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Ford 4630 Tractor Troubleshooting
The
Ford 4630 is a 30-series utility tractor. This model was manufactured from 1990
to 1993. The Ford 4630 tractor is powered by Ford vertical 3-cylinder water
cooled diesel engine with a rated power of 60 Hp (44.7 kW) at 2200 rev/min.
The Ford 4630 is fitted with three transmission options: 8x2 Dual Range
transmission, 8x8 synchronized shuttle transmission, and 16x8 Dual Power
transmission. Max. forward speed - 16.5 mph (26.4 km/h), maximum reverse
speed - 14.5 mph (23.2 km/h). The open center hydraulic system has a
pump with a flow rate of 8.5 gpm (32.2 lpm).
The closed center hydraulic system has a pump with a flow rate of 14.1
gpm (53.4 lpm). The 2WD models are equipped with 7.50x15 front tires and
11.2x24 rear tires. The 7.50x18 front tires and 13.6x28 rear tires are
used for 4WD tractors. The wheel base is 84.5 in (2140 mm) for models
with 2-wheel drive and 84.1 in (2130 mm) for models with 4-wheel drive.
Compatible attachments for the Ford 4630: Ford 7209 loader with a max
lift height of 110" (2790 mm), Ford 7210 loader with a max lift height
of 124" (3140 mm), Ford 7310 loader with lift capacity to full height of
2685 lbs (1217 kg), Ford 7410 loader with lift capacity to full height
of 2500 lbs (1134 kg).
| Engine Troubleshooting |
| Engine won't start or difficult to start |
| Dirty fuel filter element - Install new filter element |
| Closed fuel cock - Open fuel on-off cock to inject fuel |
| Air trapped in fuel system - Bleed air |
| Dirty or damaged injectors - Check fuel injectors and replace if required |
| Fuel injection pump is not working correctly - Replace or repair injection pump |
| Poor engine compression - Check cylinder block and change worn components |
| Engine stalls while running |
| Engine has not warmed up to recommended temperature - Warm up the engine |
| Fuel-line is leaking air - Retighten clamps, replace defective pipes |
| Irregular fuel injection - Adjust fuel injection timing |
| Clogged fuel filter element - Replace filter element |
| Fuel injectors are defective or dirty - Inspect fuel injectors and replace if necessary |
| Engine starts and immediately stops |
| Timing of fuel injection pump is wrong - Fuel injection pump timing adjustment needs to be corrected |
| Plugged fuel filter - Change filter element |
| Faulty fuel injector nozzles - Install new set of properly balanced nozzles |
| Fuel injection pump is broken - Rebuild or change fuel pump |
| Clogged air cleaner - Service or change air cleaner |
| Engine stalls when idling |
| Incorrect low idle setting - Normalize low idle speed |
| Fuel injection pump is broken - Replace or rebuild injection pump |
| Fuel injector nozzles fault - Inspect injector nozzles and change if required |
| The valve clearance is incorrect - Adjust valve clearance |
| Lack of coolant in cooling system - Coolant needs to be refilled. Inspect the system for leaks |
| Cooling system is clogged or cooling parts are defective - Flush cooling system or change faulty components |
| Not enough engine oil - Check oil level and add oil as required |
| Fan belt tension is incorrect or belt is defective - Adjust belt tension correctly or replace it |
| Defective thermostat - Test thermostat opening temperature, replace as required |
| Diesel engine is losing power |
| Clogged or damaged injectors - Check fuel injectors and replace if required |
| Incorrect fuel injection pressure - Adjust to proper pressure |
| Air filter is dirty - Replace filter or install new filter element |
| Oil filter element clogging - Clean or change engine oil filter |
| Engine is overloaded - Reduce engine load |
| Valve out of adjustment - Have it adjusted |
| Incorrectly set low idle speed - Need to adjust idle speed |
| Dirt in the hoses or pipes - Clean fuel system hoses and pipes |
| Insufficient engine compression: Intake or exhaust valves are damaged - Replace the valves as required |
| Incorrect setting of fuel injection pump timing - Adjust injection timing |
| Fuel injector nozzles are dirty - Replace fuel injector nozzles |
| Engine oil level is low - Add oil to the engine crankcase |
| Engine is cold - Warm up the engine |
| Main bearings or crankshaft wear - Worn parts replacement required |
| Broken or defective piston rings - Piston rings need to be replaced |
| Loose flywheel bolts - Inspect flywheel bolts and tighten properly |
| Diesel engine using too much oil |
| Oil leaks: Worn seals or gaskets - Change to repair leaks |
| Oil viscosity is wrong - Use oil of proper viscosity |
| Seized or wear piston rings - Piston rings replacement required |
| Worn valve guides and valve stems - Valves replacement required |
| Scored pistons or cylinder liners - Inspect liners and pistons, fit new parts as necessary |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Faulty cell in battery - Replace the battery |
| Damaged battery cable harness - Check electrical cables for damage, repair or replace |
| Battery terminals and cables are loose or corroded - Service or tighten battery cables and terminals |
| Belt is damaged or belt tension is incorrectly adjusted - Adjust belt tension as required or change belt |
| Low battery voltage - Battery is drained, recharge it |
| Battery will not hold charge - Service charging system or install new battery |
| Damaged battery electrical wire harness - Inspect electrical wires for damage, change or repair |
| Corroded or loose battery terminals and cables - Clean or tighten terminals and cables |
