Komatsu AX20 Operation & Maintenance Manual page 133

n CHECK AIR CLEANER AND REPLACE FILTER IF DIRTY
• Do not replace an air filter on a diesel engine with a filter intended for a gasoline engine or
vice-versa: radial seal style filters are NOT interchangeable between diesel and gasoline
engines.
• Never clean the radial seal air filter or use compressed air on it; this will damage the filter.
Replace the air filter if dirty.
• It is important that all air cleaner latches are present and in good working condition as they
retain the air filter element in place. DO NOT operate the lift truck unless all latches are present
and in good working condition.
NOTICE
The engine warranty will be voided if improper or aftermarket elements are used.
REPLACE RADIAL SEAL AIR FILTER
1. Release latches to remove air cleaner housing cover.
2. Gently remove filter element, taking care not to dislodge dirt
and dust. Avoid knocking the filter against the housing. If your
air cleaner has a safety filter, replace it every third primary
filter change. Remove the safety filter as you would the
primary filter. Make sure you cover the air cleaner outlet tube
to avoid any unfiltered contaminant dropping into the engine.
3. Thoroughly clean air cleaner housing sealing surface and
outlet tube outer diameter. Then clean the inside of the outlet
tube using a clean cloth.
4. Inspect the old filter for leak clues. A streak of dust on the
clean side of the filter is a telltale sign. Remove any cause of
leaks before installing new filter.
5. Inspect the new filter for damage, paying careful attention to the inside of the open end, which is the sealing
area. Never install a damaged filter.
6. Insert new radial seal filter carefully with open end towards air cleaner housing.
Seat filter completely by hand, making certain it is completely into the air cleaner
housing before securing the cover in place. Each new element sealing surface is
coated with a dry lubricant to aid in sealing. DO NOT USE COVER TO FORCE
FILTER ELEMENT INTO PLACE. THIS WILL DAMAGE THE FILTER AND THE
HOUSING. When seating element, apply hand pressure to outer edge of filter, not
in the flexible center.
7. Once element is seated and sealed, reinstall cover and secure the latches.
8. Check all clamps, bolts and connections for tightness.
n (GASOLINE ENGINE) INSPECT AND CLEAN FUEL FILTER SOCK
Remark
The fuel filter sock is not a replaceable item.
Never clean or replace air cleaner while the engine is running.
31. MAINTENANCE
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