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Home / Farm Tractors / John Deere Tractors / JD 1750

John Deere 1750 Troubleshooting

The John Deere 1750 is a 2WD or 4WD utility tractor. This model was manufactured from 1987 to 1994. The John Deere 1750 tractor is powered by 179.4 cubic inches (2.9L) 4-cycle, three-cylinder liquid cooled diesel engine with maximum output power of 50.1 hp (37.3 kw) and 185 Nm (136 lb-ft) of max torque at 1300 rpm.

The John Deere 1750 is fitted with three transmission options: 8x4 synchromesh gear transmission, 16x8 two-speed powershift transmission, or 12x8 creeper transmission.

Max. forward speed - 18.6 mph (30 km/h), maximum reverse speed - 7.8 mph (12.5 km/h). The closed center hydraulic system includes a variable displacement pump with a flow rate of 11.6 gpm (43.9 lpm). The hydraulic pressure is 2750 psi (190 bar). The 4-wheel drive models are equipped with 11.2x24 front tyres and 14.9x28 rear tyres. The 6.50x16 front tyres and 12.4x32 rear tyres fit 2-wheel drive tractors. The wheel base is 80.7 in (2040 mm).

Engine Troubleshooting
Engine won't start or difficult to start
Fuel filter clogging - Replace filter element
Fuel is not supplied from the tank to the system - Check the fuel shut-off valve
Air in fuel lines - Bleed fuel lines
Fuel injectors are clogged or faulty - Inspect fuel injectors and replace if necessary
Fuel injection pump is not working correctly - Repair or install a new fuel pump
Low engine compression - Inspect cylinder block and replace worn components
Engine shuts off unexpectedly during operation
Engine is not preheated - Warm up engine as required
Air in fuel pipes - Bleed fuel pipes
Improper fuel injection - Fuel injection settings required
Clogged fuel filter element - Change filter element
Faulty or dirty injectors - Service or change fuel injectors
Engine starts but immediately stops
Fuel injection pump timing is incorrect - Adjust injection timing
Fuel filter plugging - Clean or replace the filter
Faulty fuel injector nozzles - Check and change nozzles as required
Fuel injection pump malfunction - Install a new fuel pump or repair
Air cleaner element clogging - Clean or replace the air cleaner element
Engine stalls while idling
Incorrect low idle speed adjustment - Correct the settings
Fuel injection pump is not operating properly - Repair or install a new fuel pump
Dirty or defective injector nozzles - Change injector nozzles
The valve clearance is not adjusted - Have it adjusted
Engine overheats
Lack of engine coolant - The cooling system needs to be refilled. Check system for leaks
Cooling system components are failed or system is clogged - Service the cooling system or change faulty parts
Engine oil level low - Fill up the oil to required level
Fan belt is damaged or belt tension is incorrect - Adjust as required or change belt
Defective or wrong type of thermostat - Check thermostat, replace if necessary
Poor engine power
Faulty or dirty injectors - Change fuel injectors
Uneven fuel injection pressure - Repair or replace injection pump
Air filter clogging - Air filter maintenance required
Plugged engine oil filter - Change or service engine oil filter
Engine overloaded - Load reducing is recommended
Incorrect valve clearance - Adjust valve clearance
Low idle speed setting is not correct - Adjustment required
Dirt in the fuel pipes or hoses - Service fuel hoses and pipes
Loss of compression: Valves are damaged or leaking - Have valves replaced
Engine knocks or noises
Incorrectly set fuel injection pump timing - Adjust injection timing
Clogged or damaged injector nozzles - Service or replace injector nozzles
Not enough engine oil - Check and refill engine oil
Engine is not preheated - Normalize the temperature by warming up the engine
Crankshaft or main bearings failure - Repair or replace defective parts
Broken or defective piston rings - Install new piston rings
Loose flywheel screws - Inspect the flywheel screws and tighten securely
Engine using too much oil
Oil leakage: Damaged gaskets or seals - Defective components must be replaced
Crankcase oil too light - Fill up with the proper oil viscosity
Seized or wear piston rings - Install new piston rings
Damaged valve guides or valve stems - Need to replace the valves
Cylinder liners or pistons are worn - Inspect pistons and liners, fit new components as necessary


Electrical System Troubleshooting
Battery does not charge
Defective battery - Battery change required
Damaged battery cable harness - Check electrical cables for damage, repair or replace
Battery terminals and cables are loose or corroded - Service or tighten battery cables and terminals
Damaged belt or incorrectly adjusted belt tension - Adjust belt tension correctly or change belt
Starter turning slow
Battery power is low - Battery is drained, charge it
Battery does not hold charge - Battery needs to be serviced or replaced
Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair
Loose or corroded cables and terminals - Cables and terminals must be tightened or cleaned
Starter doesn't crank
Low battery capacity - Battery needs to be recharged
Drained or faulty battery - Charge or replace the battery
Starter motor is defective - Repair or install a new starter
Disconnected or incorrectly connected cables - Inspect battery cables and connect correctly

