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John Deere 7810 Troubleshooting

The John Deere 7810 is a 2WD or 4WD row-crop tractor from 7010 series. This model was manufactured between 1997 and 2003. The JD 7810 tractor is powered by 496 cubic (8.1 L) John Deere 6081T 6-cylinder turbocharged direct injection diesel engine. The engine has a cylinder bore of 4.56" (116 mm), piston stroke of 5.06" (129 mm), and rated power of 175 hp (130.5 kW).

The John Deere 7810 is fitted with three types of transmission: 16x16 PowrQuad partial powershift transmission, 20x20 AutoQuad planetary gears transmission, or PowerShift transmission with 19 forward and 7 reverse gears.

The maximum travel speed (forward/reverse): 23.6 mph (38 km/h). The closed center pressure/flow compensated hydraulic system includes a variable displacement axial piston pump with a rated capacity of 26 gpm (98.4 lpm). The main relief pressure is 200 bar (2900 psi). The 2WD models are equipped with 11.00x16 front tires and 18.4R38 rear tires. The 14.9R28 front tires and 18.4R38 rear tires are used for 4WD tractors. The wheel base is 114.4" (2900 mm) for 2-wheel drive models and 110.2" (2790 mm) for 4-wheel drive models.

Engine Troubleshooting
Engine doesn't start or hard to start
Fuel filter clogging - Clean or replace the filter
Closed fuel supply valve - Open supply valve to inject fuel
Air in fuel system - Air-bleed fuel system
Fuel injectors are damaged or dirty - Test fuel injectors and change if necessary
Fuel injection pump is damaged - Repair or install a new fuel pump
Poor engine compression - Inspect cylinder block and change worn parts
Engine stalls while running
Coolant temperature is low - Warm up engine as required
Air trapped in fuel system - Bleed air
Bad fuel injection - Check and adjust
Plugged fuel filter - Replace the filter element
Faulty or dirty injectors - Inspect fuel injectors and replace if necessary
Diesel engine stops after starting
Incorrectly set fuel injection pump timing - Check the fuel injection pump timing setting
Plugged fuel filter - Clean the filter or install new filter element
Clogged or defective injector nozzles - Change or clean injector nozzles
Fuel injection pump is damaged - Replace or repair injection pump
Clogged air cleaner - Install new cleaner element or replace it
Engine stalls when idling
Low idle speed setting is incorrect - Correct the settings
Fuel injection pump failure - Repair or replace injection pump
Fuel injector nozzles are damaged - Install new set of properly balanced nozzles
Valve clearance is out of adjustment - Check and adjust
Engine is overheated
Insufficient coolant fluid - Fill the radiator to the required level. Check radiator and hoses for leaks
Cooling system is dirty or cooling components are failed - Change faulty components or flush the cooling system
Engine oil level low - Fill up the engine oil
Worn fan belt or improper belt tension - Adjust as required or replace belt
Thermostat fault - Check and replace if required
Engine power is too low
Fuel injectors are defective or dirty - Inspect fuel injectors and replace if necessary
Incorrect fuel injection pressure - Repair or replace injection pump
Air filter element clogging - Service or change air filter
Engine oil filter is plugged - Service or change engine oil filter element
Engine is running overloaded - Change to lower gear or reduce load
Incorrect valve clearance - Correct valve clearance needs to be set
Incorrect low idle setting - Normalize low idle speed
Dirty fuel pipes or hoses - Fuel pipes and hoses need to be cleaned
Loss of compression: Valves are faulty or leaking - Replace the valves as required
Engine knocks or noises
Incorrectly set fuel injection pump timing - Check the fuel injection pump timing setting
Clogged or defective injector nozzles - Check and change nozzles as required
Engine oil insufficient - Need to add engine oil
Engine is cold - Warm up engine as required
Worn crankshaft or main bearings - Have bearings or crankshaft replaced
Broken or defective piston rings - Install new piston rings
Loose flywheel bolts - Check flywheel bolts and tighten properly
Diesel engine using too much oil
External oil leaks: Worn gaskets or seals - Worn parts need to be replaced
Crankcase oil too light - Use proper viscosity oil
Worn or broken piston rings - Install new piston rings
Worn valve stems and valve guides - Valves replacement required
Cylinder liners or pistons are scuffed - Inspect liners and pistons, change as necessary

Electrical System Troubleshooting
Battery does not charge
Battery is worn - Battery replacement required
Battery cable harness damage - Check battery cables for damage, change or repair
Battery terminals and cables are corroded or loose - Terminals and cables need to be tightened or cleaned
Damaged belt or incorrectly adjusted belt tension - Replace belt or adjust belt tension correctly
Starter cranks slowly
Low battery voltage - Battery is drained, recharge it
Battery runs out quickly - Service charging system or replace battery
Bad battery electrical wire harness - Check wires for malfunctions, repair or replace
Loose or corroded battery cables and terminals - Terminals and cables need to be tightened or cleaned
Starter does not work
Low battery power - Battery is drained, recharge it
Drained or worn battery - Charge or change the battery
Starter motor is damaged - Starter needs to be replaced
Improperly connected or disconnected wiring harness - Inspect wiring harness and connect properly

