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Home / Farm Tractors / John Deere Tractors / JD 1050

John Deere 1050 Troubleshooting

The John Deere 1050 is a 2WD or 4WD compact utility tractor. This model was manufactured from 1980 to 1989. The John Deere 1050 is equipped with Yanmar 3T90-J four-stroke 3-cylinder direct injection water-cooled diesel engine with a maximum power of 37 hp (27.6 kW), and sliding gear transmission with dry clutch and 8x2 gearbox.

Max. travel speed (forward/reverse): 12.5 mph (20.1 km/h) and 5.7 mph (9.2 km/h). The open center hydraulic system includes a gear pump with a rated fluid flow of 7.5 gpm (28.4 lpm). The hydraulic pressure is 2030 psi (140 bar).

The JD 1050 was equipped with a manual steering system, differential mechanical internal expanding shoe brakes, 6.00x16 front tires, and 13.6x28 rear tires. The wheel base is 68.9" (1750 mm). Compatible attachments for the tractor: a 72" mid-mount 3-blade mower deck, 72" front-mount blade, John Deere 80 loader with a maximum lift height of 93.5" (2370 mm), and John Deere 8A backhoe with 2-ft flat digging depth of 102" (2590 mm).

Engine Troubleshooting
Engine is not starting or hard starting
Dirty fuel filter element - Clean or replace the filter
Closed fuel cock - Open fuel on-off cock to inject fuel
Fuel-line is leaking air - Retighten clamps, replace defective pipes
Clogged or damaged injectors - Test fuel injectors and change if necessary
Defective fuel injection pump - Replace or rebuild injection pump
Poor cylinder compression - Inspect cylinder block and change worn parts
Engine stalls during operation
Engine not warmed up - Engine is not warmed up to the required temperature
Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system
Bad fuel injection - Check and adjust
Fuel filter is clogged - Replace filter element
Fuel injectors are damaged or dirty - Check fuel injectors and replace if required
Diesel starts but then shuts off
Incorrect setting of fuel injection pump timing - Adjust injection timing
Fuel filter clogging - Replace the filter element
Fuel injector nozzles are damaged or dirty - Install new set of properly balanced nozzles
Fuel injection pump is not working correctly - Replacement or repair required
Air cleaner clogging - Air cleaner maintenance required
Engine stalling at idle
Low idle speed adjustment is incorrect - Normalize low idle speed
Fuel injection pump is damaged - Replace injection pump or repair it
Fuel injector nozzles are dirty - Check and change nozzles as required
Incorrect valve clearance - Adjustment procedure required
Engine overheating
Engine coolant is insufficient - The cooling system needs to be refilled. Check system for leaks
Cooling system is clogged or cooling parts are defective - Replace faulty parts or flush the cooling system
Not enough engine oil - Fill up the oil to required level
Fan belt tension is improper or belt is defective - Adjust correctly or install new belt
Thermostat fault - Check thermostat, replace if necessary
Engine loses power
Fuel injectors are defective or dirty - Test fuel injectors and change if necessary
Fuel injection pressure is incorrect - Test fuel injection pressure and adjust it correctly
Clogged air filter element - Change or replace air filter element
Oil filter is clogged - Clean or replace engine oil filter element
Engine overloaded - Change to lower gear or reduce load
Valve out of adjustment - Check and adjust as required
Incorrectly adjusted low idle speed - Adjust the low idle speed
Dirty fuel pipes or hoses - Clean fuel system hoses and pipes
Engine compression too low: Intake or exhaust valves are damaged - Install new valves
Engine knocking sound or abnormal noise
Fuel injection pump timing is incorrect - Fuel pump timing settings need to be corrected
Fuel injector nozzles are clogged or faulty - Check and change nozzles as required
Not enough engine oil - Fill up the engine oil
Coolant temperature is low - Engine is not warmed up to the required temperature
Main bearings or crankshaft wear - Repair or replace defective parts
Broken or defective piston rings - Install new piston rings
Flywheel bolts are loose - Bolts need to be tightened
Engine consuming too much oil
Oil leaks: Worn gaskets or seals - Install new components
Oil viscosity is incorrect - Use oil of proper viscosity
Seized or wear piston rings - Change the piston rings as required
Worn valve stems and valve guides - Replace the valves
Scored cylinder liners or pistons - Inspect pistons and liners, replace as required


