Every 2000 Service Hours or 2 Years
You must read and understand the warnings and
instructions contained in the Safety Section of this
Before proceeding with this maintenance, perform all
previous maintenance interval requirements.
Engine Valve Lash
Be sure the engine cannot be started while this
maintenance is being performed. To prevent
possible injury, do not use the staring motor to turn
Hot engine components can cause burns. Allow
additional time for the engine to cool before
measuring/adjusting valve lash.
Operation of Caterpillar engines with improper valve
adjustments will reduce engine efficiency. This
reduced efficiency could result in excessive fuel
usage and/or shortened engine component life.
The procedures for engine valve lash should be
performed according to the information in the
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.
NOTE: Initial valve lash check and/or adjustment on
new or rebuilt engines is recommended at
the first scheduled oil change interval, or 400
Hours, whichever occurs first. This is due to
initial wear and seating of valve train
adjustments should be made at the Every
2000 Hour interval thereafter.
VALVE LASH SETTING
0.20 mm (.008 in)
0.45 mm (.018 in)
Adjust the valve lash to the setting given in the chart
above. Refer to the Service Manual or your Caterpillar
dealer for the complete valve adjustment procedure.
This maintenance is recommended by Caterpillar as part
of a recommended preventive maintenance schedule to
provide maximum engine life.
Refer to the Engine Service Manual or your Caterpillar
dealer for the complete procedure to perform this
Every 2000 Service Hours or 2 Year