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Case IH 2594 Troubleshooting

The Case IH 2594 is a 2WD (4x2) row-crop tractor. This model was manufactured between 1984 and 1988. The IH 2594 tractor is powered by Case 504BD 4-cycle 6-cylinder turbo diesel engine with a maximum power of 217 Hp (161,8 kW) at 2100 rpm.

The Case IH 2594 is fitted with 2 transmission options: 12x3 power shift transmission, and partial power shift transmission with 24 forward and 3 reverse gears. The max. forward speed - 19.3 mph (31.1 km/h), maximum reverse speed - 6.5 mph (10.5 km/h).

The closed center hydraulic system used a piston pump with a flow of 27 gpm (102.3 lpm). The hydraulic pressure is 155 bar (2250 psi). The Case International 2594 was equipped with a hydrostatic steering system and hydraulic wet disc brakes, 11.00x16 or 14Lx16 front tires, and 24.5x32 or 30.5x32 rear tires. The wheel base is 118" (2990 mm).

Engine Troubleshooting
Engine starts hard or will not start

Air in the fuel system - Air bleeding.
Clogged fuel filter - Change the filter element.
Clogged injection nozzle - Service or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
The valve clearance is incorrect - Adjust valve clearance.
Defective fuel injection pump - Change pump or rebuild it.

Engine stalls after starting

Dirty air filter element - Service air cleaner.
Fuel filter plugging - Install new filter element.
Poor fuel injection pump tightness - Look for any leaks of fuel pump Tighten it fast.
Defective fuel injectors - Replace or clean fuel injectors.
Fuel injection pump damage - Replacement or repair required.

Engine stops running suddenly

Engine has not warmed up to the recommended temperature - Warm up the engine.
Dirty fuel filter - Filter maintenance required.
Air trapped in fuel system - Bleed air.
Fuel injection nozzles fault - Install a new kit of correctly balanced nozzles.
Wrong setting of fuel injection pump timing - Adjust as recommended.

Engine stalls when idling

Incorrectly adjusted low idle speed - Adjustment required.
Faulty fuel injection pump - Rebuild or install a new injection pump.
Fuel injectors are dirty or defective - Test and replace fuel injectors if necessary.
The valve clearance is not adjusted - Check and adjust.

Diesel power loss

Dirty air filter element - Clean air cleaner element.
Clogged or defective injection nozzles - Test injection nozzles and change if necessary.
Insufficient fuel injection pressure - Repair or replace injection pump.
Excessive valve clearance - Check and adjust as required.
Too low idle RPM - Adjustment required.
Restricted fuel hoses or lines - Clean fuel lines and hoses.
Cylinder-head gasket is leaking - Change cylinder head gasket.
Damaged or leaking piston rings - Replace piston rings.

Engine overheating

Engine has a lack of coolant - The cooling system needs to be refilled and checked for faults.
Low engine oil level - Need to add engine oil.
Defective radiator cap or clogged radiator fins - Replace cap or clean radiator.
Fan belt slipping or worn - Replace the fan belt.
Engine is running overloaded - Reduce the load or operate the tractor in lower gears.

Oil pressure is low

Oil level is insufficient - Need to add oil.
Clogged oil filter element - Replace or clean engine oil filter element.
Different type of engine oil - Use oil of correct viscosity.
Crankshaft bearing has excessive oil clearance - Change bearings.
Worn oil pump - Remove and inspect oil pump.

Engine noises or knocks

Low engine oil level - Add oil to the engine crankcase.
Engine not warmed up - Warm up the engine.
Improper setting of fuel injection pump timing - Adjust as recommended.
Incorrectly adjusted low idle speed - Adjust low idling as recommended.
Clogged or defective injectors - Replace or clean fuel injectors.
Connecting rod misalignment or failure - Connecting rod needs to be aligned or changed.
Pistons are worn or broken - Pistons replacement required.

Transmission Troubleshooting
Low transmission oil pressure

Transmission oil insufficient - Fill the transmission housing to proper oil level.
Clogged transmission fluid filter (if equipped) - Service or change transmission fluid filter.
Relief valve is damaged - Replace relief valve as required.

Transmission noises

Transmission oil level is low - Fill the transmission housing to proper oil level.
Transmission fluid contamination - Transmission fluid change required.
Gears are damaged or backlash is incorrect - Adjust backlash properly or replace the gears.
Bearings are broken or worn - Replace faulty bearings.
Shift forks are bent or worn out - Shift forks need to be replaced.
Worn or stuck shaft splines - Replace defective shaft.

