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INSULATION 2278593 - Caterpillar

2278593 INSULATION Caterpillar parts INSULATION
Alternative (cross code) number:
Caterpillar 2278593 INSULATION

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Fill Steering Hydraulic System
1. Fill the steering tank. See "Lubricant Viscosities and Refill Capacities."2. Install the filler cap.3. Start and operate the machine a few minutes to warm the oil. Stop the machine, observe the oil level and inspect for leaks.4. Maintain the oil level to the FULL mark in the sight gauge.5. Add oil if necessaryEngine Valve Lash
Adjust Valve Lash (Clearance)
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.
If the valve clearance is within 0.08 mm (.003 in) of the nominal clearance given, adjustment is not required. If the clearance is not within these limits, set the clearance as given in the chart. Refer to next topic Engine Valve Rotators before installing the valve covers.Refer to the Service Manual or your Caterpillar dealer for the complete valve adjustment procedure.Engine Valve Rotators
When inspecting the valve rotators, protective glasses or face shield and protective clothing must be worn, to prevent being burned by hot oil spray.
After setting all valve clearances and before installing the valve cover:1. Start the engine.2. Run the engine at low idle. 3. Watch the top surface on each valve rotator. Each valve rotator should turn slightly each time the valve closes.If a valve fails to rotate, contact your Caterpillar dealer.Differential and Final Drives
Change Oil
The differential and final drives oil change period has been extended from 2000 hours to 4000

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