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John Deere 2025R Troubleshooting
The
John Deere 2025R is a four wheel drive compact utility tractor from 2R series.
This model was manufactured between 2013 and 2021. The John Deere 2025R
driveline includes a 77.2 cu.in (1.3L) Yanmar 3TNV80F 4-cycle vertical in-line
3-cylinder indirect injection naturally aspirated water-cooled diesel engine
with a max power of 25 hp (18.6 kW), and 2-range hydrostatic transmission with
infinite forward and reverse gears.
The engine has an in-line type fuel injection pump, forced lubrication
with trochoid pump, liquid-cooled with radiator, and dry type air
cleaner. Max forward speed - 12.3 mph (19.8 km/h), maximum reverse speed
- 11.4 mph (18.2 km/h). The open center hydraulic system includes a gear
pump with rated capacity of 3.4 gpm (13 lpm). The hydraulic system
pressure is 167 bar (2420 psi). The John Deere 2025R is equipped with a
hydrostatic power steering, wet disc brakes, 23x8.50-12 front tires, and
31x12.00-16.5 rear tires. The wheelbase is 63" (1600 mm).
The tractor is compatible with 54", 60", 62" mid-mount 3-blade
AutoConnect mower decks with hydraulic lift system, 47" or 54"
front-mount two-stage snowblowers, 54" or 60" front-mount blade,
John
Deere 120R front-end loader with lift capacity to full height of 754 lbs
(342 kg), and John Deere 270B backhoe with maximum digging depth of 84"
(2130 mm).
| Engine Troubleshooting |
| Engine will not start or hard to start |
| Fuel filter is clogged - Replace filter element |
| No fuel injection - Open fuel cock to inject fuel |
| Air in fuel pipes - Bleed fuel pipes |
| Fuel injectors are damaged or dirty - Clean or replace fuel injectors |
| Faulty fuel injection pump - Repair or install new pump |
| Low compression - Check cylinder block and change faulty parts |
| Engine stops running unexpectedly |
| Engine has not warmed up to the recommended temperature - Normalize the engine temperature |
| Air in fuel system - Air-bleed fuel system |
| Uneven fuel injections - Repair or adjustment |
| Fuel filter clogging - Change the filter element |
| Fuel injectors are damaged or dirty - Check fuel injectors and replace if required |
| Engine starts and stalls immediately |
| Unadjusted fuel injection pump timing - Adjust the fuel injection pump timing correctly |
| Plugged fuel filter - Filter maintenance required |
| Fuel injector nozzles are defective or dirty - Service or replace injector nozzles |
| Fuel injection pump is faulty - Replace injection pump or repair it |
| Air cleaner element is dirty - Replace or service air cleaner element |
| Incorrect low idle speed adjustment - Adjust the low idle speed |
| Fuel injection pump malfunctioning - Change pump or rebuild it |
| Fuel injector nozzles are faulty - Change or clean injector nozzles |
| Valve clearance is wrong - Correct valve clearance needs to be set |
| Insufficient coolant fluid - Fill the radiator to the required level. Check for leaks or other malfunctions |
| Cooling system components are failed or system is dirty - Service the cooling system or replace faulty components |
| Engine oil insufficient - Need to add engine oil |
| Worn fan belt or incorrect belt tension - Adjust correctly or replace the belt |
| Thermostat is defective - Install new thermostat |
| Fuel injectors are damaged or dirty - Clean or replace fuel injectors |
| Incorrect fuel injection pressure - Correct the pressure settings |
| Air filter element is clogged - Change or replace air filter element |
| Oil filter element is dirty - Service or replace engine oil filter |
| Engine is overloaded - Reduce the load or use a lower gear |
| The valve clearance is not adjusted - Need to adjust valve clearance |
| Low idle speed setting is not correct - Adjust the low idle speed |
| Fuel hoses or pipes clogging - Service fuel pipes and hoses |
| Engine compression too low: Intake or exhaust valves are damaged - Replace the valves as required |
| Fuel injection pump out of timing - Correct injection timing |
| Fuel injector nozzles are dirty or defective - Change or clean injector nozzles |
| Engine oil level low - Checking oil level and add if necessary |
| Engine is not warmed up to the required temperature - Engine is not warmed up to the required temperature |
| Main bearings or crankshaft wear - Replace crankshaft or bearings |
| Piston rings are defective or broken - Replace the piston rings as required |
| Loose flywheel bolts - Inspect flywheel bolts and tighten properly |
| Excessive engine oil consumption |
| Oil leaks: Gaskets or seals can be faulty - Worn parts need to be replaced |
| Wrong oil viscosity - Use oil of proper viscosity |
| Piston rings are stuck or broken - Change the piston rings as required |
| Valve stems or guides are damaged - Valves need to be changed |
| Pistons or cylinder liners are worn - Inspect liners and pistons, fit new parts as necessary |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Dead cell in battery - Change the battery |
| Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair |
| Corroded or loose cables and terminals - Tighten or service cables and terminals |
| Improper belt tension adjustment or damaged belt - Adjust belt tension properly or replace belt |
| Low battery capacity - Battery needs to be recharged |
| Battery is draining quickly - Battery needs service or replacement |
| Bad battery cable harness - Inspect cables for malfunctions, repair or change |
| Loose or corroded terminals and cables - Tighten or clean terminals and cables |