| Starter motor is not working |
| Low battery output - Battery is drained, charge it |
| Drained or defective battery - Need to charge or replace the battery |
| Starter motor is defective - Repair or install a new starter |
| Battery cables are disconnected or incorrectly connected - Check cables and reconnect it correctly |
| Transmission Troubleshooting |
| Hard shifts |
| Failure or improper clutch adjustment - Replace or adjust clutch |
| Stuck or damaged gear shift linkage - Service or replace shift linkage |
| Worn or damaged shift forks - Replace defective shift forks |
| Worn gear shift mechanism - Replace worn components |
| Lack of transmission oil pressure |
| Not enough oil in transmission - Add transmission oil as required |
| Plugged transmission fluid filter (if equipped) - Change or clean the transmission fluid filter |
| Damaged relief valve - Install a new relief valve |
| Broken or worn bearings - Bearings replacement required |
| Insufficient oil supply - Add transmission oil as required |
| Contaminated transmission oil - Transmission oil must be changed |
| Incorrect backlash or gears are defective - Change the gears or adjust backlash correctly |
| Shift forks are damaged or worn - Change the shift forks |
| Worn gaskets or seals - Replace worn seal or gaskets |
| Cracked transmission case - Install a new transmission case |
| Hydraulics Troubleshooting |
| Hydraulic system is too hot |
| Improper hydraulic system pressure setting - Set the pressure properly |
| Defective or misadjusted main relief valve - Adjust or replace the relief valve |
| Contaminated hydraulic oil - Change hydraulic oil |
| Aeration in hydraulic system - Inspect the suction line, pump seals, and fittings |
| Hydraulic oil pressure too low |
| Lack of hydraulic oil - Check oil level and add hydraulic oil as required |
| Hydraulic fluid filter element is dirty - Clean or change hydraulic filter |
| Faulty hydraulic oil pump - Test the pump flow rate and change pump if required |
| Defective or incorrect setting hydraulic spool valve block - Change or adjust properly |
| Hydraulic cylinder is not working - Inspect the hydraulic cylinder parts for damage or wear and replace if required |
| Hydraulic piping leaks - Detect leaks in the system and fix it |
| Hitch won't lift or lifts slowly |
| Not enough hydraulic fluid in the system - Fill the hydraulic system with oil |
| Cold hydraulic fluid - Warm up the fluid |
| Hydraulic fluid filter is clogged - Clean or replace the hydraulic filter |
| Hydraulic pump not working - Test the pump flow rate and change pump if required |
| Main relief valve is faulty or misadjusted - Adjust or replace the relief valve |
| Hydraulic spool valve is not set properly or defective - Set properly or replace |
| Hydraulic cylinder is defective - Inspect cylinder components for wear or damage and change if required |
| Disconnected or damaged suction pipe - Connect or replace |
| 3-point hitch drops slowly or won't drop |
| Hydraulic control valve is faulty or out of adjustment - Set properly or replace |
| Hydraulic cylinder is not working - Check the hydraulic cylinder components for damage or wear and change if necessary |
| Worn lift arm shaft - Replace the shaft |
| Mechanical parts of the hitch are damaged - Replace worn or faulty hitch parts |
| Jerky lowering or lifting of the hitch |
| Hydraulic system sucks air - Inspect the pump seals, suction pipe, and fittings |
| Hydraulic oil is contaminated - Fill up with fresh hydraulic oil |
| Hydraulic pump malfunction - Check hydraulic pump flow and replace pump if necessary |
| Hydraulic control valve is faulty or out of adjustment - Change or set correctly |
| Defective hydraulic cylinder - Check cylinder parts for wear or damage and replace if necessary |
| Steering System Troubleshooting |
| Steering is stiff |
| Steering column is worn or improperly fitted - Refit properly or change the steering column |
| Air leaks in steering system - Need to bleed air |
| Steering filter is clogged - Replace steering filter element |
| Incorrect toe-in - Check toe-in and correct |
| Tire pressure is improper - Inflate the tires properly |
| Steering pump is faulty - Repair or replace steering pump |
| Power steering control unit is worn or defective - Inspect and change as required |
| Relief valve is worn or seized - Inspect relief valve and replace if necessary |
| Steering fluid level is insufficient - Add oil to steering system |
| Oil leakage in the steering system - Retighten steering line and hose connections |
| Steering wheel free play is excessive |
| Worn steering column coupling or shaft - Change defective component |
| Worn or damaged power steering control unit - Inspect and change as required |
| Steering pump malfunction - Install a new steering pump |
| Worn or faulty steering tie-rod ends or linkage - Change failed component |
| Front wheels wander to left or right |
| Tires are deflated - Need to inflate tires |
| Incorrect toe-in adjustment - Adjust toe-in properly |
| Worn or faulty steering linkage or tie-rod ends - Change damaged component |
| Defective or worn power steering control unit - Change or repair steering unit if required |
| Defective steering cylinder - Repair or change steering cylinder |
| Front hub bearings are improperly adjusted or defective - Install new bearings or adjust it correctly |
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| Farm Tractors Technical Specifications |