Transmission Troubleshooting
Gear shift is hard
Misadjusted or defective clutch - Replace or adjust clutch
Gear shift linkage is stuck or damaged - Replace or repair the shift linkage
Damaged or worn shift forks - Replace the shift forks
Worn gear shift mechanism - Replace worn components
Low transmission oil pressure
Low transmission oil level - Fill up the transmission oil
Transmission fluid filter is dirty (if equipped) - Change or service the transmission fluid filter
Damaged relief valve - Replace relief valve as required
Transmission noises
Bearings are worn or damaged - Change the bearings
Oil level is low - Correct the transmission oil level
Transmission oil contamination - Transmission oil must be changed
Defective gears or incorrect backlash - Replace gears or set backlash correctly
Worn or damaged shift forks - Shift forks need to be replaced
Transmission oil leaking
Seals or gaskets are damaged - Gaskets or seal replacement required
Transmission case is cracked - Replace case or transmission assembly

IVT Transmission Troubleshooting
IVT transmission makes noise
Dirty transmission oil or insufficient oil level - Top up to proper level or change oil
Defective or out of adjustment speed control rod linkage - Replace rod linkage or adjust correctly
Relief valve failure - Replace the valve
Excessive transmission load - Reduce the load is required
Defective or worn components of IVT transmission - After disassembling and checking, change defective parts
Hot transmission oil
Not enough fluid in transmission - Fill the transmission housing with fluid
Transmission oil filter is plugged - Change or clean the transmission oil filter
Clogged or damaged cooling components - Inspect all cooling components and service or replace if necessary
Transmission overloaded - Reduce loading
Lack of power
Low transmission oil level - Fill up the transmission oil
Insufficient charge pressure - Check charge pressure
Relief valve is worn or defective - Replace valve as required
External oil leaks
Worn gaskets or seals - Install new components
Internal transmission case pressure is too high - Replace defective components
Plugged oil drain pipe - Service or change drain pipe

Hydraulics Troubleshooting
Hydraulic system overheating
Incorrect hydraulic system pressure setting - Change the pressure settings
Main relief valve is faulty or misadjusted - Set up or change the relief valve
Hydraulic fluid contamination - Change hydraulic fluid
Air enters in hydraulic system - Inspect the suction pipe, fittings, and pump seals
Hydraulic fluid pressure is insufficient
Hydraulic oil level is low - Add oil to the hydraulic system
Hydraulic oil filter is dirty - Change the hydraulic filter element or service if required
Hydraulic pump is defective - Test the pump performance and change pump if required
Hydraulic control valve block is not set properly or defective - Change or adjust properly
Broken hydraulic cylinder - Inspect cylinder components for wear or damage and change if required
Leakage in hydraulic lines - Detect leaks in the system and fix it
Three-point hitch lifting is too slow or cannot be lifted
Lack of hydraulic fluid - Check and refill the hydraulic fluid
Cold oil in hydraulic system - Wait for oil to warm up
Hydraulic fluid filter element is dirty - Clean or replace the hydraulic filter
Hydraulic pump failure - Check the pump performance and replace it if required
Defective or misadjusted main relief valve - Adjust relief valve or change if required
Hydraulic control valve block is faulty or out of adjustment - Replace or set properly
Hydraulic cylinder is faulty - Check cylinder parts for wear or damage and replace if necessary
Disconnected or damaged suction pipe - Connect or replace
Hitch not dropping or hitch drops slowly
Faulty or incorrect setting hydraulic control valve - Adjust correctly or replace
Broken hydraulic cylinder - Check the hydraulic cylinder parts for damage or wear and replace if necessary
Damaged lift arm shaft - Install a new shaft
The hitch has any internal mechanical damage - Replace defective or worn hitch components
3-point hitch lift or lower is jerky
Air enters in hydraulic system - Check the suction line, pump seals, and fittings
Hydraulic oil is dirty - Hydraulic oil change required
Hydraulic pump malfunction - Test pump flow rate and replace pump if required
Hydraulic control valve is faulty or out of adjustment - Adjust correctly or replace
Defective hydraulic cylinder - Check cylinder components for damage or wear and change if necessary

Steering System Troubleshooting
Heavy steering
Steering column is worn or incorrectly mounted - Change the steering column or mount it correctly
Air enters in steering system - Need to bleed air
Incorrect toe-in adjustment - Adjust toe-in wheels properly
Tires are improperly inflated - Inflate as necessary
Worn steering pump - Install a new steering pump
Faulty or worn steering control valve - Repair or replace the steering valve
Relief valve seizing or failure - Inspect relief valve and replace if necessary
Steering oil level low - Add oil to steering system
Oil leaks in the steering system - Tighten the steering hose and line joints
Steering wheel free play is excessive
Steering column shaft or coupling has maximum wear - Change defective part
Defective or worn steering control valve - Repair or replace the steering valve
Steering pump is faulty - Repair or change steering pump
Worn or faulty steering tie-rod ends or linkage - Change damaged part
Tractor pulls to left or right
Tire pressure is low - Tires need to be inflated
Improper toe-in adjustment - Check and adjust toe-in
Steering tie-rod ends or linkage are defective - Change damaged component
Steering control valve has wear or malfunction - Repair or replace the steering valve
Faulty steering cylinder - Repair or change steering cylinder
Incorrectly adjusted or damaged front hub bearings - Change or adjust the bearings properly




Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294