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John Deere 1025R Troubleshooting
The
John Deere 1025R sub-compact utility tractor was manufactured from 2013 to 2021.
The John Deere 1025R driveline includes a 77.2 cubic inches (1.26 L) Yanmar
3TNV80 4-cycle vertical in-line 3-cylinder indirect injection naturally
aspirated water-cooled diesel engine and 2-range hydrostatic transmission with
infinite forward and reverse gears.
The engine has a cylinder bore of 3.15" (80 mm), piston stroke of 3.31"
(84 mm), and maximum power of 24.2 hp (17.8 kW). Max. travel speed
(forward and reverse): 9.1 mph (14.5 km/h). The open center hydraulic
system used a gear pump with rated capacity of 3.5 gal/min (13.3 l/min).
The hydraulic system pressure is 138 bar (2000 psi). The tractor is
equipped with a power steering system, wet disc brakes, 18x8.50-10 front
tires, and 26x12.00-12 rear tires. The wheelbase is 57" (1450 mm).
Compatible attachments for the John Deere 1025R: 54" or 60" mid-mount
3-blade AutoConnect mower decks, 54" front-mount blade, John Deere D120
front-end loader with lift capacity to full height of 825 lbs (374 kg),
John Deere H120 front-end loader with lift capacity to full height of
836 lbs (380 kg), and John Deere 260 backhoe with maximum digging depth
of 74" (1870 mm).
| Engine Troubleshooting |
| Engine hard starting or not starting |
| Fuel filter clogging - Replace the filter element |
| No fuel injection - Open fuel cock to inject fuel |
| Air in fuel lines - Bleed fuel lines |
| Dirty or damaged injectors - Inspect fuel injectors and replace if necessary |
| Fuel injection pump is damaged - Replace injection pump or repair it |
| Low cylinder compression - Check and replace worn parts |
| Diesel stalls while running |
| Coolant temperature is low - Warm up to required temperature |
| There is air in the fuel system - Bleed the system |
| Improper fuel injection - Fuel injection settings required |
| Plugged fuel filter - Service or replace the filter |
| Faulty or dirty injectors - Change fuel injectors |
| Fuel injection pump out of timing - Repair or replace fuel injection pump |
| Clogged fuel filter element - Change the filter element |
| Dirty or defective injector nozzles - Test injector nozzles and replace as required |
| Fuel injection pump is broken - Rebuild or change fuel pump |
| Dirty air cleaner - Replace or service air cleaner element |
| Incorrect low idle setting - Test and adjust |
| Fuel injection pump is faulty - Rebuild or replace pump |
| Fuel injector nozzles are faulty - Change or clean injector nozzles |
| The valve clearance is incorrect - Check and adjust |
| Coolant level is low - Coolant needs to be refilled. Inspect the system for leaks |
| Cooling system is dirty or cooling components are damaged - Flush cooling system or change faulty components |
| Lack of engine oil - Need to add engine oil |
| Fan belt tension is improper or belt is damaged - Adjust as required or replace belt |
| Thermostat failure - Check and change if necessary |
| Fuel injectors are damaged or dirty - Check fuel injectors and replace if required |
| Improper fuel injection pressure - Adjust pressure to proper level |
| Dirty air filter - Replace filter or install new filter element |
| Dirty oil filter element - Replace or service engine oil filter |
| Engine overload - Reduce load or shift to lower gear |
| Improper valve clearance - Have it adjusted |
| Wrong adjustment of low idle speed - Correct low idle settings |
| Clogged fuel pipes or hoses - Service fuel pipes and hoses |
| Engine compression is insufficient: Inlet or outlet valves are defective - Change the valves |
| Timing of fuel injection pump is not adjusted - Fuel injection pump timing adjustment needs to be corrected |
| Faulty fuel injector nozzles - Install a new set of well-balanced nozzles |
| Engine oil level is low - Checking oil level and add if necessary |
| Engine is cold - Warm up engine as required |
| Main bearings or crankshaft are worn out - Install new parts |
| Defective or broken piston rings - Replace the piston rings as required |
| Loose flywheel bolts - Inspect flywheel bolts and tighten properly |
| Diesel engine using too much oil |
| Oil leakage: Gaskets or seals are excessively worn - Worn parts need to be replaced |
| Improper oil viscosity - Fill up with the correct oil viscosity |
| Piston rings are seized or worn - Have piston rings replaced |
| Damaged valve stems or valve guides - Replace defective valves |
| Cylinder liners or pistons are damaged - Check liners and pistons, replace as required |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Battery failing - Replace the battery |
| Battery cable harness failure - Check battery electrical cable for defects, replace or repair |
| Loose or corroded cables and terminals - Terminals and cables need to be tightened or cleaned |
| Belt wear or improper belt tension adjustment - Adjust belt tension properly or change belt |
| Battery capacity is low - Battery needs to be recharged |
| Battery runs out quickly - Service battery or change it |
| Battery wiring harness failure - Inspect electrical cables for defects, repair or replace |
| Battery cables and terminals are corroded or loose - Cables and terminals must be tightened or cleaned |
| Low battery capacity - Battery is drained, recharge it |
| Discharged or worn battery - Charge or change the battery |
| Starter motor failing - Repair or change starter |
