
| Loose flywheel screws - Check the flywheel screws and tighten as required |
| Engine consuming too much oil |
| Oil leakage: Seals or gaskets are defective - Worn parts need to be replaced |
| Oil viscosity is incorrect - Use proper viscosity oil |
| Piston rings are defective or worn - Change piston rings |
| Worn valve stems and valve guides - Valves must be replaced |
| Worn cylinder liners or pistons - Check pistons and liners, change as required |
| Electrical System Troubleshooting |
| Battery does not charge |
| Battery failing - Replace the battery |
| Battery wiring harness failure - Inspect electrical cables for defects, repair or replace |
| Battery cables and terminals are loose or corroded - Tighten or service cables and terminals |
| Improper belt tension adjustment or damaged belt - Change belt or correctly adjust belt tension |
| Battery voltage is low - Battery needs to be recharged |
| Battery does not hold charge - Service battery or replace it |
| Battery wiring harness damage - Inspect battery wiring for damage, replace or repair |
| Corroded or loose battery terminals and cables - Clean or tighten cables and terminals |
| Low battery output voltage - Recharge the battery |
| Discharged or faulty battery - Charge or change the battery |
| Starter motor is damaged - Repair or change starter |
| Disconnected or incorrectly connected cables - Need to reconnect cables correctly |
| Transmission Troubleshooting |
| Gear hard to shift |
| Failure or improper clutch adjustment - Clutch needs to be adjusted or changed |
| Gear shift linkage is stuck or worn - Service or replace shift linkage |
| Damaged or worn shift forks - Shift forks need to be replaced |
| Gear shifting mechanism is worn - Change worn components |
| Transmission fluid pressure is insufficient |
| Fluid level is low - Fill up the transmission fluid |
| Clogged transmission fluid filter element (if fitted) - Change or service the transmission fluid filter |
| Damaged relief valve - Install a new valve |
| Transmission makes excessive noise |
| Bearings are worn or broken - Bearings need to be changed |
| Oil level is insufficient - Add transmission oil as required |
| Contaminated transmission oil - Fill up with fresh transmission oil |
| Improper backlash or damaged gears - Set backlash correctly or change the gears |
| Bent or worn shift forks - Shift forks need to be replaced |
| Transmission fluid leakage |
| Seals or gaskets are damaged - Change defective gaskets or seal |
| Cracked transmission housing - Housing needs to be replaced |
| Hydraulics Troubleshooting |
| Hydraulic system overheating |
| System pressure has not been adjusted correctly - Pressure needs to be adjust correctly |
| Main relief valve is faulty or misadjusted - Replace or set up the relief valve |
| Hydraulic fluid is contaminated - Fill up with new hydraulic fluid |
| Hydraulic system sucks air - Check the pump seals, suction pipe, and fittings |
| Insufficient hydraulic fluid pressure |
| Lack of hydraulic oil - Fill the hydraulic system with oil |
| Hydraulic fluid filter is clogged - Hydraulic filter maintenance required |
| Hydraulic pump failure - Flow-rate hydraulic pump and replace pump if necessary |
| Hydraulic spool valve block is faulty or out of adjustment - Adjust properly or replace |
| Hydraulic cylinder failure - Inspect cylinder components for wear or damage and change if required |
| Hydraulic pipes are leaking - Detect leaks in hydraulic system and repair it |
| 3-point hitch won't raise or raises slowly |
| Not enough hydraulic oil in the system - Fill up the hydraulic oil |
| Cold oil in hydraulic system - Wait for oil to warm up |
| Dirty hydraulic oil filter - Clean the hydraulic filter or install new filter element |
| Hydraulic pump malfunction - Test pump performance and replace pump if necessary |
| Defective or misadjusted main relief valve - Adjust or replace the relief valve |
| Hydraulic spool valve is faulty or out of adjustment - Adjust correctly or change |
| Hydraulic cylinder is not working - Check cylinder components for wear or damage and change if necessary |
| Suction pipe is broken or loose - Tighten the pipe or replace it |
| 3-point hitch fails to drop or drops slowly |
| Damaged or incorrect adjusted hydraulic spool valve - Replace or adjust properly |
| Hydraulic cylinder failure - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Hitch rock shaft is damaged - Replace the shaft |
| Internal mechanical malfunction with hitch - Change faulty or worn hitch parts |
| Hitch is lowered or raised jerkily |
| Air trapped in the hydraulic system - Inspect the pump seals, suction line, and fittings |
| Hydraulic fluid is contaminated - Fill up with new hydraulic fluid |
| Hydraulic pump malfunction - Check pump capacity and change if necessary |
| Defective or incorrect setting hydraulic spool valve block - Replace or adjust properly |
| Hydraulic cylinder failure - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
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| Farm Tractors Technical Specifications |
