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John Deere 1026R Troubleshooting
The
John Deere 1026R is a 4-wheel drive sub-compact utility tractor. This model was
manufactured between 2011 and 2012. The JD 1026R driveline consists of Yanmar
3TNV76 vertical 3-cylinder indirect injection naturally aspirated diesel engine
and 2-range hydrostatic transmission with infinite forward and reverse gears.
A 68.1 cu.in (1.1 L) engine has a cylinder bore of 2.99" (76 mm), piston
stroke of 3.23" (82 mm), and rated power of 25.2 hp (18.5 kW). Max.
travel speed: 4.1 mph (6.6 km/h) using a low range, and 9.1 mph (14.6
km/h) using a high range.
The open center hydraulic system includes a gear pump with a flow rate
of 3.5 gal/min (13.2 l/min). The main relief pressure is 2000 psi (138
bar). The John Deere 1026R was equipped with 18x8.50-10 front tires and
26x12.00-12 rear tires. The wheelbase is 57.1" (1450 mm).
The tractor is compatible with a 54" mid-mount John Deere 54D
AutoConnect mower deck, 60" mid-mount John Deere 60D AutoConnect mower
deck, John Deere D120 loader with lift capacity to max height of 825 lbs
(374 kg), and John Deere H120 loader with ift capacity to max height of
836 lbs (379 kg).
| Engine Troubleshooting |
| Engine doesn't start or hard to start |
| Fuel filter is clogged - Clean the filter element |
| Closed fuel supply valve - Open supply valve to inject fuel |
| Air trapped in fuel system - Bleed air |
| Fuel injectors are clogged or faulty - Check fuel injectors and replace if required |
| Fuel injection pump malfunction - Change or repair the pump |
| Poor compression - Inspect cylinder block and change damaged parts |
| Engine stops running while driving |
| Engine is not preheated - Normalize the temperature by warming up the engine |
| Fuel-line is leaking air - Retighten clamps, replace defective pipes |
| Uneven fuel injections - Repair or adjustment |
| Fuel filter plugging - Clean or change the filter |
| Dirty or faulty injectors - Clean or replace fuel injectors |
| Engine stops after starting |
| Timing of fuel injection pump is wrong - Correct injection timing |
| Dirty fuel filter element - Replace filter element |
| Fuel injector nozzles fault - Install a new set of well-balanced nozzles |
| Fuel injection pump is not operating properly - Change or repair the pump |
| Air cleaner element is dirty - Install new cleaner element or replace it |
| Incorrectly set low idle speed - Adjust low idle speed |
| Damaged fuel injection pump - Repair or replace injection pump |
| Faulty fuel injector nozzles - Install a new set of well-balanced nozzles |
| Improper valve clearance - Adjust valve clearance according to specifications |
| Lack of coolant in cooling system - Top up coolant. Check for coolant leaks |
| Cooling system components are damaged or system is dirty - Replace faulty parts or service cooling system |
| Engine oil level is insufficient - Add oil to the engine crankcase |
| Fan belt is broken or belt tension is unadjusted - Adjust belt tension correctly or change it |
| Thermostat malfunction - Replace the thermostat |
| Dirty or damaged injectors - Change fuel injectors |
| Uneven fuel injection pressure - Adjust to proper pressure |
| Dirty air filter element - Service or change air filter |
| Oil filter element clogged - Service or replace engine oil filter |
| Engine is overloaded - Load reducing required |
| Excessive valve clearance - Check and adjust |
| Incorrect low idle speed adjustment - Adjust low idling as recommended |
| Restricted fuel hoses or pipes - Clean fuel system pipes and hoses |
| Lack of compression: Valves are faulty or leaking - Have valves replaced |
| Incorrect setting of fuel injection pump timing - Check the fuel injection pump timing setting |
| Fuel injector nozzles are defective or dirty - Install new set of properly balanced nozzles |
| Engine oil insufficient - Fill up the oil to required level |
| Engine not warmed up - Normalize the temperature by warming up the engine |
| Worn crankshaft or main bearings - Change or repair worn components |
| Piston rings failure - Piston rings need to be replaced |
| Flywheel mounting screws are loose - Tighten the screws |
| Excessive engine oil consumption |
| Oil leaking: Defective seals or gaskets - Replace worn parts to avoid leaks |
| Crankcase oil too light - Fill up with the proper oil viscosity |
| Stuck or defective piston rings - Change piston rings |
| Valve guides or stems are damaged - Valves replacement required |
| Cylinder liners or pistons are scuffed - Check pistons and liners, install new parts as required |
| Electrical System Troubleshooting |
| Battery will not charge |
| Faulty cell in battery - Battery replacement required |
| Bad battery cable harness - Inspect cables for malfunctions, repair or change |
| Corroded or loose terminals and cables - Clean or tighten terminals and cables |
| Belt is defective or belt tension is improperly adjusted Adjust belt tension as required or replace belt |
| Battery power is low - Low battery charging, charge as required |
| Battery drains quickly - Service charging system or replace battery |
| Bad battery wiring harness - Inspect wiring for malfunctions, replace or repair |
| Loose or corroded battery terminals and cables - Tighten or clean cables and terminals |
| Starter motor is not working |
| Battery power is low - Battery is drained, charge it |
