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John Deere 7710 Troubleshooting

The John Deere 7710 row-crop tractor was manufactured from 1997 to 2003. The JD 7710 tractor is powered by John Deere 6081T 4-stroke 6-cylinder direct injection turbocharged diesel engine with a maximum output power of 155 hp (115.6 kW) and 708 Nm (522 lb-ft) of peak torque at 1400 rev/min.

The John Deere 7710 is fitted with a 3 types of transmission. 1st type: 16x16 PowrQuad partial powershift transmission. 2nd type: 19x7 PowerShift transmission. 3rd type: 20x20 AutoQuad transmission. Maximum travel speed (forward/reverse): 23.6 mph (38 km/h).

The closed-center, pressure and flow compensated hydraulic system used a variable displacement axial-piston pump with a flow of 26 gal/min (98.4 l/min). The hydraulic pressure is 200 bar (2900 psi). The 2-wheel drive models are equipped with 11.0x16 front tires and 18.4x38 rear tires. The 14.9x28 front tires and 18.4x38 rear tires are used for tractors with 4-wheel drive. The wheel base is 114.4" (2900 mm) for 4x2 (2WD) models and 110.2" (2790 mm) for 4x4 (4WD) models.

Engine Troubleshooting
Engine will not start or starts up hard
Fuel filter plugging - Install new filter element
The fuel shut-off valve is closed - Open fuel shut-off valve
Air trapped in fuel system - Bleed air
Dirty or damaged injectors - Service or change fuel injectors
Fuel injection pump is defective - Repair or install new pump
Low compression - Check cylinder block and change faulty parts
Diesel shuts off during operation
Engine is not fully warmed up - Normalize the temperature by warming up the engine
Air in fuel system - Air-bleed fuel system
Fuel injection failed - Use correct settings
Fuel filter plugging - Service the filter
Clogged or damaged injectors - Change fuel injectors
Engine starts and then stalls
Fuel injection pump timing is incorrect - Adjust injection timing
Fuel filter plugging - Service or replace the filter
Fuel injector nozzles are damaged - Inspect injector nozzles and change if required
Fuel injection pump failure - Repair or install new pump
Air cleaner element is dirty - Clean or replace the air cleaner element
Engine stalls while idling
Low idle speed adjustment is incorrect - Adjustment required
Fuel injection pump is damaged - Repair or install a new fuel pump
Fuel injector nozzles are damaged or dirty - Change injector nozzles
Valve clearance is out of adjustment - Need to adjust valve clearance
Engine overheats
Not enough coolant - Coolant needs to be refilled. Any leaks must be repaired
Cooling system components are worn or system is clogged - Flush cooling system or replace faulty parts
Not enough engine oil - Check and refill engine oil
Fan belt is worn or belt tension is improper - Adjust correctly or change the belt
Defective or wrong type of thermostat - Replace the thermostat
Reduced engine power
Faulty or dirty injectors - Change fuel injectors
Insufficient fuel injection pressure - Check the fuel injection pressure and adjust if necessary
Clogged air filter element - Replace or service air filter element
Dirty oil filter - Change or service engine oil filter
Engine overload - Reduce engine load
The valve clearance is not adjusted - Adjust to proper valve clearance
Low idle speed setting is not correct - Test and adjust
Restricted fuel hoses or pipes - Service fuel hoses and pipes
Engine losing compression: Leaking or faulty valves - Valve replacement required
Engine noise or knocking
Unadjusted fuel injection pump timing - Check and correct adjustments
Clogged or damaged injector nozzles - Test injector nozzles and replace as required
Lack of engine oil - Check and refill engine oil
Low coolant temperature - Warm up to required temperature
Worn main bearings or crankshaft - Replace crankshaft or bearings
Piston rings are worn or broken - Replace the piston rings as required
Loose flywheel screws - Check the flywheel screws and tighten as required
Diesel engine using too much oil
Oil leaking: Damaged gaskets or seals - Defective components must be replaced
Incorrect oil viscosity - Use oil of proper viscosity
Stuck or defective piston rings - Piston rings need to be replaced
Valve guides and stems are worn - Valves need to be changed
Worn pistons or cylinder liners - Inspect pistons and liners, change as required

Electrical System Troubleshooting
Battery will not charge
Bad cell in battery - Replace the battery
Bad battery electrical wire harness - Check wires for malfunctions, repair or replace
Battery cables and terminals are corroded or loose - Clean or tighten cables and terminals
Belt is worn or belt tension is incorrectly adjusted - Change belt or correctly adjust belt tension
Starter motor cranks slow
Low battery output - Charge the battery
Battery discharges quickly - Service charging system or install new battery
Damaged battery cable harness - Check electrical cables for damage, repair or replace
Corroded or loose terminals and cables - Cables and terminals must be tightened or cleaned
Starter is not working
Battery capacity is low - Charge the battery
Discharged or faulty battery - Replace or charge as required
Starter motor failure - Starter should be changed
Wiring is improperly connected or disconnected - Need to reconnect the wiring properly

