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John Deere 3650 Troubleshooting

The John Deere 3650 utility tractor was manufactured from 1986 to 1993. The components of JD 3650 powerline system: John Deere 6359 TL 4-stroke six-cylinder turbocharged diesel engine and Power Synchron partial power shift transmission with 16 forward and 8 reverse gears.

A 359 cubic inches engine power rating is 114 Hp (85,3 kW) at 2400 rpm. Max. forward speed - 18,6 mph (30 kph), max. reverse speed - 8,5 mph (13,7 kph). The closed center constant pressure hydraulic system used a piston pump with rated fluid flow of 11,6 gpm (44 lpm).

The hydraulic system pressure is 2700 psi (186 bar). The four-wheel drive John Deere 3650 tractor is equipped with 16.9x24 front tyres and 520/70x38 rear tyres. The 4WD wheelbase is 101,8 inches (2580 mm).

Engine Troubleshooting
Diesel won't start or hard to start
Clogged fuel filter element - Change the filter element
Closed fuel cock - Open fuel on-off cock to inject fuel
Fuel lines leaking air - Tighten clamps, change faulty pipes
Dirty or faulty injectors - Service or change fuel injectors
Fuel injection pump damage - Install a new pump or rebuild
Poor compression - Check and change damaged parts
Engine stalls while running
Engine has not warmed up to the recommended temperature - Warm up the engine
Air trapped in fuel system - Bleed air
Uneven fuel injections - Repair or adjustment
Fuel filter is clogged - Filter maintenance required
Fuel injectors are defective or dirty - Inspect fuel injectors and replace if necessary
Diesel starts and immediately shuts off
Fuel injection pump timing is incorrect - Repair or replace fuel injection pump
Clogged fuel filter element - Replace filter element
Fuel injector nozzles are clogged or faulty - Test injector nozzles and replace as required
Faulty fuel injection pump - Change or repair the pump
Air cleaner element clogging - Change or replace air cleaner element
Engine stops at idle
Too low idle RPM - Test and adjust
Fuel injection pump is faulty - Replace injection pump or repair it
Fuel injector nozzles are dirty or defective - Service or replace injector nozzles
Improper valve clearance - Check and adjust
Engine overheats
Lack of coolant in cooling system - Fill the cooling system. Check system for leaks
Cooling system parts are defective or system is clogged - Change faulty components or service cooling system
Low engine oil level - Fill up the engine oil
Fan belt tension is improper or belt is defective - Adjust correctly or replace the belt
Thermostat malfunction - Check thermostat, replace if necessary
Engine lacks power
Fuel injectors are defective or dirty - Test fuel injectors and change if necessary
Improper fuel injection pressure - Adjust pressure to proper level
Air filter element is dirty - Replace or service air filter element
Dirty oil filter - Clean or replace engine oil filter element
Engine is overloaded - Change to lower gear or reduce load
Valve clearance is not correct - Correct valve clearance needs to be set
Low idle speed set incorrectly - Correct the settings
Restricted fuel pipes or hoses - Service fuel pipes and hoses
Loss of compression: Leaking or faulty valves - Change the valves
Abnormal engine knocking or noise
Fuel injection pump timing is incorrect - Adjust the fuel injection pump timing correctly
Fuel injector nozzles are clogged or faulty - Test injector nozzles and replace as required
Engine oil level is insufficient - Need to add engine oil
Engine is cold - Warm up the engine
Main bearings or crankshaft wear - Have bearings or crankshaft replaced
Piston rings are worn or broken - Replace the piston rings as required
Flywheel bolts are loose - Bolts need to be tightened
Diesel engine consuming too much oil
Oil leaks: Worn gaskets or seals - Install new components
Oil viscosity is wrong - Use oil of correct viscosity
Piston rings are defective or worn - Have piston rings replaced
Valve stems or guides are damaged - Replace the valves
Scored cylinder liners or pistons - Check liners and pistons, install new components as required

Electrical System Troubleshooting
Battery is not charging
Battery bad cell - Battery change required
Bad battery wiring harness - Inspect wiring for malfunctions, replace or repair
Loose or corroded cables and terminals - Clean or tighten cables and terminals
Improper belt tension adjustment or damaged belt - Adjust belt tension properly or change belt
Starter turning slow
Low battery capacity - Battery is drained, charge it
Battery runs out quickly - Service battery or change it
Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair
Battery cables and terminals are corroded or loose - Terminals and cables need to be tightened or cleaned
Starter motor won't turn
Low battery output voltage - Low battery charging, charge as required
Drained or worn battery - Charge or change the battery
Faulty starter motor - Starter should be changed
Incorrectly connected or disconnected wires - Check battery wires and connect correctly