| Disconnected or incorrectly connected cables - Need to reconnect cables correctly |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission makes noise |
| Fluid level is too low or fluid is dirty - Change fluid or top up to proper level |
| Speed control rod linkage is damaged or unadjusted - Adjust or replace control rod linkage |
| Relief valve sticking - Replace relief valve |
| Transmission overload - Reduce transmission load |
| Transmission parts are worm or defective - After disassembly and checking, replace worn components |
| Transmission oil overheats |
| Fluid level is low - Fill system with correct transmission fluid level |
| Transmission oil filter element is clogged - Change or clean the transmission oil filter |
| Cooling components are defective or plugged - Inspect all cooling components and replace or repair if necessary |
| Excessive loading - Load needs to be reduced |
| Fluid level is low - Fill up the transmission fluid |
| Charge pressure is too low - Test charge pressure |
| Defective or worn relief valve - Replace relief valve as required |
| Transmission fluid leaking |
| Worn gaskets or seals - Install new components |
| Internal transmission case pressure is too high - Repair or replace worn parts |
| Clogged transmission fluid drain line - Service or replace drain line |
| Hydraulics Troubleshooting |
| Hydraulic system overheating |
| Improper hydraulic system pressure setting - Set the pressure properly |
| Unadjusted or defective main relief valve - Adjust or replace the relief valve |
| Hydraulic oil is dirty - Hydraulic oil change required |
| Air enters in hydraulic system - Inspect the suction line, pump seals, and fittings |
| Hydraulic oil pressure is low |
| Not enough hydraulic fluid in the system - Need to add fluid |
| Hydraulic fluid filter element is dirty - Clean the hydraulic filter element or replace if necessary |
| Hydraulic pump is defective - Test the pump flow rate and change pump if required |
| Hydraulic control valve block is defective or set improper - Adjust properly or change |
| Broken hydraulic cylinder - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Hydraulic pipes are leaking - Find leaks in the system and fix it |
| Hitch fails to lift or lifts slowly |
| Hydraulic oil level is insufficient - Fill up the hydraulic oil |
| Hydraulic oil is too cold - Allow oil to warm |
| Hydraulic oil filter is dirty - Replace hydraulic filter element or service if necessary |
| Hydraulic pump is faulty - Test the pump flow rate and install new pump if required |
| Faulty or incorrectly adjusted main relief valve - Adjust or change relief valve |
| Hydraulic spool valve block is not set properly or defective - Set properly or replace |
| Hydraulic cylinder is defective - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Damaged or loose hydraulic suction line - Tighten or change it |
| Three-point hitch dropping is too slow or cannot be dropped |
| Hydraulic control valve block is not set properly or defective - Adjust correctly or replace |
| Hydraulic cylinder failure - Inspect cylinder components for wear or damage and change if required |
| Worn hitch cross shaft - Change the shaft |
| Damaged mechanical components of the hitch - Change defective or worn hitch components |
| Hitch jerks when drop or lift |
| Hydraulic system sucks air - Check the pump seals, suction pipe, and fittings |
| Hydraulic oil is dirty - Hydraulic oil change required |
| Defective hydraulic pump - Check the pump performance and replace it if required |
| Hydraulic spool valve is defective or set improper - Replace or adjust correctly |
| Hydraulic cylinder failure - Check cylinder components for wear or damage and change if necessary |
| Steering System Troubleshooting |
| Steering is hard |
| Steering column is defective or incorrectly installed - Steering column must be installed correctly or replaced |
| Air in steering system - Bleed the steering system |
| Improper toe-in adjustment - Check and adjust toe-in |
| Deflated front tyres - Inflate tyres as needed |
| Steering pump stopped working - Check the steering pump and replace if necessary |
| Power steering valve has wear or malfunction - Inspect and replace as required |
| Relief valve failure or seizing - Install a new relief valve or clean it |
| Insufficient steering fluid - Fill up the steering fluid |
| Steering system oil leak - Retighten joints of the hydraulic steering pipes and hoses |
| Excessive steering wheel free play |
| Steering column shaft or coupling is worn out - Change defective component |
| Worn or defective power steering valve - Replace or repair steering valve as required |
| Hydraulic steering pump is defective - Check the hydraulic steering pump and change if necessary |
| Steering tie-rod ends or linkage are defective - Replace damaged component |
| Tractor pulls to left or right |
| Tires are deflated - Need to inflate tires |
| Not adjusted toe-in - Adjust toe-in properly |
| Steering tie-rod ends or linkage are worn - Replace damaged part |
| Power steering valve has wear or malfunction - Change or repair steering valve if required |
| Steering cylinder is defective - Change or repair steering cylinder |
| Worn or incorrectly adjusted or worn front hub bearings - Adjust correctly or change bearings |
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| Farm Tractors Technical Specifications |