Gears are hard to shift

Gear shift linkage is corroded or worn - Install new shift linkage.
Worn or bent shift forks - Change defective shift forks.
Gear shifting mechanism is defective - Defective parts must be replaced.
Clutch is worn or not adjusted - Adjust or replace the clutch.

External oil leaks

Too much oil in transmission - Drain the excess oil.
Seals or gaskets are worn - Gaskets or seal need to be replaced.

Hydraulics Troubleshooting
Low hydraulic oil pressure

Insufficient hydraulic oil - Need to add oil.
Clogged hydraulic fluid filter element - Hydraulic filter maintenance required.
Faulty hydraulic pump - Repair or replace hydraulic fluid pump.
Hydraulic spool valve is not set properly - Set the spool valve properly.
Hydraulic cylinder failure - Change or repair hydraulic cylinder.
Leaking hydraulic pipes - Check the system and repair leaks.

Hydraulic system is too hot

Faulty main relief valve - Relief valve need to be replaced.
Incorrect type of hydraulic fluid - Use the correct type of fluid.
Hydraulic fluid contamination - Change hydraulic fluid.
Air in hydraulic system - Bleed air from hydraulic system.

Hitch does not raise or raises very slowly

Heavy load on the hitch - Reduce hitch load.
Insufficient hydraulic fluid - Fill the system to proper hydraulic fluid level.
Clogged hydraulic oil filter - Hydraulic filter maintenance required.
Hydraulic pump is faulty - Replace or repair hydraulic fluid pump.
Main relief valve malfunctioning - Change relief valve.
Hydraulic control valve block is damaged - Repair or replace hydraulic valve.
Hydraulic cylinder is broken - Repair or change hydraulic cylinder.
Loose or broken suction line - Tighten the pipe or replace it.

3-point hitch can't drop or drops too slowly

Hydraulic control valve block is out of adjustment - Control valve needs to be adjusted.
Faulty hydraulic cylinder - Change or repair hydraulic cylinder.
Three-point hitch has not been adjusted - The three-point hitch must be adjusted.
Worn lift arm shaft - Replace the shaft.

3-point hitch jerks when lower or lift

Air in hydraulic lines - Bleed hydraulic lines.
Dirty hydraulic fluid - The fluid must be changed.
Defective hydraulic pump - Replace or repair hydraulic fluid pump.
Hydraulic spool valve is damaged - Repair or replace hydraulic valve.
Hydraulic cylinder not working - Change or repair hydraulic cylinder.

Steering Troubleshooting
Steering is hard

Incorrectly fitted or worn steering column - Refit or replace the steering column.
Air in the hydraulic steering system - Need to bleed air.
Not adjusted toe-in - Adjust toe-in properly.
Uneven wear on front tyres - Replace the tyres.
Steering pump not working - Steering pump needs to be repaired or replaced.
Stuck or damaged steering pump control valve - Flush or change flow control valve.
Insufficient steering oil - Need to add steering oil.

Steering wheel free play is excessive

Steering column coupling or shaft has maximum wear - Replace defective part.
Steering pump failure - Replace or repair steering pump.
Loose or worn steering linkage parts - Inspect and change as required.

Front wheels wander to left or right

Uneven wear on front tires - Replace the tires.
Improper toe-in - Check and adjust toe-in.
Loose or worn steering linkage components - Replace or repair steering linkage.
Incorrectly adjusted or damaged front wheel bearings - Adjust correctly or change bearings.

Electrical System Troubleshooting
Battery does not charge

Loose or corroded wire connections - Tighten or clean connections.
Battery terminal clamps are defective - Terminal clamps should be changed.
Dead cell in battery - Use a new battery.
Belt is damaged or loose - Adjust belt tension or change the belt.

Starter turns slowly

Low battery capacity - Battery needs to be recharged.
Battery drains quickly - Service battery or replace it.
Disconnected wires or corroded battery terminals - Check cable connections and replace or service terminals.

Starter is not working

Battery is low or faulty - Change or recharge battery.
Wire harness is disconnected or incorrectly connected - Check wire harness and connect as required.
Low battery power - Battery needs to be recharged.
Starter motor is defective - Starter should be replaced.



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