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Ford 6600 Tractor Troubleshooting
The
Ford 6600 is a 2WD or 4WD utility tractor. This model was manufactured from 1975
to 1981. The Ford 6600 tractor is powered by 256 cu.in (4.2 L) Ford four stroke
4-cylinder liquid-cooled diesel engine.
The engine has a cylinder bore of 4.4" (112 mm), piston stroke of 4.2"
(107 mm), and rated power of 75.5 hp (56.3 kW). The Ford 6600 is fitted
with two types of transmission. 1st type: 8x2 gear transmission. 2nd
type: 16x4 Dual Power two-speed powershift transmission.
The maximum travel speed (forward and reverse): 17.4 mph (28 km/h) / 8.4
mph (13.5 km/h). The open center hydraulic system used a gear pump with
a flow of 9.7 gpm (36.8 lpm). The hydraulic pressure is 145 bar (2100
psi). The tractor was equipped with a power steering system,
differential mechanical wet disc brakes, 7.50x16 front tires, and
16.9x30 rear tires. The wheelbase is 88 in (2230 mm).
The Ford 6600 is compatible with the following attachments:
Ford 772
loader with lift capacity to full height of 2460 lbs (1115 kg),
Ford 774
loader with lift capacity to max height of 2000 lbs (907 kg), and Ford
772QT loader with lift capacity to max height of 2500 lbs (1134 kg).
| Engine Troubleshooting |
| Engine will not start or starts up hard |
| Clogged fuel filter element - Service or replace the filter |
| The fuel shut-off valve is closed - Open fuel shut-off valve |
| Air in fuel pipes - Bleed fuel pipes |
| Clogged fuel injectors - Clean or replace fuel injectors |
| Fuel injection pump is not operating properly - Install a new fuel pump or repair |
| Bad compression - Check cylinder block and replace damaged components |
| Engine shuts off while driving |
| Engine is not preheated - Normalize the engine temperature |
| Air in fuel system - Air-bleed fuel system |
| Bad fuel injection - Check and adjust |
| Clogged fuel filter element - Clean or replace the filter |
| Dirty or damaged injectors - Change fuel injectors |
| Diesel starts and stalls suddenly |
| Timing of fuel injection pump is wrong - Check and correct settings |
| Plugged fuel filter - Change filter element |
| Fuel injector nozzles are faulty - Test injector nozzles and replace as required |
| Fuel injection pump is not working correctly - Repair or replace injection pump |
| Clogged air cleaner element - Replace or clean the air cleaner element |
| Low idle speed setting is not correct - Adjust as required |
| Fuel injection pump is broken - Repair or replace injection pump |
| Fuel injector nozzles are damaged or dirty - Check and change nozzles as required |
| Valve out of adjustment - Check and adjust |
| Engine coolant is insufficient - Fill radiator to proper level. Check for coolant leaks |
| Cooling system components are damaged or system is dirty - Change faulty components or service cooling system |
| Engine oil level is insufficient - Checking oil level and add if necessary |
| Fan belt is damaged or belt tension is incorrect - Change or adjust belt tension correctly |
| Defective thermostat - Install new thermostat |
| Clogged fuel injectors - Service or change fuel injectors |
| Uneven fuel injection pressure - Repair or replace injection pump |
| Air filter is clogged - Change or replace air filter element |
| Oil filter element clogged - Change or clean engine oil filter element |
| Engine is running overloaded - Load reducing required |
| Excessive valve clearance - Check and adjust as required |
| Incorrect low idle speed adjustment - Correct the settings |
| Dirt in the fuel pipes or hoses - Clean fuel system hoses and pipes |
| Engine compression is insufficient: Worn or damaged valves - Change the valves |
| Abnormal engine noise or knocking |
| Incorrectly set fuel injection pump timing - Repair or replace fuel injection pump |
| Faulty fuel injector nozzles - Install new set of properly balanced nozzles |
| Engine oil level is low - Check and refill engine oil |
| Engine has not warmed up to recommended temperature - Normalize the engine temperature |
| Worn main bearings or crankshaft - Have bearings or crankshaft replaced |
| Worn or broken piston rings - Piston rings need to be replaced |
| Loose flywheel screws - Inspect the flywheel screws and tighten securely |
| Engine using too much oil |
| External oil leaks: Damaged gaskets or seals - To repair leaks, replace worn parts |
| Oil viscosity is wrong - Fill up with the proper oil viscosity |
| Worn or broken piston rings - Piston rings need to be replaced |
| Worn valve stems and valve guides - Install new valves |
| Cylinder liners or pistons are scuffed - Check pistons and liners, replace as required |
| Electrical System Troubleshooting |
| Battery won’t charge |
| Battery is worn - Battery replacement required |
| Battery cable harness damage - Check battery cables for damage, change or repair |
| Battery cables and terminals are loose or corroded - Tighten or service terminals and cables |
| Belt damage or incorrect belt tension adjustment - Adjust belt tension correctly or change belt |
| Battery power is low - Recharge the battery |
| Battery will not hold charge - Battery needs service or replacement |
| Battery wiring harness damage - Inspect battery wiring for damage, replace or repair |
| Corroded or loose terminals and cables - Clean or tighten terminals and cables |
| Low battery output - Battery is drained, charge it |
| Drained or defective battery - Recharge or replace battery |