Transmission Troubleshooting
Hard shifting
Clutch is not adjusted or faulty - Adjust clutch or replace if required
Gear shift linkage is damaged or loose - Repair or change shift linkage
Shift forks are damaged or worn - Change the shift forks
Faulty gear shifting mechanism - Faulty parts must be changed
Transmission oil pressure is insufficient
Insufficient fluid supply - Fill system with correct transmission fluid level
Transmission oil filter clogging (if fitted) - Change or service the transmission oil filter
Relief valve sticking - Install a new valve
Transmission is making noise
Bearings are worn or broken - Faulty bearings should be replaced
Fluid level is low - Check and refill the transmission fluid
Dirty transmission oil - Transmission oil must be changed
Incorrect backlash or gears are defective - Set backlash properly or change the gears
Shift forks are worn or damaged - Shift forks need to be changed
External oil leaks
Gaskets or seals are broken - Replace worn gaskets or seal
Transmission housing is cracked - Replace housing or transmission assembly

Hydraulics Troubleshooting
Hydraulic system is too hot
Hydraulic system pressure is incorrect - Hydraulic pressure needs to be set correctly
Main relief valve is defective or unadjusted - Adjust or change relief valve
Dirty hydraulic oil - The oil must be changed
Air enters in hydraulic system - Inspect the suction line, pump seals, and fittings
Low hydraulic fluid pressure
Lack of hydraulic oil - Check oil level and add hydraulic oil as required
Hydraulic oil filter element is dirty - Clean the hydraulic filter element or replace if necessary
Defective hydraulic pump - Check pump capacity and change if necessary
Hydraulic control valve block is defective or set improper - Change or set correctly
Defective hydraulic cylinder - Check cylinder parts for wear or damage and replace if necessary
Hydraulic piping leaks - Detect leaks in hydraulic system and repair it
3-point hitch won't raise or raises slowly
Not enough hydraulic fluid in the system - Need to add fluid
Hydraulic fluid is too cold - Allow fluid to warm
Hydraulic fluid filter is dirty - Change hydraulic filter element or clean if necessary
Hydraulic pump is faulty - Check hydraulic pump flow and replace pump if necessary
Main relief valve failure or incorrect setting - Replace or set up the relief valve
Damaged or incorrect adjusted hydraulic spool valve - Set properly or replace
Hydraulic cylinder is broken - Inspect cylinder components for wear or damage and change if required
Broken or disconnected suction line - Connect or replace
3-point hitch drops slowly or won't drop
Defective or not adjusted hydraulic spool valve - Change or adjust properly
Broken hydraulic cylinder - Check cylinder components for wear or damage and change if necessary
Worn hitch rock shaft - Change the shaft
Mechanical parts of the hitch are damaged - Replace faulty or worn hitch parts
Jerky lifting or lowering of 3-point hitch
Air enters in hydraulic system - Check the pump seals, suction pipe, and fittings
Hydraulic oil contamination - Change the oil
Defective hydraulic pump - Flow-rate hydraulic pump and replace pump if necessary
Hydraulic spool valve is defective or set improper - Adjust properly or change
Hydraulic cylinder is broken - Inspect cylinder components for wear or damage and change if required

Steering System Troubleshooting
Steering is difficult
Steering column is damaged or improperly mounted - Replace the steering column or mount it properly
Air enters in steering system - Air-bleed steering system
Incorrect toe-in - Check toe-in and correct
Incorrect tire pressure - Inflate the tires correctly
Steering pump is worn - Steering pump needs to be replaced or repaired
Hydrostatic steering unit is damaged or worn - Replace or repair steering unit as required
Steering oil level is low - Fill up steering oil to required level
Steering system oil leakage - Tighten the steering pipe and hose joints
Excessive free play of steering wheel
Steering column shaft or coupling is worn out - Change faulty component
Hydrostatic steering unit is worn or defective - Repair or change the steering unit
Steering pump stopped working - Repair or replace steering pump
Steering tie-rod ends or linkage are worn - Replace failed part
Tractor is pulling to right or left
Incorrect tire pressure - Inflate the tires correctly
Not adjusted toe-in - Check toe-in and correct
Worn or faulty steering linkage or tie-rod ends - Change damaged part
Damaged or worn hydrostatic steering unit - Inspect and replace as required
Steering cylinder malfunction - Change or repair steering cylinder
Incorrectly adjusted or worn 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