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Ford 3910 Tractor Troubleshooting
The
Ford 3910 is a 2-wheel drive or 4-wheel drive utility tractor from 10-series.
This model was manufactured between 1983 and 1989. The 3910 tractor is powered
by Ford vertical 3-cylinder direct injection diesel engine with a max output
power of 50 Hp (37.3 kW) and 187 Nm (138 lb-ft) of max torque at 1400 rpm.
The Ford 3910 is fitted with three transmission options: 8x2 Dual-range
transmission, 8x4 synchromesh gear transmission, and 6x4 mechanical
shuttle transmission. Max. forward speed - 18.5 mph (29.8 kph), max.
reverse speed - 16.1 mph (25.9 kph).
The open center hydraulic system used a gear pump with rated fluid flow
of 7.7 gpm (29.2 lpm). The hydraulic pressure is 173 bar (2500 psi). The
4x2 models are equipped with 7.50x15 front tyres and 13.6x28 rear tyres.
The 9.5x24 front tyres and 14.9x28 rear tyres fit 4x4 tractors. The
wheelbase is 77.5" (1960 mm) for 2WD models and 84.1" (2130 mm) for 4WD
models. The 3910 tractor is compatible with Ford 776A front end loader
with a maximum lift height of 124" (3140 mm) and lifting capacity of
2500 lbs (1134 kg).
| Engine Troubleshooting |
| Engine doesn't start or difficult to start |
| Clogged fuel filter element - Clean or replace the filter |
| No fuel injection - Open fuel cock to inject fuel |
| Water, dirt, or air in fuel system - Drain, flush, fill, and bleed system |
| Dirty or faulty injectors - Change fuel injectors |
| Defective fuel injection pump - Install a new pump or rebuild |
| Bad engine compression - Inspect cylinder block and replace worn components |
| Engine stops running while driving |
| Engine is not preheated - Warm up the engine |
| Fuel-line is leaking air - Retighten clamps, replace defective pipes |
| Improper fuel injection - Fuel injection settings required |
| Fuel filter is dirty - Install new filter element |
| Dirty or faulty injectors - Check fuel injectors and replace if required |
| Incorrect setting of fuel injection pump timing - Correct injection timing |
| Plugged fuel filter - Clean or replace the filter |
| Fuel injector nozzles are defective or dirty - Install a new set of well-balanced nozzles |
| Fuel injection pump malfunctioning - Install a new pump or rebuild |
| Dirty air cleaner element - Replace or clean the air cleaner element |
| Engine shuts off while idling |
| Low idle speed setting is incorrect - Adjust as required |
| Defective fuel injection pump - Rebuild or install a new injection pump |
| Faulty fuel injector nozzles - Service or replace injector nozzles |
| Improper valve clearance - Correct valve clearance needs to be set |
| Insufficient coolant fluid - Refill to the correct level. Check the components of cooling system |
| Cooling system parts are defective or system is clogged - Service the cooling system or replace faulty components |
| Not enough engine oil - Check and refill engine oil |
| Fan belt tension is unadjusted or belt is worn - Adjust properly or replace the belt |
| Thermostat is defective - Check and replace if required |
| Fuel injectors are damaged or dirty - Inspect fuel injectors and replace if necessary |
| Fuel injection pressure is wrong - Adjust pressure to proper level |
| Clogged air filter - Air filter maintenance required |
| Oil filter element clogging - Change or service engine oil filter |
| Engine is running overloaded - Reduce engine load |
| Valve clearance is wrong - Adjust to proper valve clearance |
| Low idle speed setting is incorrect - Normalize low idle speed |
| Fuel hoses or pipes clogging - Clean fuel system hoses and pipes |
| Lack of compression: Valves are faulty or leaking - Replace the valves as required |
| Abnormal engine noise or knocking |
| Unadjusted fuel injection pump timing - Check the fuel injection pump timing setting |
| Fuel injector nozzles are dirty or defective - Inspect injector nozzles and change if required |
| Not enough engine oil - Add oil to the engine crankcase |
| Engine is not fully warmed up - Warm up the engine |
| Worn main bearings or crankshaft - Crankshaft or bearings need to be replaced |
| Worn or broken piston rings - Install new piston rings |
| Loose flywheel screws - Inspect the flywheel screws and tighten securely |
| Excessive engine oil consumption |
| Oil leaks: Seals or gaskets are wearing excessively - To repair leaks, replace worn parts |
| Wrong oil viscosity - Use proper viscosity oil |
| Worn or broken piston rings - Replace piston rings |
| Worn valve guides and valve stems - Valves need to be changed |
| Pistons or cylinder liners are damaged - Inspect liners and pistons, replace as necessary |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Battery is worn - Battery replacement required |
| Battery electrical wire harness failure - Inspect wires for defects, change or repair |
| Corroded or loose terminals and cables - Service or tighten battery terminals and cables |
| Belt slipping or wrong belt tension adjustment - Replace belt or adjust belt tension correctly |
| Low battery voltage - Low battery charging, charge as required |
| Battery runs out quickly - Service charging system or install new battery |
| Damaged battery wiring harness - Inspect wiring for damage, replace or repair |
| Battery terminals and cables are corroded or loose - Clean or tighten cables and terminals |
| Starter motor is not working |
| Low battery capacity - Battery is drained, charge it |
| Discharged or defective battery - Battery needs to be recharged or replaced |
| Faulty starter motor - Starter needs to be changed |
