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Case IH CX-90 Troubleshooting

The Case IH CX90 tractor was manufactured between 1998 and 2002. The Case IH CX90 tractor is powered by Perkins 1004.40T 4-cylinder direct injection turbocharged diesel engine. A 243.5 cubic inches (4 L) engine has a cylinder bore of 3.93" (100 mm), piston stroke of 5.00" (127 mm), and rated power of 84 hp (62.6 kW).

The Case IH CX90 is fitted with a 3 transmission options: 8x8 synchro-shuttle transmission, 16x8 powershift transmission, or 24x12 powershift transmission with creeper. The maximum forward speed - 24.4 mph (39.2 km/h), maximum reverse speed - 22.1 mph (35.5 km/h). The open center hydraulic system includes a gear pump with rated fluid flow of 15.7 gal/min (59.4 l/min). The main relief pressure is 173 bar (2500 psi).

The tractor is equipped with a hydrostatic power steering, differential hydraulic wet disc brakes, 7.50x16 (2WD) or 12.4R24 (4WD) front tyres, and 16.9-30 (2WD) or 16.9R34 (4WD) rear tyres. The wheelbase is 92.3" (2340 mm) for 2-wheel drive tractors and 93.7" (2370 mm) for 4-wheel drive tractors.

Engine Troubleshooting
Engine starts hard or won't start

Air trapped in fuel system - Bleed air.
Dirty fuel filter - Change filter element.
Defective injection nozzle - Test injection nozzles and change if necessary.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is wrong - Adjust to proper valve clearance.
Fuel injection pump damage - Replace or rebuild injection pump.

Engine starts and immediately shuts off

Dirty air filter - Clean or change.
Fuel filter element is clogged - Clean the filter element.
Problems with fuel injection pump tightness - Inspect fuel injection pump for leaks.
Defective fuel injectors - Test and replace fuel injectors if necessary.
Fuel injection pump malfunctioning - Replace or repair injection pump.

Engine shuts off suddenly while running

Engine is not warmed up to the required temperature - Warm up engine as required.
Fuel filter element is dirty - Service the filter.
Air in the fuel lines - Bleed the fuel lines.
Fuel injection nozzles are faulty or clogged - Service or change injection nozzles.
Wrong setting of fuel injection pump timing - Use the correct fuel injection pump timing adjustment.

Engine stalls while idling

Improperly adjusted low idle speed - Correct low idle adjustment.
Fuel injection pump is not operating properly - Change pump or rebuild it.
Fuel injector fault - Replace fuel injectors.
Valve clearance is wrong - Correct valve clearance.

Engine lacks power

Dirty air filter - Clean air cleaner element.
Clogged or burnt injection nozzle - Test injection nozzles and change if necessary.
Incorrect fuel injection pressure - Check the fuel injection pressure and adjust if necessary.
Valve clearance is not correct - Correct valve clearance.
Improperly adjusted low idle speed - Adjust the low idle speed.
Dirt in the fuel hoses or lines - Service fuel lines and hoses.
Cylinder head gasket defective - Install a new gasket.
Leaking or damaged piston rings - Replace piston rings.

Engine overheats

Low coolant level - Fill radiator to proper level and check components for faults.
Low engine oil level - Check and refill engine oil.
Defective radiator cap or clogged radiator fins - Replace cap or clean radiator.
Fan belt is broken or worn - Install new fan belt.
Diesel engine is overloaded - Load reducing is recommended.

Oil pressure is insufficient

Low oil level - Checking oil level and add if necessary.
Clogged oil filter element - Replace or service engine oil filter.
Incorrect engine oil Drain crankcase and refill with correct oil.
Crankshaft bearing has excessive oil clearance - Change bearings.
Worn oil pump - Repair or replace.

Engine knocking or noise

Engine oil level is insufficient - Need to add engine oil.
Engine is not warmed up to the required temperature - Warm up to required temperature.
Improper setting of fuel injection pump timing - Adjust as recommended.
Incorrect low idle setting - Adjust the low idle speed.
Fuel injectors are dirty or defective - Change or clean fuel injectors.
Connecting rod is worn or not aligned - Connecting rod needs to be replaced or aligned.
Pistons are scored or worn - Replace the pistons as required.

Transmission Troubleshooting
Low transmission oil pressure

Transmission oil level is low - Fill up the transmission oil.
Transmission oil filter element clogging (if equipped) - Clean or replace the transmission filter.
Relief valve malfunction - Change relief valve.