| Low battery voltage - Battery is drained, recharge it |
| Drained or defective battery - Replace or charge as required |
| Defective starter motor - Starter should be changed |
| Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly |
| Hydrostatic Transmission Troubleshooting |
| HST transmission makes excessive noise |
| Transmission fluid level is insufficient or fluid is contaminated - Fill the transmission with fresh fluid or add fluid to the correct level |
| Speed control rod linkage is worn or not adjusted - Adjust or change rod linkage |
| Relief valve failure - Replace valve as required |
| Transmission is under excessive load - The load should be reduced |
| Transmission parts are worm or defective - Inspect internal transmission components and replace if necessary |
| Transmission oil over heats |
| Lack of transmission fluid supply - Fill up the transmission fluid |
| Transmission fluid filter is plugged - Replace or clean transmission fluid filter |
| Cooling components are plugged or defective - Inspect all cooling components and replace or repair if necessary |
| Transmission is under excessive load - Reduce loading |
| Oil level is insufficient - Fill up the transmission oil |
| Insufficient charge pressure - Test charge pressure |
| Worn or damaged relief valve - Replace valve as required |
| Transmission fluid leakage |
| Broken gaskets or seals - Replace worn gaskets or seal |
| High pressure inside the transmission case - Repair or replace worn parts |
| Plugged oil return tube - Clean or replace return tube |
| Hydraulics Troubleshooting |
| Hydraulic system is too hot |
| Improper pressure in hydraulic system - Adjust properly |
| Main relief valve is faulty or misadjusted - Adjust or change relief valve |
| Hydraulic fluid is contaminated - Fill up with new hydraulic fluid |
| Air in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Insufficient hydraulic oil pressure |
| Hydraulic fluid level is insufficient - Check and refill the hydraulic fluid |
| Hydraulic fluid filter is dirty - Clean the hydraulic filter element or replace if necessary |
| Hydraulic pump malfunction - Check pump performance and change it if necessary |
| Hydraulic spool valve is defective or set improper - Adjust correctly or replace |
| Hydraulic cylinder is faulty - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Hydraulic lines are leaking - Find leaks in hydraulic system and repair it |
| Hitch fails to lift or lifts slowly |
| Hydraulic oil level is insufficient - Fill up the hydraulic oil |
| Cold hydraulic fluid - Warm up the fluid |
| Dirty hydraulic oil filter - Change the hydraulic filter element or service if required |
| Defective hydraulic pump - Test the pump flow rate and change pump if required |
| Main relief valve is defective or unadjusted - Adjust relief valve or change if required |
| Hydraulic control valve is not set properly or defective - Replace or adjust properly |
| Hydraulic cylinder is broken - Check cylinder components for wear or damage and change if necessary |
| Damaged or disconnected hydraulic suction pipe - Connect or replace the pipe |
| Hitch won't lower or lowers slowly |
| Faulty or incorrect setting hydraulic control valve - Adjust correctly or replace |
| Hydraulic cylinder failure - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Damaged hitch cross shaft - Change the shaft |
| Damaged mechanical components of the hitch - Change worn or defective hitch parts |
| 3-point hitch lift or lower is jerky |
| Air enters in hydraulic system - Check the suction line, pump seals, and fittings |
| Dirty hydraulic oil - The oil must be changed |
| Hydraulic pump failure - Check pump capacity and change if necessary |
| Defective or incorrect setting hydraulic spool valve block - Adjust correctly or change |
| Hydraulic cylinder is faulty - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Steering System Troubleshooting |
| Stiff steering |
| Steering column is worn or improperly fitted - Refit properly or change the steering column |
| Air enters in steering system - Need to bleed air |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Front tires are worn out - Install new tires |
| Steering pump not working - Install a new hydraulic steering pump |
| Faulty or worn power steering control valve - Inspect and replace as required |
| Defective or stuck relief valve - Install a new relief valve or clean it |
| Lack of steering oil - Fill the steering system with oil |
| Oil leakage in the steering system - Tighten connections of hydraulic hoses and pipes in steering system |
| Excessive steering wheel free play |
| Steering column shaft or coupling is worn out - Replace defective part |
| Power steering control valve has wear or damage - Inspect and change as required |
| Faulty steering pump - Replace or repair steering pump |
| Faulty or worn steering tie-rod ends or linkage - Change damaged part |
| Tractor pulls to left or right |
| Improper tire pressure - Check the pressure and inflate tires as required |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Steering tie-rod ends or linkage are defective - Replace damaged component |
| Worn or defective power steering control valve - Inspect and change as required |
| Defective steering cylinder - Change or repair steering cylinder |
| Improperly adjusted or worn front hub bearings - Adjust correctly or change bearings |
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| Farm Tractors Technical Specifications |
