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John Deere 3640 Troubleshooting
The
John Deere 3640 is a 4-wheel drive utility tractor. This model was manufactured
between 1984 and 1987. The John Deere 3640 tractor is equipped with a 359 cubic
inches JD 6359D 4-cycle 6-cylinder direct injection liquid cooled diesel engine
rated at 117 hp (87.2 kW).
The maximum torque is 393 Nm (290 lb-ft) at 1400 rpm. The Power Synchron
transmission consists of a hydraulic clutch with a cerametallic dry disc
and partial power shift gearbox with 16 forward and 8 reverse speeds.
The maximum forward speed - 19 mph (30.6 km/h), max. reverse speed - 8.5
mph (13.7 km/h).
The closed center constant pressure hydraulic system used a piston pump
with a flow rate of 11.9 gpm (44 lpm). The hydraulic system pressure is
170 bar (2470 psi). The John Deere 3640 is equipped with a power
steering system, hydraulic wet disc brakes, 12.4x28 or 13.6x28 front
tires, and 16.9x38 or 18.4x38 rear tires. The wheelbase is 102 inches
(2590 mm).
| Engine Troubleshooting |
| Engine hard starting or not starting |
| Dirty fuel filter element - Change filter element |
| Closed fuel supply valve - Open supply valve to inject fuel |
| Fuel lines leaking air - Tighten clamps, change faulty pipes |
| Fuel injectors are damaged or dirty - Change fuel injectors |
| Fuel injection pump damage - Install a new pump or rebuild |
| Low compression - Inspect and replace faulty parts |
| Engine stops during operation |
| Engine is cold - Warm up to required temperature |
| Air in fuel pipes - Bleed fuel pipes |
| Uneven fuel injections - Repair or adjustment |
| Fuel filter is clogged - Replace filter element |
| Fuel injectors are clogged or faulty - Service or change fuel injectors |
| Diesel starts but then stalls |
| Timing of fuel injection pump is wrong - Check and correct settings |
| Clogged fuel filter element - Service the filter |
| Fuel injector nozzles are defective or dirty - Install a new set of well-balanced nozzles |
| Defective fuel injection pump - Repair or change injection pump |
| Air cleaner element clogging - Replace or service air cleaner element |
| Improperly adjusted low idle speed - Adjust low idle speed |
| Damaged fuel injection pump - Install a new fuel pump or repair |
| Damaged or clogged injector nozzles - Change or clean injector nozzles |
| The valve clearance is incorrect - Adjustment procedure required |
| Insufficient coolant - Fill cooling system to proper level. Check the components of cooling system |
| Cooling system is clogged or cooling parts are worn - Service the cooling system or replace faulty components |
| Engine oil level is low - Fill the crankcase with engine oil |
| Fan belt tension is incorrect or belt is defective - Adjust properly or replace the belt |
| Defective thermostat - Replace the thermostat |
| Clogged fuel injectors - Change fuel injectors |
| Fuel injection pressure is incorrect - Test fuel injection pressure and adjust it correctly |
| Dirty air filter element - Install new filter element or replace it |
| Oil filter element clogged - Service or change engine oil filter element |
| Engine overloaded - Change to lower gear or reduce load |
| The valve clearance is not adjusted - Adjust valve clearance |
| Incorrectly adjusted low idle speed - Normalize low idle speed |
| Clogged fuel hoses or pipes - Fuel pipes and hoses need to be cleaned |
| Loss of compression: Leaking or faulty valves - Valve replacement required |
| Abnormal engine noise or knocking |
| Unadjusted fuel injection pump timing - Adjust injection timing |
| Fuel injector nozzles are damaged - Replace fuel injector nozzles |
| Engine oil level is low - Checking oil level and add if necessary |
| Engine not warmed up - Warm up the engine |
| Worn main bearings or crankshaft - Change defective components as required |
| Stuck or worn piston rings - Replace piston rings |
| Flywheel screws are loose - Tighten the screws firmly |
| Engine using too much oil |
| Oil leakage: Damaged gaskets or seals - To repair leaks, replace worn parts |
| Improper oil viscosity - Fill up with the correct oil viscosity |
| Worn or broken piston rings - Piston rings need to be replaced |
| Worn valve guides and valve stems - Replace the valves |
| Damaged pistons or cylinder liners - Check pistons and liners, install new parts as required |
| Electrical System Troubleshooting |
| Battery is not charging |
| Dead cell in battery - Replace the battery |
| Bad battery cable harness - Inspect cables for malfunctions, repair or change |
| Corroded or loose battery cables and terminals - Clean or tighten cables and terminals |
| Worn belt or improperly adjusted belt tension - Replace belt or correctly adjust belt tension |
| Low battery power - Battery is drained, recharge it |
| Battery won’t hold charge - Service charging system or change battery |
| Battery wiring harness failure - Inspect electrical cables for defects, repair or replace |
| Battery cables and terminals are loose or corroded - Tighten or clean cables and terminals |
| Low battery output - Recharge the battery |
| Discharged or worn battery - Recharge or change battery |
| Starter motor is faulty - Starter should be replaced |
