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Case IH 3594 Troubleshooting

The Case IH 3594 is a 4WD (4x4) row-crop tractor. This model was manufactured from 1985 to 1988. The tractor is powered by 504 cu.in (8.3 L) Case 504BD six-cylinder turbocharged diesel engine with a rated power of 235 hp (174 kW).

The Case IH 3594 is fitted with a two transmission options: partial powershift transmission with 12 forward and 3 reverse gears, or powershift transmission with 24 forward and 3 reverse gears. The maximum travel speed (forward/reverse): 20.8 mph (33.5 km/h) and 8.4 mph (13.5 km/h). The closed center hydraulic system has a piston pump with a rated capacity of 30 gpm (113.6 lpm).

The hydraulic system pressure is 155 bar (2250 psi). The Case IH 3594 is equipped with a hydrostatic power steering, differential hydraulic wet disc brakes, 16.9x26 front tires, and 24.5R32 rear tires. The wheelbase is 116" (2940 mm).

Engine Troubleshooting
Engine difficult to start or will not start

Air in the fuel lines - Bleed the fuel lines.
Fuel filter element is clogged - Service the filter.
Fuel injection nozzles are faulty or clogged - Check and replace nozzles if required.
Water or dirt in fuel system - Drain, flush, and service the system.
Valve clearance is out of adjustment - Need to adjust valve clearance.
Fuel injection pump is defective - Repair or change injection pump.

Engine starts and then shuts off

Clogged air filter element - Replace air filter element.
Fuel filter element is clogged - Service or replace the filter.
Fuel injection pump is leaking - Repair any leaks.
Fuel injector fault - Replace or clean fuel injectors.
Defective fuel injection pump - Replacement or repair required.

Engine stalls during operation

Engine is not preheated - Warm up the engine.
Fuel filter plugging - Replace filter element.
There is air in the fuel system - Bleed the system.
Fuel injection nozzles are damaged - If necessary, replace with a new nozzle.
Improper setting of fuel injection pump timing - Adjust as recommended.

Engine stalls when idling

Low idle speed setting is incorrect - Correct low idle adjustment.
Fuel injection pump malfunctioning - Repair or install new pump.
Defective fuel injectors - Clean fuel injectors or change it.
Valve clearance is not correct - Adjust valve clearance according to specifications.

Reduced engine power

Dirty air cleaner - Change air filter element.
Fuel injection nozzles are faulty or clogged - Clean or replace injection nozzles.
Fuel injection pressure is wrong - Adjust pressure to proper level.
Valve clearance is not correct - Check and adjust.
Incorrect low idle setting - Normalize low idle speed.
Clogged fuel hoses or lines - Service fuel hoses and lines.
Damaged cylinder-head gasket - Replace the gasket as required.
Worn or damaged piston rings - Piston rings need to be replaced.

Engine is overheated

Engine coolant is insufficient - Add coolant and check the components of cooling system.
Lack of engine oil - Need to add engine oil.
Radiator core is dirty or radiator cap is damaged - Replace cap or clean radiator.
Damaged or worn fan belt - Install new fan belt.
Engine is running overloaded - Reduce engine load.

Oil pressure is insufficient

Low oil level - Fill up the engine oil.
Dirty oil filter element - Clean or replace engine oil filter element.
Incorrect oil viscosity - Use correct viscosity oil.
Excessive crankshaft bearing oil clearance - Bearings need to be reinstalled.
Oil pump is worn or damaged - Check and replace if necessary.

Engine noise or knocking

Insufficient engine oil - Fill the crankcase with engine oil.
Engine is cold - Warm up engine as required.
Timing of fuel injection pump is incorrect - Adjust fuel injection pump as required.
Too low idle RPM - Correct low idle adjustment.
Damaged or clogged injectors - Clean or replace fuel injectors.
Misaligned or defective connecting rod Connecting rod needs to be replaced or aligned.
Broken or worn pistons - Replace the pistons.

Transmission Troubleshooting
Low transmission fluid pressure

Lack of transmission oil supply - Fill the transmission housing with oil.
Dirty transmission fluid filter element (if equipped) - Replace or service transmission fluid filter.
Relief valve is damaged - Replace the valve.

Transmission noises

Insufficient transmission fluid - Check and refill the transmission fluid.
Transmission oil contamination - Change the oil.
Improper backlash or worn gears - Install new gears and adjust backlash properly.
Bearings are cracked or worn - Change the bearings.
Shift forks are worn or bent - Change the shift forks.
Shaft splines are damaged or worn - Replace the shaft.