Transmission Troubleshooting
Gear hard to shift
Worn or incorrectly adjusted clutch - Replace or adjust clutch
Gear shift linkage is loose or broken - Replace or repair the shift linkage
Worn or damaged shift forks - Replace the shift forks
Gear shifting mechanism is worn - Change worn components
Transmission oil pressure is insufficient
Oil level is low - Checking transmission oil level and add if necessary
Transmission fluid filter is dirty (if equipped) - Change or clean the transmission fluid filter
Damaged relief valve - Replace valve as required
Transmission is making noise
Cracked or worn bearings - Replace faulty bearings
Oil level is insufficient - Correct the transmission oil level
Contaminated transmission oil - Transmission oil must be changed
Defective gears or incorrect backlash - Set backlash correctly or change the gears
Bent or worn shift forks - Replace defective shift forks
Transmission fluid leaking
Broken gaskets or seals - Install new gaskets or seal
Transmission case is cracked - Replace case or transmission assembly


Hydraulics Troubleshooting
Hydraulic system overheats
Hydraulic system pressure is unadjusted - Adjust the pressure as required
Main relief valve incorrect adjustment or failure - Set up or change the relief valve
Contaminated hydraulic fluid - Change hydraulic fluid
Air leaks in hydraulic system - Check the pump seals, suction pipe, and fittings
Hydraulic oil pressure is insufficient
Not enough hydraulic oil in the system - Fill the hydraulic system with oil
Hydraulic oil filter is dirty - Change the hydraulic filter element or service if required
Hydraulic pump is defective - Flow-rate hydraulic pump and replace pump if necessary
Damaged or incorrect adjusted hydraulic control valve - Change or adjust properly
Hydraulic cylinder is not working - Check the cylinder components for damage or wear and change if necessary
Hydraulic pipes are leaking - Inspect hydraulic system for leaks and repair it
Hitch cannot be lifted or lifting is too slow
Hydraulic oil level is low - Fill the hydraulic system with oil
Hydraulic oil is too cold - Allow oil to warm
Hydraulic fluid filter is dirty - Clean the hydraulic filter or install new filter element
Hydraulic pump is defective - Flow-rate pump and change pump if necessary
Faulty or incorrectly adjusted main relief valve - Adjust relief valve or change if required
Defective or not adjusted hydraulic control valve - Change or adjust correctly
Hydraulic cylinder is defective - Check the cylinder parts for damage or wear and replace if necessary
Suction pipe is damaged or loose - Repair or change
Hitch drops too slowly or can't drop
Hydraulic spool valve is faulty or out of adjustment - Change or set correctly
Hydraulic cylinder is not working - Check cylinder parts for wear or damage and replace if necessary
Lift arm shaft is worn - Change the shaft
Internal mechanical malfunction with hitch - Change damaged or worn hitch parts
3-point hitch lifting or lowering is jerky
Air in hydraulic system - Inspect the suction line, pump seals, and fittings
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid
Hydraulic pump is faulty - Check pump flow and change pump if necessary
Hydraulic spool valve is faulty or out of adjustment - Change or adjust properly
Faulty hydraulic cylinder - Check cylinder parts for wear or damage and replace if necessary

Steering System Troubleshooting
Steering wheel turns hard
Steering column is broken or incorrectly fitted - Steering column needs to be refit correctly or replaced
Aeration in steering system - Need to bleed air
Not adjusted toe-in - Adjust toe-in properly
Improper tire pressure - Check the pressure and inflate tires as required
Damaged hydraulic steering pump - Install a new steering pump
Worn or defective hydrostatic steering unit - Change or repair steering unit if required
Relief valve sticking or failure - Service or replace the relief valve
Steering fluid level is low - Check fluid level and add steering fluid as required
Oil leaks in the steering system - Retighten steering hose and pipe connections
Excessive steering wheel free play
Steering column coupling or shaft is extremely worn out - Replace faulty part
Hydrostatic steering unit is defective or worn - Inspect and replace as required
Damaged hydraulic steering pump - Repair or change steering pump
Faulty or worn steering linkage or tie-rod ends - Change failed component
Front wheels wander to right or left
Tires are incorrectly inflated - Inflate as required
Toe-in adjustment is incorrect - Adjust toe-in correctly
Steering linkage or tie-rod ends are defective - Change damaged component
Hydrostatic steering unit is damaged or worn - Inspect and replace as required
Steering cylinder malfunction - Repair or replace steering cylinder
Front hub bearings are improperly adjusted or defective - Replace or adjust the bearings correctly

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