Air Cleaner Servicing
The air cleaner contains a primary and secondary dry
filter element (fig. 3-54). An air filter restriction indicator
is located at the rear of the air filter housing to alert the
operator of the need to service the filters. When a red band
appears in the air filter restriction indicator, secure the
compressor and service the filters.
The primary element is cleanable by using
compressed air. When the element is cleaned, never let
the air pressure exceed 30 psi. The secondary filter is not
cleanable and should be replaced when necessary.
Reverse flush the primary element by directing
compressed air up from the inside out. Continue reverse
flushing until all dust is removed. Should any oil or
greasy dirt remain on the filter surface, the element
should be replaced. When the element is satisfactorily
cleaned, inspect it thoroughly before installation.
Inspection procedures are as follows:
Place a bright light inside the element to inspect it
for damage. Concentrated light will shine through
the element and disclose any holes. A damaged
element is to be replaced.
Inspect all gaskets and gasket contact surfaces of
the housing. Should faulty gaskets be evident.
replace them immediately.
After the element has been installed, inspect and
tighten all air inlet connections before resuming
Do not strike the element against any hard
surface to dislodge dust. This will damage the
sealing surfaces and possibly rupture the
Main Oil Filter Servicing
The main oil filter is a replaceable cartridge. The
servicing of the filter is required as indicated by the
maintenance indicator on the filter or each time the
compressor oil is changed. Under normal operating
conditions. the oil is changed at approximately 500
operating hours. Under severe conditions. more frequent
servicing is required.
Figure 3-54.Air filter.