| Battery cables are disconnected or incorrectly connected - Check cables and reconnect it correctly |
| Transmission Troubleshooting |
| Hard to shift gears |
| Incorrectly adjusted or damaged clutch - Adjust correctly or replace |
| Gear shift linkage is damaged or loose - Change or repair shift linkage |
| Bent or worn shift forks - Replace defective shift forks |
| Faulty parts in the gear shifting mechanism - Change faulty parts |
| Low transmission oil pressure |
| Insufficient fluid supply - Check and refill the transmission fluid |
| Plugged transmission fluid filter (if equipped) - Change or clean the transmission fluid filter |
| Relief valve sticking - Install a new valve |
| Transmission makes excessive noise |
| Bearings are worn or broken - Faulty bearings should be changed |
| Lack of transmission fluid supply - Add transmission fluid as required |
| Contaminated transmission fluid - Fill up with fresh transmission fluid |
| Damaged gears or improper backlash - Change worn gears or set backlash correctly |
| Shift forks are damaged or worn - Replace defective shift forks |
| Seals or gaskets are damaged - Seals and gaskets replacement required |
| Transmission case is cracked - Replace case or transmission assembly |
| Hydraulics Troubleshooting |
| Excessive hydraulic system heat |
| Incorrect pressure in hydraulic system - Changing the system pressure |
| Defective or misadjusted main relief valve - Replace or set up the relief valve |
| Contaminated hydraulic fluid - Change hydraulic fluid |
| Air enters in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Hydraulic oil pressure too low |
| Hydraulic oil level is insufficient - Check oil level and add hydraulic oil as required |
| Dirty hydraulic oil filter - Service or replace the hydraulic filter |
| Damaged hydraulic oil pump - Flow-rate pump and change pump if necessary |
| Hydraulic control valve block is not set properly or defective - Replace or adjust correctly |
| Faulty hydraulic cylinder - Check the hydraulic cylinder components for damage or wear and change if necessary |
| Hydraulic lines are leaking - Detect leaks in hydraulic system and repair it |
| 3-point hitch lifts slowly or won't lift |
| Not enough hydraulic oil in the system - Check oil level and add hydraulic oil as required |
| Cold fluid in hydraulic system - Wait for fluid to warm up |
| Hydraulic oil filter element clogging - Clean the hydraulic filter element or replace if necessary |
| Hydraulic pump not working - Check pump flow and install new pump if necessary |
| Defective or misadjusted main relief valve - Adjust the valve or replace if necessary |
| Defective or not adjusted hydraulic spool valve - Change or adjust properly |
| Hydraulic cylinder failure - Inspect cylinder components for wear or damage and change if required |
| Suction pipe is broken or loose - Tighten the pipe or replace it |
| 3-point hitch fails to drop or drops slowly |
| Hydraulic spool valve is not set properly or defective - Replace or set properly |
| Hydraulic cylinder is defective - Check cylinder parts for wear or damage and replace if necessary |
| Hitch rock shaft is damaged - Replace the shaft |
| The hitch has mechanical faults - Change defective or worn hitch parts |
| Hitch is lowered or raised jerkily |
| Air trapped in the hydraulic system - Check the suction line, pump seals, and fittings |
| Hydraulic oil is contaminated - Fill up with fresh hydraulic oil |
| Damaged hydraulic oil pump - Check hydraulic pump flow and replace pump if necessary |
| Hydraulic control valve is defective or set improper - Change or adjust correctly |
| Hydraulic cylinder is not working - Inspect the cylinder components for damage or wear and change if required |
| Steering System Troubleshooting |
| Steering is difficult |
| Worn or improperly mounted steering column - Mount the steering column properly or change it |
| Air trapped in the steering system - Bleed the system of air |
| Clogged steering filter element - Steering filter maintenance required |
| Improper toe-in - Adjust toe-in correctly |
| Deflated front tyres - Inflate tyres as needed |
| Damaged hydraulic steering pump - Check the hydraulic steering pump and change if necessary |
| Defective or worn steering cylinder - Repair or replace the steering cylinder |
| Worn steering gear box components - Replace defective components of power steering gearbox |
| Relief valve is seized or defective - Inspect relief valve and replace if necessary |
| Steering fluid level is insufficient - Add oil to steering system |
| Steering system oil leakage - Retighten steering pipe and hose connections |
| Steering wheel has too much free-play |
| Worn steering column coupling or shaft - Change defective part |
| Steering cylinder is worn or defective - Repair or replace the steering cylinder |
| Worn steering box components - Change defective steering box parts |
| Worn steering pump - Check the hydraulic steering pump and change if necessary |
| Faulty or worn steering linkage or tie-rod ends - Replace failed part |
| Tractor is pulling to right or left |
| Improper tire pressure - Check the pressure and inflate tires as required |
| Toe-in adjustment is incorrect - Adjust toe-in properly |
| Steering tie-rod ends or linkage are worn - Change failed component |
| Faulty steering box parts - Repair power steering gearbox |
| Faulty steering cylinder - Repair or replace hydraulic steering cylinder |
| Front hub bearings are defective or improperly adjusted - Install new bearings or adjust it correctly |
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| Farm Tractors Technical Specifications |