Electrical System Troubleshooting
Battery is not charging
Battery bad cell - Install a new battery
Bad battery wiring harness - Inspect wiring for malfunctions, replace or repair
Battery terminals and cables are corroded or loose - Service or tighten battery cables and terminals
Belt is damaged or belt tension is incorrectly adjusted - Adjust belt tension as required or change belt
Starter turning slow
Low battery voltage - Charge the battery
Battery is not holding charge - Service or replace the battery
Battery electrical wire harness failure - Inspect wires for defects, change or repair
Corroded or loose cables and terminals - Clean or tighten cables and terminals
Starter will not work
Battery voltage is low - Recharge the battery
Discharged or faulty battery - Change or recharge battery
Defective starter motor - Starter needs to be changed
Cables harness is improperly connected or disconnected - Inspect cables harness and reconnect it properly

Transmission Troubleshooting
Difficult to shift gears
Failure or improper clutch adjustment - Adjust or install new clutch
Damaged or loose gear shift linkage - Change defective shift linkage
Shift forks are damaged or worn - Replace defective shift forks
Worn gear shift mechanism - Replace worn components
Transmission noises
Broken or worn bearings - Faulty bearings should be changed
Low transmission oil level - Check transmission oil level and add oil as required
Contaminated transmission fluid - Fill up with fresh transmission fluid
Incorrect backlash or gears are defective - Change the gears or adjust backlash correctly
Worn or damaged shift forks - Change the shift forks
External fluid leaks
Gaskets or seals are defective Change defective seal or gaskets
Cracked transmission case - Install a new transmission case


Hydraulics Troubleshooting
Hydraulic system overheats
Incorrect hydraulic pressure adjustments - Adjust correctly
Main relief valve incorrect adjustment or failure - Replace or set up the relief valve
Hydraulic fluid contamination - Change hydraulic fluid
Air trapped in the hydraulic system - Check the suction pipe, fittings, and pump seals
Insufficient hydraulic oil pressure
Hydraulic oil level is low - Fill the hydraulic system with oil
Hydraulic oil filter element clogging - Change hydraulic filter element or clean if necessary
Faulty hydraulic oil pump - Check the pump capacity and replace pump if required
Hydraulic control valve block is not set properly or defective - Change or set correctly
Hydraulic cylinder is broken - Check cylinder components for wear or damage and change if necessary
Leakage in hydraulic lines - Detect leaks in hydraulic system and repair it
Hitch cannot be raised or raising is too slowly
Hydraulic fluid level is insufficient - Need to add fluid
Hydraulic fluid is too cold - Allow fluid to warm
Hydraulic fluid filter element clogging - Clean or change hydraulic filter
Faulty hydraulic oil pump - Test the pump performance and change pump if required
Main relief valve is faulty or misadjusted - Adjust or replace the relief valve
Hydraulic control valve is faulty or out of adjustment - Replace or set correctly
Hydraulic cylinder is faulty - Check cylinder components for wear or damage and change if necessary
Suction line is damaged or disconnected - Connect or replace
3-point hitch won't drop or drops slowly
Hydraulic control valve is faulty or out of adjustment - Adjust correctly or change
Defective hydraulic cylinder - Inspect cylinder parts for wear or damage and replace if required
Hitch rock shaft is worn Install a new shaft
Defective mechanical parts of the hitch - Replace worn or defective hitch parts
Hitch jerks when lower or lift
Air leaks in hydraulic system - Inspect the suction line, pump seals, and fittings
Hydraulic fluid is dirty - Hydraulic fluid change required
Hydraulic pump malfunction - Test pump performance and replace pump if necessary
Defective or not adjusted hydraulic spool valve - Set correctly or replace
Hydraulic cylinder is defective - Inspect the cylinder components for damage or wear and change if required

Steering System Troubleshooting
Hard Steering
Steering knuckle or steering column is stuck - Inspect steering column and knuckle, replace worn parts as required
Steering gearbox components are worn - Replace defective components of steering gearbox
Faulty drag link or tie rod - Replace or repair
Insufficient lubrication in steering box - Need to lubricate the gearbox
Not adjusted toe-in alignment - Check and adjust toe-in
Tires are not correctly inflated - Inflate tires as necessary
Excessive steering wheel free play
Steering column bearing or shaft is worn - Change faulty parts
Steering linkage assembly is worn or loose - Repair or replace steering linkage
Worn steering gearbox bearings - Replace the bearings
Front wheel hub bearings or steering knuckles are worn - Change hub bearings or knuckles
Damaged or worn steering tie-rod ends - Change faulty part
Tractor pulls to right or left
Worn or loose steering linkage assembly - Repair or replace steering linkage
Defective steering knuckle bushing - Replace knuckle bushing
Uneven tire pressure - Inflate the tires properly
Toe-in adjustment is incorrect - Adjust toe-in correctly

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