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John Deere 2040S Troubleshooting
The
John Deere 2040S is a 2-wheel drive or 4-wheel drive utility tractor. This model
was manufactured between 1981 and 1987. The JD 2040S tractor is equipped with a
John Deere 4-cycle four-cylinder diesel engine rated at 75 Hp (56 kW) and 3.90L
(239.2 cubic inches) displacement.
The maximum torque is 238 Nm (175 lb-ft) at 1300 rpm. The transmission
includes a dry disc clutch and partially synchronized gearbox with 8
forward and 4 reverse gears, or 16x8 two-speed powershift gearbox. Max.
travel speed (forward and reverse): 18.9 mph (30.4 kph) / 8.4 mph (13.6
kph).
The closed center hydraulic system used a piston pump with rated
capacity of 12.4 gal/min (47 l/min). The hydraulic pressure is 2465 psi
(170 bar). The 2WD models are equipped with 10.0x16 front tires and
16.9x34 rear tires. The 13.6x24 front tires and 16.9x34 rear tires are
used for 4WD tractors. The wheelbase is 90.2 inches (2290 mm).
| Engine Troubleshooting |
| Engine doesn't start or hard to start |
| Clogged fuel filter element - Replace the filter element |
| No fuel injection - Open fuel cock to inject fuel |
| Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system |
| Dirty or damaged injectors - Change fuel injectors |
| Fuel injection pump is damaged - Change or repair the pump |
| Low cylinder compression - Check and replace worn parts |
| Engine shuts off unexpectedly during operation |
| Engine is not fully warmed up - Normalize the temperature by warming up the engine |
| Air in fuel system - Air-bleed fuel system |
| Improper fuel injection - Fuel injection settings required |
| Clogged fuel filter element - Change the filter element |
| Dirty or faulty injectors - Clean or replace fuel injectors |
| Engine starts and immediately stalls |
| Fuel injection pump out of timing - Fuel pump timing settings need to be corrected |
| Clogged fuel filter element - Clean or replace the filter |
| Fuel injector nozzles are clogged or faulty - Inspect injector nozzles and change if required |
| Fuel injection pump is not working correctly - Change pump or rebuild it |
| Clogged air cleaner element - Service or change air cleaner |
| Incorrectly set low idle speed - Adjust as required |
| Fuel injection pump failure - Rebuild or replace pump |
| Fuel injector nozzles are damaged - Service or replace injector nozzles |
| Improper valve clearance - Check and adjust |
| Engine coolant is insufficient - Top up coolant fluid. If there are leaks in the system, replace worn components |
| Cooling system components are failed or system is clogged - Change faulty components or service cooling system |
| Lack of engine oil - Check and refill engine oil |
| Worn fan belt or improper belt tension - Adjust correctly or replace the belt |
| Thermostat failure - Check and change if necessary |
| Fuel injectors are defective or dirty - Inspect fuel injectors and replace if necessary |
| Fuel injection pressure is wrong - Repair or replace injection pump |
| Air filter clogging - Replace filter or install new filter element |
| Engine oil filter is plugged - Clean or replace engine oil filter element |
| Engine is overloaded - Load reducing is recommended |
| The valve clearance is not adjusted - Check and adjust as required |
| Incorrect low idle speed adjustment - Adjustment required |
| Dirt in the fuel pipes or hoses - Service fuel hoses and pipes |
| Engine compression too low: Leaking or broken valves - Valve replacement required |
| Abnormal engine noise or knocking |
| Incorrect setting of fuel injection pump timing - Fuel pump timing settings need to be corrected |
| Fuel injector nozzles are damaged - Change or clean injector nozzles |
| Lack of engine oil - Need to add engine oil |
| Engine is cold - Warm up the engine |
| Main bearings or crankshaft are worn out - Need to install new components |
| Worn or broken piston rings - Install new piston rings |
| Flywheel screws are loose - Tighten the screws firmly |
| Excessive oil consumption |
| Oil leakage: Gaskets or seals can be faulty - Defective components must be replaced |
| Wrong oil viscosity - Use oil of correct viscosity |
| Worn or stuck piston rings - Change piston rings |
| Valve guides and stems are worn - Replace defective valves |
| Cylinder liners or pistons are scuffed - Inspect liners and pistons, change as necessary |
| Electrical System Troubleshooting |
| Battery does not charge |
| Dead cell in battery - Battery change required |
| Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair |
| Corroded or loose cables and terminals - Clean or tighten cables and terminals |
| Defective belt or improperly adjusted belt tension - Replace belt or correctly adjust belt tension |
| Starter motor cranks slow |
| Low battery output voltage - Battery needs to be recharged |
| Battery will not hold charge - Service charging system or change battery |
| Battery wiring harness failure - Inspect electrical cables for defects, repair or replace |
| Corroded or loose terminals and cables - Clean or tighten cables and terminals |
| Low battery capacity - Battery needs to be recharged |
| Drained or faulty battery - Charge or change the battery |
| Starter motor is defective - Repair or change starter |