| Drained or faulty battery - Need to charge or replace the battery |
| Faulty starter motor - Starter should be changed |
| Battery cables are disconnected or incorrectly connected - Check cables and reconnect it correctly |
| Hydrostatic Transmission Troubleshooting |
| Hydrostatic transmission noises |
| Low fluid level or contaminated fluid - Add the fluid to proper level or pour fresh fluid |
| Damaged or out of adjustment speed control rod linkage - Adjust or change rod linkage |
| Relief valve is defective - Change relief valve |
| Transmission is under excessive load - Load needs to be reduced |
| Defective or worn components of transmission - After disassembling and checking, change defective parts |
| Transmission oil over heats |
| Oil level is insufficient - Fill up the transmission oil |
| Transmission fluid filter clogging - Change or service the transmission fluid filter |
| Defective or plugged cooling components - Inspect all cooling components and replace or clean if necessary |
| Transmission is under excessive load - The load should be reduced |
| Low transmission fluid level - Check and refill the transmission fluid |
| Low charge pressure - Check charge pressure |
| Relief valve is damaged or worn - Replace the valve |
| Gaskets or seals are broken - Gaskets or seal need to be replaced |
| Transmission housing internal pressure is excessive - Change or repair damaged parts |
| Oil return tube is plugged - Check tube and clean if required |
| Hydraulics Troubleshooting |
| Hydraulic system is too hot |
| System pressure has not been adjusted correctly - Pressure needs to be adjust correctly |
| Misadjusted or defective main relief valve - Set up or change the relief valve |
| Contaminated hydraulic fluid - Change hydraulic fluid |
| Air leaks in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Insufficient hydraulic fluid pressure |
| Hydraulic fluid level is insufficient - Add fluid to the hydraulic system |
| Hydraulic fluid filter element clogging - Hydraulic filter maintenance required |
| Hydraulic pump malfunction - Test pump flow rate and replace pump if required |
| Hydraulic control valve block is faulty or out of adjustment - Change or adjust correctly |
| Defective hydraulic cylinder - Inspect the hydraulic cylinder components for damage or wear and change if required |
| Leakage in hydraulic pipes - Identify leaks in the system and repair it |
| Hitch won't lift or lifts slowly |
| Lack of hydraulic fluid - Add fluid to the hydraulic system |
| Cold oil in hydraulic system - Wait for oil to warm up |
| Hydraulic fluid filter is dirty - Replace filter element or clean if required |
| Hydraulic pump is defective - Check pump flow and change pump if necessary |
| Unadjusted or defective main relief valve - Set up or change the relief valve |
| Defective or not adjusted hydraulic spool valve - Adjust correctly or change |
| Hydraulic cylinder malfunction - Check the hydraulic cylinder components for damage or wear and change if necessary |
| Broken or disconnected suction line - Connect or replace |
| Hitch won't lower or lowers slowly |
| Hydraulic spool valve block is faulty or out of adjustment - Replace or adjust correctly |
| Hydraulic cylinder is broken - Check cylinder parts for wear or damage and replace if necessary |
| Worn lift arm shaft - Replace the shaft |
| The hitch has internal mechanical malfunctions - Replace damaged or worn hitch parts |
| Hitch lowering or lifting is not smoothly |
| Aeration in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Dirty hydraulic oil - The oil must be changed |
| Hydraulic pump is defective - Test the pump flow rate and install new pump if required |
| Faulty or incorrect setting hydraulic control valve - Adjust properly or change |
| Hydraulic cylinder is broken - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Steering System Troubleshooting |
| Heavy steering |
| Steering column is worn or improperly fitted - Refit properly or change the steering column |
| Air enters in steering system - Bleed air |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Tires are incorrectly inflated - Inflate as required |
| Worn steering pump - Check the hydraulic steering pump and change if necessary |
| Power steering valve is damaged or worn - Repair or change the steering valve |
| Relief valve is faulty or stuck - Replace or service relief valve |
| Steering fluid level is insufficient - Add oil to steering system |
| Oil leakage in the steering system - Tighten the steering hose and pipe joints |
| Steering wheel free play is excessive |
| Steering column coupling or shaft is worn - Replace faulty part |
| Faulty or worn power steering valve - Change or repair steering valve if required |
| Steering pump malfunction - Repair or change steering pump |
| Steering linkage or tie-rod ends are worn - Replace failed part |
| Front wheels wander to left or right |
| Tires are improperly inflated - Inflate as necessary |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Steering linkage or tie-rod ends are defective - Replace failed part |
| Power steering valve is defective or worn - Repair or change the steering unit |
| Worn steering cylinder - Repair or replace hydraulic steering cylinder |
| Defective or improperly adjusted front hub bearings - Adjust properly or change bearings |
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| Farm Tractors Technical Specifications |
