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John Deere 1140 Troubleshooting

The John Deere 1140 is a two-wheel drive or four-wheel drive utility tractor. This model was manufactured from 1980 to 1987. The JD 1140 tractor is powered by 179 cubic inches (2.9 L) four-stroke three-cylinder naturally aspirated diesel engine with a maximum power of 55 hp (41 kW) and 185 Nm (136 lb-ft) of peak torque at 1400 rev/min.

The John Deere 1140 is fitted with two transmission options: Collar shift transmission with 8 forward and 4 reverse gears, or 16x8 two-speed powershift transmission with high and low range.

The maximum forward speed - 19.6 mph (31.5 km/h), max. reverse speed - 11.5 mph (18.4 km/h). The closed center constant pressure hydraulic system used a piston pump with fluid flow rate of 12.4 gpm (46.9 lpm). The hydraulic pressure is 170 bar (2465 psi). The 2WD models are equipped with 7.5x16 front tyres and 13.6x36 rear tyres. The 11.2x24 front tyres and 13.6x36 rear tyres fit 4WD tractors. The wheelbase is 80.7 inches (2040 mm).

Engine Troubleshooting
Engine will not start or hard to start
Fuel filter plugging - Service or replace the filter
The fuel shut-off valve is closed - Open fuel shut-off valve
Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system
Dirty or faulty injectors - Clean or replace fuel injectors
Damaged fuel injection pump - Replacement or repair required
Bad engine compression - Inspect and replace faulty parts
Engine stops running unexpectedly
Engine has not warmed up to required temperature - Normalize the temperature by warming up the engine
Air in fuel pipes - Bleed fuel pipes
Uneven fuel injections - Repair or adjustment
Clogged fuel filter element - Change the filter element
Fuel injectors are clogged or faulty - Inspect fuel injectors and replace if necessary
Engine starts and then stalls
Incorrectly set fuel injection pump timing - Check and correct settings
Fuel filter is dirty - Service or replace the filter
Fuel injector nozzles are clogged or faulty - Replace fuel injector nozzles
Defective fuel injection pump - Repair or change injection pump
Air cleaner is dirty - Replace cleaner or install new cleaner element
Engine shuts off while idling
Improperly adjusted low idle speed - Correct low idle settings
Fuel injection pump malfunctioning - Install a new pump or rebuild
Fuel injector nozzles are damaged or dirty - Test injector nozzles and replace as required
The valve clearance is not adjusted - Correct valve clearance
Engine is overheated
Low engine coolant - Fill cooling system to proper level. Repair any leaks if necessary
Cooling system components are defective or system is clogged - Service the cooling system or change faulty parts
Engine oil level is low - Checking oil level and add if necessary
Incorrect fan belt tension or broken belt - Adjust correctly or replace the belt
Thermostat is defective - Test thermostat opening temperature, replace as required
Engine power loss
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 element is dirty - Service or replace the air filter
Oil filter element clogging - Change or service engine oil filter
Diesel engine overloaded - Reduce load on the engine
Valve clearance is out of adjustment - Adjust valve clearance according to specifications
Too low idle RPM - Adjust low idle speed
Fuel hoses or pipes are clogged - Clean fuel pipes and hoses
Engine compression is low: Leaking or broken valves - Valve replacement required
Engine knocks or noises
Unadjusted fuel injection pump timing - Check and correct adjustments
Clogged or defective injector nozzles - Replace fuel injector nozzles
Low engine oil level - Check oil level and add oil as required
Engine is not warmed up to the required temperature - Warm up to required temperature
Main bearings or crankshaft failure - Change defective components as required
Broken or worn piston rings - Piston rings need to be replaced
Loose flywheel bolts - Check flywheel bolts and tighten properly
Diesel engine consuming too much oil
Oil leakage: Gaskets or seals may be damaged - Change to repair leaks
Improper oil viscosity - Use oil of correct viscosity
Piston rings are stuck or broken - Piston rings replacement required
Valve guides and stems are worn - Install new valves
Damaged cylinder liners or pistons - Check pistons and liners, change as required

Electrical System Troubleshooting
Battery won’t charge
Dead cell in battery - Battery replacement required
Battery cable harness damage - Check battery cables for damage, change or repair
Battery cables and terminals are loose or corroded - Tighten or service cables and terminals
Worn belt or improperly adjusted belt tension - Replace belt or correctly adjust belt tension
Starter cranks slowly
Battery voltage is low - Charge the battery
Battery discharges quickly - Service charging system or install new battery
Bad battery electrical wire harness - Check wires for malfunctions, repair or replace
Corroded or loose battery terminals and cables - Terminals and cables need to be tightened or cleaned
Starter does not work
Battery capacity is low - Battery is drained, charge it
Discharged or worn battery - Replace or charge as required
Starter motor is faulty - Repair or install a new starter
Disconnected or incorrectly connected cables - Inspect battery cables and connect correctly