| Starter motor is defective - Replace or repair starter |
| Disconnected or incorrectly connected wiring harness - Inspect wiring harness and reconnect it as required |
| Transmission Troubleshooting |
| Gear hard to shift |
| Worn or incorrectly adjusted clutch - Adjust clutch or replace if required |
| Loose or broken gear shift linkage - Change or repair shift linkage |
| Bent or worn shift forks - Install new shift forks |
| Gearshift mechanism failure - Change or repair failed components |
| Transmission oil pressure is low |
| Lack of transmission fluid supply - Fill up the transmission fluid |
| Transmission fluid filter element is dirty (if fitted) - Clean or replace the transmission fluid filter |
| Relief valve is faulty - Change relief valve |
| Bearings are worn or cracked - Faulty bearings should be replaced |
| Insufficient fluid supply - Check transmission fluid level and add it as required |
| Dirty transmission fluid - Transmission fluid must be changed |
| Gears are defective or backlash is incorrect - Set backlash correctly or change the gears |
| Shift forks are worn or damaged - Install new shift forks |
| Gaskets or seals are damaged - Change defective gaskets or seal |
| Cracked transmission housing - Housing needs to be replaced |
| Hydraulics Troubleshooting |
| Hydraulic system is overheated |
| Hydraulic system pressure is unadjusted - Adjust the pressure as required |
| Unadjusted or defective main relief valve - Replace or set up the relief valve |
| Hydraulic oil is contaminated - Fill up with fresh hydraulic oil |
| Air leaks in hydraulic system - Check the suction line, pump seals, and fittings |
| Low hydraulic fluid pressure |
| Hydraulic oil level is insufficient - Check oil level and add hydraulic oil as required |
| Dirty hydraulic oil filter - Clean the hydraulic filter element or replace if necessary |
| Faulty hydraulic oil pump - Flow-rate pump and change pump if necessary |
| Defective or not adjusted hydraulic spool valve - Replace or set properly |
| Hydraulic cylinder is broken - Check the hydraulic cylinder components for damage or wear and change if necessary |
| Hydraulic piping leaks - Detect leaks in the system and fix it |
| Hitch won't lift or lifts slowly |
| Not enough hydraulic oil in the system - Check oil level and add hydraulic oil as required |
| Cold oil in hydraulic system - Wait for oil to warm up |
| Hydraulic oil filter is dirty - Install a new hydraulic filter element |
| Damaged hydraulic oil pump - Flow-rate pump and change pump if necessary |
| Main relief valve malfunction or incorrect adjustment - Adjust the valve or replace if necessary |
| Faulty or incorrect setting hydraulic spool valve - Replace or set correctly |
| Faulty hydraulic cylinder - Check cylinder components for wear or damage and change if necessary |
| Suction line is damaged or disconnected - Connect or replace |
| Hitch can't drop or drops too slowly |
| Defective or not adjusted hydraulic spool valve - Replace or adjust correctly |
| Hydraulic cylinder is broken - Inspect the hydraulic cylinder components for damage or wear and change if required |
| Damaged lift arm shaft - Replace the shaft |
| Damaged mechanical components of the hitch - Replace faulty or worn hitch components |
| Hitch jerks when lower or lift |
| Air enters in hydraulic system - Inspect the pump seals, suction line, and fittings |
| Contaminated hydraulic oil - Change hydraulic oil |
| Faulty hydraulic oil pump - Check the pump performance and replace it if required |
| Hydraulic spool valve block is faulty or out of adjustment - Change or adjust properly |
| Hydraulic cylinder failure - Inspect cylinder parts for wear or damage and replace if required |
| Steering System Troubleshooting |
| Heavy steering |
| Damaged or improperly fitted steering column - Fit the steering column properly or change it |
| Air in steering system - Bleed air from system |
| Clogged steering filter - Steering filter need to be replaced |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Incorrect tire pressure - Inflate the tires correctly |
| Worn steering pump - Steering pump needs to be replaced or repaired |
| Faulty or worn steering valve - Repair or replace the steering valve |
| Worn steering box parts - Change defective steering box parts |
| Stuck or worn relief valve - Install a new relief valve or clean it |
| Steering oil insufficient - Check and refill steering oil |
| Steering system has oil leaks - Retighten steering pipe and hose connections |
| Excessive free play of steering wheel |
| Steering column coupling or shaft has maximum wear - Change faulty part |
| Faulty or worn steering valve - Change or repair steering valve if required |
| Damaged steering gearbox parts - Change defective steering gear box components |
| Hydraulic steering pump is defective - Check the steering pump and replace if necessary |
| Steering tie-rod ends or linkage are defective - Replace failed part |
| Tractor is pulling to left or right |
| Front tires are worn out - Install new tires |
| Incorrect toe-in adjustment - Check toe-in and correct |
| Faulty or worn steering linkage or tie-rod ends - Replace damaged part |
| Worn steering gear box components - Repair power steering gearbox |
| Worn or damaged steering valve - Inspect and change as required |
| Incorrectly adjusted or damaged front hub bearings - Adjust correctly or replace bearings |
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| Farm Tractors Technical Specifications |