Transmission is excessively noisy

Transmission oil insufficient - Fill up the transmission oil.
Transmission oil contamination - Change the oil.
Defective gears or improper backlash - Adjust backlash properly or replace the gears.
Bearings are cracked or worn - Bearings need to be changed.
Shift forks are worn or bent - Install new shift forks.
Shaft splines are worn or damaged - Install a new shaft.

Gear hard to shift

Gear shift linkage is worn or rusty - Lubricate or replace the shift linkage.
Worn or damaged gear shift forks - Replace the shift forks.
Worn gear shifting mechanism - Repair or change worn components if necessary.
Clutch is worn or not adjusted - Clutch needs to be replaced or adjusted.

Transmission fluid leaking

Too much oil in transmission - Drain the excess oil.
Seals or gaskets are worn - Replace worn seal or gaskets.

Hydraulics Troubleshooting
Hydraulic fluid pressure is low

Hydraulic oil level low - Need to add oil.
Dirty hydraulic fluid filter element - Replace filter element or clean if required.
Hydraulic pump failure - Install a new hydraulic fluid pump.
Incorrect adjusted hydraulic control valve - Adjust correctly.
Broken hydraulic cylinder - Install a new hydraulic cylinder or repair it.
Leaking hydraulic pipes - Inspect hydraulic system for leaks and repair it.

Hydraulic system is overheated

Main relief valve malfunction - Change relief valve.
Wrong hydraulic oil type - Fill up with the correct type of oil.
Hydraulic oil is dirty - Hydraulic oil change required.
There is air in the hydraulic system - Bleed hydraulic system.

Hitch not lifting or hitch lifts slowly

Hitch is under excessive load - Reduce hitch load.
Hydraulic oil level low - Checking hydraulic oil level and add if necessary.
Hydraulic fluid filter element is clogged - Change hydraulic filter element or clean if necessary.
Hydraulic pump is defective - Replace or repair hydraulic fluid pump.
Damaged main relief valve - Relief valve must be changed.
Hydraulic spool valve is defective - Repair or replace the valve.
Hydraulic cylinder malfunction - Install a new hydraulic cylinder or repair it.
Suction line is broken or disconnected - Connect or replace.

Hitch won't drop or drops slowly

Hydraulic spool valve is out of adjustment - Spool valve adjustment required.
Broken hydraulic cylinder - Replace or repair hydraulic cylinder.
The hitch has not been adjusted - Need to make adjustments.
Hitch cross shaft is damaged - Change the shaft.

Hitch lift or drop is not smoothly

There is air in the hydraulic system - Bleed hydraulic system.
Hydraulic fluid is contaminated - Fill up with new hydraulic fluid.
Damaged hydraulic pump - Install a new hydraulic fluid pump.
Faulty hydraulic control valve - Repair or replace the valve.
Damaged hydraulic cylinder - Repair or change hydraulic cylinder.

Steering Troubleshooting
Steering is stiff

Incorrectly fitted or worn steering column - Refit or replace the steering column.
Air in steering system - Bleed the steering system.
Improper toe-in - Adjust toe-in properly.
Front tyres are worn unevenly - Install new tyres.
Defective hydraulic steering pump - Install a new hydraulic steering pump.
Steering pump control valve is worn or stuck - Install a new flow control valve or clean it.
Low steering oil level - Fill up the steering oil.

Excessive steering wheel free play

Steering column coupling or shaft has maximum wear - Replace faulty part.
Worn steering pump - Check the steering pump and replace if necessary.
Steering linkage components are loose or worn - Check and replace as required.

Tractor is pulling to left or right

Front tyres wear unevenly - Change the tyres.
Incorrect toe-in - Check and adjust toe-in.
Worn or loose steering linkage joints - Check and replace as required.
Incorrectly adjusted or damaged front wheel bearings - Replace or adjust the bearings correctly.

Electrical System Troubleshooting
Battery is not charging

Wiring connections are loose or corroded - Tighten or service cable connections.
Battery terminal connectors are defective - Change terminal connectors.
Battery is worn - Battery change required.
Defective or loose belt - Adjust belt tension or change the belt.

Starter cranks slowly

Low battery voltage - Battery is drained, charge it.
Battery is not holding charge - Service charging system or replace battery.
Disconnected battery cables or bad terminals - Check wiring connections and replace or clean terminals.

Starter is not working

Battery is drained or worn - Need to charge or replace the battery.
Wiring is improperly connected or disconnected - Check wiring and connect properly.
Low battery voltage - Battery is drained, charge it.
Starter motor failing - Repair or replace starter.



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