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HOSE AS 2559723 - Caterpillar

2559723 HOSE AS Caterpillar parts HOSE
Alternative (cross code) number:
Caterpillar 2559723 HOSE AS

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Engine Valve Lash
Check and Adjust
Initial valve lash adjustment on new, rebuilt or remanufactured engines only, is recommended at the first scheduled oil change interval, due to initial wear and seating of valve train components.
To prevent possible injury, do not use the starter motor to turn the flywheel.Hot engine components can cause burns. Allow additional time for the engine to cool before measuring valve clearance.
Measure the valve lash with the engine stopped. To obtain an accurate measurement, allow at least 20 minutes for the valves to cool to engine cylinder head and block temperature.
When the valve lash (clearance) is checked, an adjustment is NOT necessary if the measurement is within the range given in the "Valve Clearance Check" chart shown below. If the measurement is outside of the valve clearance check range shown above, an adjustment is necessary.Set the clearance to the nominal clearance given in the "Valve Clearance Setting" chart shown below. Refer to the Service Manual or your Caterpillar dealer for the complete valve adjustment procedure.Thermostat
Replace Thermostat and Gasket
At operating temperature, the engine coolant is hot and under pressure.Steam can cause personal injury.Check the coolant level only after the engine has been stopped and the filler cap is cool enough to touch with your bare hand.Remove the filler cap slowly to relieve pressure.Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.
1. Loosen the filler cap slowly to relieve any pressure and remove the cap.2. Drain the coolant from the cooling system to a level below the thermostat housing.3. Loosen the hose clamps and remove the radiator hose from the thermostat housing. 4. Remove the thermostat housing from the engine block. 5. Remove the thermostat and gasket from the thermostat housing.6. Install new thermostat in the thermostat housing.7. Install a new gasket and the thermostat housing on the engine block.8. Install the radiator hose and tighten the hose clamps.9. Add coolant to the cooling system to bring it to the proper level.10. Start the engine and inspect for leaks and proper operating temperature.Turbocharger
Check - Repair or Replace if Necessary
1. Remove the exhaust outlet piping from the turbocharger.2. Turn the turbine and compressor wheel by hand. The assembly should turn freely.3. If the assembly does not turn freely, refer to the Service Manual or consult your Caterpillar dealer.

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