Hard to shift gears

Gear shift linkage is corroded or worn - Replace or lubricate the shift linkage.
Worn or bent gear shift forks - Change defective shift forks.
Worn out parts of the gearshift mechanism - Replace worn parts.
Clutch is out of adjustment or defective - Clutch adjustment or replacement required.

Transmission oil leaking

Transmission fluid level is high - Correct the fluid level.
Seals or gaskets are worn - Replace worn gaskets or seal.

Hydraulic System Troubleshooting
Hydraulic fluid pressure is insufficient

Hydraulic oil level low - Need to add oil.
Dirty hydraulic oil filter element - Clean the hydraulic filter element or replace if necessary.
Hydraulic pump failure - Replace or repair hydraulic fluid pump.
Incorrect adjusted hydraulic control valve - Adjust correctly.
Damaged hydraulic cylinder - Install a new hydraulic cylinder or repair it.
Leaks in hydraulic lines - Identify leaks in the system and repair it.

Hydraulic system overheating

Main relief valve is damaged - Relief valve replacement required.
Improper hydraulic oil type - The proper type of hydraulic oil must be used.
Hydraulic oil is dirty - Hydraulic oil change required.
Air in hydraulic pipes - Bleed hydraulic pipes.

Hitch not raising or hitch raises slowly

Excessive hitch loading - Reduce hitch load.
Hydraulic oil is insufficient - Need to add oil.
Clogged hydraulic fluid filter element - Install a new hydraulic filter element.
Damaged hydraulic pump - Replace or repair hydraulic fluid pump.
Damaged main relief valve - Change relief valve.
Hydraulic control valve is faulty - Repair or replace the valve.
Hydraulic cylinder is defective - Install a new hydraulic cylinder or repair it.
Suction line is loose or broken - Replace or repair.

Hitch not lowering or hitch lowers slowly

Hydraulic spool valve block is not adjusted properly - The spool valve should be properly adjusted.
Broken hydraulic cylinder - Replace or repair hydraulic cylinder.
Unadjusted hitch - Adjust as required.
Worn hitch rock shaft - Replace the shaft.

Hitch lift or lower is jerky

Air trapped in hydraulic system - Bleed air from system.
Contaminated hydraulic fluid - Change hydraulic fluid.
Defective hydraulic pump - Replace or repair hydraulic fluid pump.
Hydraulic spool valve block is faulty - Install a new valve or repair it.
Broken hydraulic cylinder - Replace or repair hydraulic cylinder.

Steering Troubleshooting
Excessive effort to steer

Damaged or incorrectly assembled steering column - Replace steering column or assemble correctly.
Air in the hydraulic steering system - Need to bleed air.
Incorrect toe-in - Check and adjust toe-in.
Front tires wear unevenly - Change the tires.
Steering pump stopped working - Install a new hydraulic steering pump.
Damaged or stuck steering pump control valve - Replace or service control valve.
Low steering fluid level - Fill the steering system with fluid.

Excessive free play of steering wheel

Worn steering column shaft or coupling - Replace defective component.
Faulty steering pump - Replace or repair steering pump.
Steering linkage joints are worn or loose - Inspect and change as required.

Tractor pulls to right or left

Tire pressure is uneven - Adjust the tire pressure.
Incorrect toe-in - Check toe-in and correct.
Loose or worn steering linkage parts - Inspect and replace as required.
Front wheel bearings are defective or improperly adjusted - Change or adjust bearings correctly.

Electrical System Troubleshooting
Battery is not charging

Electrical wire connections are loose or corroded - Tighten or service connections.
Battery terminal clamps are faulty - Replace terminal clamps.
Dead cell in battery - Install a new battery.
Belt is defective or loose - Adjust belt tension or change the belt.

Starter cranks slow

Battery capacity is low - Recharge the battery.
Battery does not hold charge - Battery needs to be serviced or replaced.
Bad terminals or disconnected battery cables - Connect cables correctly or replace terminals.

Starter motor won't turn

Battery is low or faulty - Battery needs to be recharged or replaced.
Wiring harness is disconnected or improperly connected - Check wiring harness and connect as required.
Low battery voltage - Recharge the battery.
Damaged starter motor - Repair or replace starter.



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