Transmission Troubleshooting
Hard shifts
Clutch is unadjusted or worn - Adjust correctly or replace
Loose or broken gear shift linkage - Change or repair shift linkage
Worn or damaged shift forks - Change defective shift forks
Defective gearshift mechanism - Replace defective components
Transmission fluid pressure is insufficient
Lack of transmission fluid supply - Fill up the transmission fluid
Transmission fluid filter is plugged (if fitted) - Clean or replace the transmission fluid filter
Relief valve is faulty - Install a new relief valve
Excessive transmission noise
Damaged or worn bearings - Faulty bearings should be changed
Not enough fluid in transmission - Fill up the transmission fluid
Dirty transmission fluid - Change transmission fluid
Gears are defective or backlash is incorrect - Change worn gears or set backlash correctly
Shift forks are damaged or worn - Change the shift forks
Transmission fluid leakage
Worn gaskets or seals - Install new components
Transmission housing is cracked - Replace housing or transmission assembly

IVT Transmission Troubleshooting
IVT transmission is excessively noisy
Contaminated oil or low oil level - Fill the transmission with fresh oil or add transmission oil to the correct level
Defective or out of adjustment speed control rod linkage - Adjust or change rod linkage
Relief valve is faulty - Install a new valve
Transmission is under excessive load - The load should be reduced
Worn or damaged transmission components - Change or repair damaged parts
Transmission fluid overheated
Insufficient oil supply - Checking transmission oil level and add if necessary
Transmission fluid filter is dirty - Change or clean the transmission fluid filter
Cooling components are defective or plugged - Check all cooling components and change or clean if required
Transmission overload - Reduce transmission load
Low power
Lack of transmission fluid supply - Fill up the transmission fluid
Low charge pressure - Check charge pressure
Worn or defective relief valve - Change the valve
External fluid leaks
Broken gaskets or seals - Change defective seal or gaskets
High pressure inside the transmission housing - Repair or replace worn parts
Plugged oil drain pipe - Service or change drain pipe

Hydraulics Troubleshooting
Hydraulic system overheats
The system pressure has not been corrected - Make the correct settings
Defective or misadjusted main relief valve - Adjust or replace the relief valve
Hydraulic oil contamination - Change the oil
Hydraulic system sucks air - Check the pump seals, suction pipe, and fittings
Hydraulic fluid pressure too low
Lack of hydraulic fluid - Need to add fluid
Hydraulic fluid filter element clogging - Install a new hydraulic filter element
Defective hydraulic pump - Check pump performance and change it if necessary
Hydraulic control valve block is faulty or out of adjustment - Adjust correctly or change
Hydraulic cylinder is broken - Inspect cylinder parts for wear or damage and replace if required
Leakage in hydraulic pipes - Inspect hydraulic system for leaks and repair it
3-point hitch raises slowly or won't raise
Hydraulic fluid level is low - Add fluid to the hydraulic system
Cold fluid in hydraulic system - Wait for fluid to warm up
Hydraulic oil filter element is dirty - Hydraulic filter maintenance required
Hydraulic pump is faulty - Test the pump performance and change pump if required
Main relief valve is defective or unadjusted - Adjust relief valve or change if required
Hydraulic spool valve is defective or set improper - Change or set correctly
Faulty hydraulic cylinder - Check cylinder components for damage or wear and change if necessary
Damaged or loose suction line - Tighten or change
3-point hitch fails to drop or drops slowly
Hydraulic spool valve is defective or set improper - Set properly or replace
Hydraulic cylinder failure - Inspect the hydraulic cylinder components for damage or wear and change if required
Damaged hitch cross shaft - Install a new shaft
The hitch has mechanical faults - Replace worn or damaged hitch parts
Hitch lower or lift is jerky
Air trapped in the hydraulic system - Check the pump seals, suction pipe, and fittings
Hydraulic fluid contamination - Change hydraulic fluid
Hydraulic pump not working - Test pump performance and replace pump if necessary
Faulty or incorrect setting hydraulic spool valve - Replace or set correctly
Hydraulic cylinder failure - Check cylinder components for wear or damage and change if necessary

Steering System Troubleshooting
Steering wheel is difficult to turn
Steering column is defective or improperly assembled - Change steering column or assemble properly
Aeration in steering system - Air-bleed steering system
Incorrect toe-in - Adjust toe-in correctly
Low tire pressure - Inflate the tires
Faulty steering pump - Repair or replace steering pump
Damaged or worn steering control valve - Repair or change the steering valve
Relief valve sticking or malfunction - Check relief valve and change if required
Steering fluid level is low - Check fluid level and add steering fluid as required
Oil leakage in the steering system - Retighten joints of the hydraulic steering pipes and hoses
Steering wheel free play is excessive
Worn steering column coupling or shaft - Change faulty part
Faulty or worn steering control valve - Replace or repair steering valve as required
Hydraulic steering pump is defective - Repair or replace steering pump
Steering tie-rod ends or linkage are worn - Replace damaged part
Tractor pulls to left or right
Tires are deflated - Need to inflate tires
Incorrect toe-in - Adjust toe-in properly
Faulty or worn steering linkage or tie-rod ends - Replace failed part
Defective or worn steering control valve - Inspect and change as required
Steering cylinder is worn - Change or repair hydraulic steering cylinder
Defective or improperly adjusted front hub bearings - Install new bearings or adjust it correctly




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