| Disconnected or incorrectly connected cables - Inspect battery cables and connect correctly |
| Transmission Troubleshooting |
| Hard shifting |
| Incorrectly adjusted or damaged clutch - Adjust correctly or replace |
| Stuck or damaged gear shift linkage - Service or change the shift linkage |
| Bent or worn shift forks - Replace the shift forks |
| Gearshift mechanism is worn out - Repair or replace worn components if required |
| Transmission fluid pressure is insufficient |
| Fluid level is low - Check transmission fluid level and add it as required |
| Transmission oil filter is plugged (if fitted) - Change or service the transmission oil filter |
| Relief valve sticking - Install a new valve |
| Bearings are worn or damaged - Faulty bearings should be changed |
| Not enough oil in transmission - Correct the transmission oil level |
| Contaminated transmission oil - Fill up with fresh transmission oil |
| Backlash is incorrect or gears are worn - Replace gears or set backlash correctly |
| Damaged or worn shift forks - Install new shift forks |
| Gaskets or seals are damaged - Seals and gaskets replacement required |
| Cracked transmission housing - Housing needs to be replaced |
| Hydraulics Troubleshooting |
| Hydraulic system overheated |
| Hydraulic system pressure is incorrect - Hydraulic pressure needs to be set correctly |
| Faulty or incorrectly adjusted main relief valve - Adjust relief valve or change if required |
| Hydraulic fluid is dirty - Hydraulic fluid change required |
| Aeration in hydraulic system - Check the pump seals, suction pipe, and fittings |
| Insufficient hydraulic fluid pressure |
| Lack of hydraulic oil - Fill up the hydraulic oil |
| Hydraulic oil filter element clogging - Service the hydraulic filter or change if required |
| Defective hydraulic pump - Check pump flow and install new pump if necessary |
| Hydraulic spool valve is not set properly or defective - Replace or adjust correctly |
| Hydraulic cylinder malfunction - Check cylinder components for wear or damage and change if necessary |
| Leakage in hydraulic lines - Find leaks in hydraulic system and repair it |
| Three-point hitch lifting is too slow or cannot be lifted |
| Lack of hydraulic oil - Fill up the hydraulic oil |
| Cold fluid in hydraulic system - Wait for fluid to warm up |
| Dirty hydraulic oil filter - Service the hydraulic filter or change if required |
| Hydraulic pump is defective - Flow-rate hydraulic pump and replace pump if necessary |
| Faulty or incorrectly adjusted main relief valve - Adjust the valve or replace if necessary |
| Hydraulic spool valve block is defective or set improper - Set properly or replace |
| Hydraulic cylinder is broken - Inspect cylinder components for wear or damage and change if required |
| Damaged or loose hydraulic suction line - Tighten or change it |
| Three-point hitch dropping is too slow or cannot be dropped |
| Damaged or incorrect adjusted hydraulic spool valve - Replace or set properly |
| Defective hydraulic cylinder - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Lift arm shaft is worn - Replace the shaft |
| Defective mechanical parts of the hitch - Change worn or damaged hitch components |
| 3-point hitch lift or lower is jerky |
| Air in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Dirty hydraulic oil - The oil must be changed |
| Hydraulic pump is defective - Check pump performance and change it if necessary |
| Hydraulic spool valve is not set properly or defective - Adjust correctly or replace |
| Hydraulic cylinder is broken - Inspect cylinder parts for wear or damage and replace if required |
| Steering System Troubleshooting |
| Steering is hard |
| Steering column is defective or improperly assembled - Change steering column or assemble properly |
| Air leaks in steering system - Bleed air from system |
| Steering filter is clogged - Change steering filter element |
| Improper toe-in - Check toe-in and correct |
| Tire pressure is not correct - Check tire pressure and inflate as required |
| Steering pump is faulty - Steering pump needs to be repaired or replaced |
| Worn or defective hydrostatic/power steering unit - Repair or change the steering unit |
| Relief valve is worn or seized - Check relief valve and change if required |
| Steering oil insufficient - Check and refill steering oil |
| Oil leaks in the steering system - Retighten the connections of the hydraulic steering lines and hoses |
| Steering wheel free play is excessive |
| Steering column shaft or coupling has maximum wear - Change defective part |
| Hydrostatic/power has wear or damage - Repair or replace the steering unit |
| Worn steering pump - Replace or repair steering pump |
| Steering tie-rod ends or linkage are defective - Change failed part |
| Tractor pulls to left or right |
| Deflated front tyres - Inflate tyres as needed |
| Not adjusted toe-in - Check and adjust toe-in |
| Steering linkage or tie-rod ends are defective - Change damaged part |
| Hydrostatic/power steering unit is defective or worn - Inspect and change as required |
| Damaged steering cylinder - Replace or repair hydraulic steering cylinder |
| Front hub bearings are damaged or incorrectly adjusted - Install new bearings or adjust it correctly |
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| Farm Tractors Technical Specifications |
