Home / Farm Tractors / Case IH Tractors / Case IH 856XL

Case IH 856 XL Troubleshooting

The Case IH 856 XL utility tractor was manufactured from 1985 to 1987. The Case IH 856XL powertrain system components: a 239 cu.in (3.9 L) International Harvester DT239 four-cylinder direct injection turbocharged diesel engine and IH Total-synchron transmission with 16 forward and 8 reverse gears.

The engine has a cylinder bore of 3.87" (98.4 mm), piston stroke of 5.06" (128.5 mm), and rated power of 85 hp (63.4 kW). The maximum travel speed (forward/reverse): 15.7 mph (25.3 kph) and 10.8 mph (17.4 kph). The open center hydraulic system has a gear pump with a rated capacity of 6.6 gal/min (25 l/min).

The hydraulic pressure is 170 bar (2465 psi). The 2-wheel drive models are equipped with 10.00x16 front tires and 16.9R34 rear tires. The 13.6x24 front tires and 16.9R34 rear tires are used for tractors with 4-wheel drive. The wheelbase is 93.9 (2380 mm) for 2WD models and 92.4 (2340 mm) for 4WD models.

Diesel Engine Troubleshooting
Engine hard to start or won't start

Air in fuel system - Bleed fuel system.
Fuel filter element is dirty - Replace filter element.
Fuel injection nozzles are dirty or defective - Clean or change injection nozzles.
Water in the fuel system - Change fuel and repair fuel system.
Valve clearance is out of adjustment - Adjust to proper valve clearance.
Fuel injection pump is faulty - Repair or install new pump.

Diesel starts and stops

Air filter clogged - Service or replace the air filter.
Fuel filter element clogging - Clean the filter or install new filter element.
Fuel injection pump is leaking - Repair any leaks.
Clogged or defective injectors - Inspect fuel injectors and change as required.
Fuel injection pump is not working correctly - Rebuild or install a new injection pump.

Engine shuts off suddenly while running

Engine is not fully warmed up - Warm up to required temperature.
Clogged fuel filter - Install new filter element.
Air in the fuel system - Air bleeding.
Fuel injection nozzles are dirty or defective - Replace injection nozzles.
Incorrect adjustment of fuel injection pump timing - Adjust as recommended.

Engine stalling at idle

Incorrect low idle speed adjustment - Adjust low idle speed.
Fuel injection pump is faulty - Replace or repair injection pump.
Dirty or defective injectors - Inspect fuel injectors and change as required.
Improper valve clearance - Adjust to proper valve clearance.

Engine loses power

Clogged air filter - Clean or replace element.
Fuel injection nozzles fault - Check injection nozzles and replace if required.
Improper fuel injection pressure - Check the fuel injection pressure and adjust if necessary.
Excessive valve clearance - Adjust valve clearance according to specifications.
Incorrect low idle setting - Test and adjust.
Fuel hoses or lines are dirty - Service fuel hoses and lines.
Defective cylinder head gasket - Cylinder-head gasket replacement required.
Piston rings are damaged or leaking - Change piston rings.

Engine overheated

Coolant level is low - The cooling system needs to be refilled and checked for faults.
Engine oil level is insufficient - Checking oil level and add if necessary.
Clogged radiator fins or damaged radiator cap - Clean radiator or change cap.
Loose or defective fan belt - If necessary, replace the belt.
Engine is overloaded - Reduce load on the engine.

Low oil pressure

Insufficient engine oil - Check oil level and add oil as required.
Oil filter element clogged - Service or change engine oil filter element.
Oil grade or viscosity is wrong - Drain and refill with oil of correct grade and viscosity.
Incorrect crankshaft bearing oil clearance - Replace bearings.
Oil pump failure - Repair or replace.

Abnormal engine noise or knocking

Engine oil level low - Fill the crankcase with engine oil.
Low coolant temperature - Warm up engine as required.
Fuel injection pump timing is wrong - Use the correct fuel injection pump timing adjustment.
Incorrectly set low idle speed - Adjust the low idle speed.
Fuel injectors are dirty or defective - Inspect fuel injectors and change as required.
Connecting rod failure or misalignment - Connecting rod needs to be aligned or changed.
Scored or worn pistons - Install new pistons.

Transmission Troubleshooting
Low transmission oil pressure

Low fluid level - Check and refill the transmission fluid.
Dirty transmission oil filter element (if equipped) - Service or replace the transmission oil filter.
Stuck relief valve - Change the valve.

