Specifications

SEBU7858-03 133
Maintenance Section
Engine Air Filter Primary Element - Clean/Replace
Service the air
cleaner filter element when the
yellow piston on the engine air filter service
indicator enters the red zone or the indicator
reads 63.5 cm (
25 inch) of water. Refer to
Operation and Maintenance Manual, “Engine Air
Filter Service Indicator - Inspect”.
g00102316
Illustr
ation 165
1. Remove cover (1) for the air filter housing.
2. Remove primary filter element (2) from the air
filter housing.
3. Clean the inside of the air filter housing.
4. If the m
achine is equipped with a vacuator valve,
clean the vacuator valve on the cover for the air
filter housing.
5. Install a clean primary air fi lter element. Install the
cover for the air filter housing.
Note: Refer to “Cleaning Primary Air Filter Elements”.
6. Rese
t the engine air filter service indicator.
If the yellow piston in the indicator moves into the red
zone
after starting the engine or the exhaust smoke
is still black after installation of a clean primary filter
element, install a new primary filter element. If the
pis
ton remains in the red zone replace the secondary
element.
Cleaning Primary Air Filter
Elements
NOTICE
Caterpillar recommends certified air filter cleaning ser-
vices available at participating Caterpillar dealers. The
Caterpillar cleaning process uses proven procedures
to assure consistent quality and sufficient filter life.
Observe the following guidelines if you attempt to
clean the filter element:
Donottaporstrikethefilter element in order to re-
move dust.
Do not wash the filter element.
Use low pressure compressed air in order to remove
the dust from the filter element. Air pressure must not
exceed 207 k Pa (30 psi). Direct the air flow up the
pleats and down the pleats from the inside of the filter
element. Take extreme care in order to avoid damage
to the pleats.
Do not use air filters with damaged pleats, gaskets, or
seals. Dirt entering the engine will cause damage to
engine components.
The primary air filter element can be used up to
six times if the element is properly cleaned and
inspected. When the primary air filter element is
cleaned, check for rips or tears in the filter material.
The primary air filter element should be replaced at
least one time per year. This replacement should be
performed regardless of the number of cleanings.
NOTICE
Do not clean the air filter elements by bumping or tap-
ping. This could damage the seals. Do not use ele-
ments with damaged pleats, gaskets, or seals. Dam-
aged elements will allow dirt to pass through. Engine
damage could result.
Visually inspect the primary air filter elements before
cleaning. Inspect the air filter elements for damage
to the seal, the gaskets, and the outer cover. Discard
any damaged air filter elements.
There are two common methods that are used to
clean primary air filter elements:
•
Pressurized air
•
Vacuum cleaning