Transmission Troubleshooting
Hard shifting
Clutch is not adjusted or faulty - Clutch needs to be adjusted or changed
Stuck or damaged gear shift linkage - Service or replace shift linkage
Shift forks are damaged or worn - Replace the shift forks
Faulty gear shifting mechanism - Faulty parts must be changed
Transmission oil pressure is insufficient
Fluid level is low - Add transmission fluid as required
Transmission oil filter element is clogged (if equipped) - Replace or service transmission oil filter
Relief valve failure - Replace the valve
Transmission noise
Bearings are worn or cracked - Bearings replacement required
Oil level is insufficient - Checking transmission oil level and add if necessary
Dirty transmission oil - Change transmission oil
Worn gears or improper backlash - Set backlash correctly or change the gears
Shift forks are worn or damaged - Replace defective shift forks
Transmission oil leaking
Gaskets or seals are damaged - Replace worn seal or gaskets
Cracked transmission housing - Housing needs to be replaced

Hydraulics Troubleshooting
Excessive hydraulic system heat
Hydraulic system pressure is incorrect - Hydraulic pressure needs to be set correctly
Main relief valve malfunction or incorrect adjustment - Adjust or replace the relief valve
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid
Air trapped in the hydraulic system - Check the suction line, pump seals, and fittings
Low hydraulic fluid pressure
Lack of hydraulic oil - Check oil level and add hydraulic oil as required
Dirty hydraulic oil filter - Clean or replace the hydraulic filter
Damaged hydraulic oil pump - Test pump performance and replace pump if necessary
Defective or not adjusted hydraulic spool valve - Replace or set properly
Hydraulic cylinder is faulty - Check cylinder parts for wear or damage and replace if necessary
Hydraulic pipes are leaking - Detect leaks in hydraulic system and repair it
3-point hitch lifts slowly or won't lift
Hydraulic fluid level is low - Check and refill the hydraulic fluid
Cold hydraulic oil - Warm up the oil
Hydraulic fluid filter is clogged - Clean or replace the hydraulic filter
Hydraulic pump not working - Check the pump capacity and replace pump if required
Defective or misadjusted main relief valve - Adjust or replace the relief valve
Defective or incorrect setting hydraulic control valve block - Set correctly or replace
Hydraulic cylinder is not working - Inspect the cylinder components for damage or wear and change if required
Broken or loose suction line - Retighten or change
3-point hitch drops slowly or won't drop
Hydraulic control valve is defective or set improper - Replace or adjust properly
Hydraulic cylinder is not working - Check the cylinder components for damage or wear and change if necessary
Hitch cross shaft is damaged - Install a new shaft
The hitch has mechanical faults - Change faulty or worn hitch components
Hitch jerks when lift or lower
Air trapped in the hydraulic system - Check the suction line, pump seals, and fittings
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid
Faulty hydraulic oil pump - Test pump flow rate and replace pump if required
Defective or not adjusted hydraulic control valve - Replace or set correctly
Hydraulic cylinder is faulty - Check the cylinder components for damage or wear and change if necessary

Steering System Troubleshooting
Stiff steering
Steering column is damaged or incorrectly assembled - Steering column must be assembled correctly or changed
Air enters in steering system - Air-bleed steering system
Incorrect toe-in adjustment - Adjust toe-in wheels properly
Tire pressure is improper - Inflate the tires properly
Defective or worn steering valve - Inspect and change as required
Faulty steering box components - Repair power steering box
Relief valve is stuck or faulty - Clean or change the relief valve
Lack of steering fluid - Need to add steering oil
Oil leaks in the steering system - Tighten joints of hydraulic pipes and hoses in steering system
Steering wheel has too much free-play
Steering column coupling or shaft is extremely worn out - Replace defective part
Steering valve is worn or defective - Check and replace as required
Damaged power steering box components - Change defective steering box parts
Defective hydraulic pump - Replace or repair pump
Faulty or worn steering linkage or tie-rod ends - Replace damaged part
Tractor pulls to right or left
Deflated front tyres - Inflate tyres as needed
Incorrect toe-in - Adjust toe-in properly
Faulty or worn steering tie-rod ends or linkage - Change damaged component
Worn steering box parts - Defective power steering box components must be replaced
Worn or defective steering valve - Inspect and change as required
Incorrectly adjusted or worn front hub bearings - Install new bearings or adjust it correctly




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