Excessive transmission noise

Transmission oil insufficient - Fill the transmission housing to proper oil level.
Transmission oil contamination - Transmission oil change required.
Worn gears or incorrect backlash - Replace gears or adjust backlash correctly.
Worn or cracked bearings - Change the bearings.
Damaged or worn gear shift forks - Shift forks need to be replaced.
Shaft splines are stuck or worn out - Shaft need to be changed.

Hard shifting

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

Transmission oil leakage

High transmission fluid level - Drain the excess fluid.
Broken seals or gaskets - Seals and gaskets need to be replaced.

Hydraulics Troubleshooting
Hydraulic oil pressure is low

Insufficient hydraulic oil - Need to add oil.
Clogged hydraulic fluid filter element - Service or replace the hydraulic filter.
Hydraulic pump not working - Repair or replace hydraulic oil pump.
Hydraulic control valve block is out of adjustment - Control valve needs to be adjusted.
Defective hydraulic cylinder - Repair or change hydraulic cylinder.
Leaking hydraulic lines - Inspect hydraulic system for leaks and repair it.

Excessive hydraulic system heat

Main relief valve malfunction - Replace relief valve.
Improper hydraulic fluid type - Use the proper type of hydraulic fluid.
Hydraulic fluid is dirty - Hydraulic fluid change required.
Air trapped in hydraulic system - Bleed air from system.

Hitch can't lift or lifts too slowly

Excessive hitch loading - Reduce the load is required.
Low hydraulic oil level - Check and refill the hydraulic oil.
Clogged hydraulic fluid filter - Service or replace the hydraulic filter.
Hydraulic pump failure - Install a new hydraulic oil pump.
Defective main relief valve - Change relief valve.
Defective hydraulic spool valve block - Replace or repair the valve.
Hydraulic cylinder not working - Change or repair hydraulic cylinder.
Disconnected or broken suction pipe - Connect or change pipe.

Hitch not lowering or hitch lowers slowly

Incorrect setting hydraulic control valve block - Set correctly.
Hydraulic cylinder not working - Repair or change hydraulic cylinder.
The three-point hitch is not adjusted - Adjustment is required.
Hitch rock shaft is worn Change the shaft.

Hitch jerks when drop or lift

Air trapped in hydraulic system - Bleed air from system.
Hydraulic oil contamination - Change the oil.
Hydraulic pump is defective - Replace or repair hydraulic oil pump.
Defective hydraulic control valve - Replace or repair the valve.
Hydraulic cylinder is faulty - Replace or repair hydraulic cylinder.

Steering System Troubleshooting
Heavy steering

Incorrectly fitted or worn steering column - Refit or replace the steering column.
Air in the hydraulic steering system - Bleed air from system.
Incorrect toe-in - Adjust toe-in wheels.
Tires have uneven wear - Replace the tires.
Faulty steering pump - Replace or repair steering pump.
Pump flow control valve is damaged or stuck - Service or change control valve.
Low steering fluid level - Fill the steering system with fluid.

Excessive play in steering

Steering column coupling or shaft has maximum wear - Replace faulty component.
Defective hydraulic steering pump - Check the steering pump and replace if necessary.
Steering linkage assembly is worn or loose - Repair or replace steering linkage.

Front wheels wander to left or right

Front tires wear unevenly - Change the tires.
Improper toe-in - Adjust toe-in properly.
Steering linkage assembly is worn or loose - Change or repair steering linkage.
Front wheel bearings are defective or improperly adjusted - Adjust properly or change bearings.

Electrical Troubleshooting
Battery won’t charge

Electrical cable connections are corroded or loose - Clean or tighten connections.
Faulty battery terminal clamps - Terminal clamps need to be replaced.
Dead cell in battery - Install a new battery.
Loose or defective belt - Change belt or adjust belt tension.

Starter motor turns slow

Low battery output - Charge the battery.
Battery does not hold charge - Service or change the battery.
Disconnected wires or corroded battery terminals - Check wire connections and change or service terminals.

Starter will not crank

Battery is discharged or defective - Change or recharge battery.
Battery wires are disconnected or incorrectly connected - Check wires and connect correctly.
Battery voltage is low - Battery is drained, charge it.
Starter motor failing - Repair or replace starter.



Farm Tractors Technical Specifications
JD 1026R JD 3650 JD 6400 JD 7810
FORD 1320 FORD 2810 FORD 3930 FORD 5600
MF 250 MF 690 MF 3060 MF 6180
NH TC48DA NH M100 NH T7550 NH 8560
CASE IH 495 CASE IH 1255XL CASE IH 2140 CASE IH 2294