| Improperly connected or disconnected cables - Check battery cables and connect properly |
| Transmission Troubleshooting |
| Difficult to shift gears |
| Clutch is unadjusted or worn - Clutch needs to be adjusted or changed |
| Gear shift linkage is loose or broken - Service or change the shift linkage |
| Bent or worn shift forks - Install new shift forks |
| Gearshift mechanism failure - Change or repair failed components |
| Low transmission fluid pressure |
| Insufficient fluid supply - Fill system with correct transmission fluid level |
| Transmission oil filter element is dirty (if fitted) - Replace or service transmission oil filter |
| Relief valve is defective - Replace valve as required |
| Broken or worn bearings - Bearings need to be changed |
| Lack of transmission fluid supply - Add transmission fluid as required |
| Contaminated transmission oil - Fill up with fresh transmission oil |
| Improper backlash or damaged gears - Change damaged gears or adjust backlash properly |
| Bent or worn shift forks - Change defective shift forks |
| Worn gaskets or seals - Install new components |
| Transmission housing is cracked - Replace housing or transmission assembly |
| Hydraulics Troubleshooting |
| Hydraulic system overheats |
| Incorrect hydraulic pressure adjustments - Adjust correctly |
| Main relief valve is faulty or misadjusted - Adjust or replace the relief valve |
| Hydraulic fluid contamination - Change hydraulic fluid |
| Air leaks in hydraulic system - Check the suction pipe, fittings, and pump seals |
| Hydraulic fluid pressure is insufficient |
| Hydraulic fluid level is low - Fill the hydraulic system with oil |
| Hydraulic fluid filter is clogged - Change hydraulic filter element or clean if necessary |
| Hydraulic pump is faulty - Check pump performance and change it if necessary |
| Faulty or incorrect setting hydraulic spool valve - Change or adjust properly |
| Hydraulic cylinder failure - Check cylinder components for damage or wear and change if necessary |
| Leakage in hydraulic pipes - Find leaks in hydraulic system and repair it |
| Hitch cannot be raised or raising is too slowly |
| Lack of hydraulic oil - Fill up the hydraulic oil |
| Cold hydraulic fluid - Warm up the fluid |
| Hydraulic oil filter element is dirty - Clean or change hydraulic filter |
| Faulty hydraulic oil pump - Check pump performance and change it if necessary |
| Main relief valve is faulty or misadjusted - Adjust the valve or replace if necessary |
| Hydraulic spool valve is not set properly or defective - Change or adjust properly |
| Broken hydraulic cylinder - Inspect cylinder components for wear or damage and change if required |
| Damaged or loose hydraulic suction line - Tighten or change it |
| Hitch drops too slowly or can't drop |
| Damaged or incorrect adjusted hydraulic spool valve - Adjust correctly or change |
| Hydraulic cylinder failure - Check the hydraulic cylinder parts for damage or wear and replace if necessary |
| Damaged hitch cross shaft - Replace the shaft |
| Internal mechanical failure of the hitch - Replace worn or defective hitch parts |
| 3-point hitch lift or lower is jerky |
| Air trapped in the hydraulic system - Check the pump seals, suction line, and fittings |
| Hydraulic fluid contamination - Change hydraulic fluid |
| Defective hydraulic pump - Test the pump performance and change pump if required |
| Defective or not adjusted hydraulic control valve - Replace or set properly |
| Hydraulic cylinder is faulty - Check cylinder components for wear or damage and change if necessary |
| Steering System Troubleshooting |
| Difficult steering |
| Defective or incorrectly installed steering column - Reinstall the steering column or change it |
| Air in steering system - Bleed the steering system |
| Toe-in adjustment is incorrect - Check toe-in and correct |
| Tires are deflated - Need to inflate tires |
| Steering pump is faulty - Check the hydraulic steering pump and change if necessary |
| Hydrostatic steering unit is damaged or worn - Inspect and change as required |
| Relief valve is stuck or faulty - Install a new relief valve or clean it |
| Low steering fluid level - Fill the steering system with fluid |
| Oil leaks in the steering system - Tighten the steering hose and pipe joints |
| Steering wheel free play is excessive |
| Steering column coupling or shaft is extremely worn out - Replace defective component |
| Faulty or worn hydrostatic steering unit - Repair or replace the steering unit |
| Hydraulic steering pump is defective - Repair or replace steering pump |
| Steering linkage or tie-rod ends are worn - Change damaged part |
| Tractor pulls to right or left |
| Deflated front tyres - Inflate tyres as needed |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Steering tie-rod ends or linkage are worn - Replace failed part |
| Damaged or worn hydrostatic steering unit - Repair or replace the steering unit |
| Damaged steering cylinder - Change or repair hydraulic steering cylinder |
| Front hub bearings are damaged or incorrectly adjusted - Install new bearings or adjust it correctly |
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| Farm Tractors Technical Specifications |
