215676
351
Revision A
1000100
A
Figure 5.59: Engine Air Cleaner Secondary Filter
Element
IMPORTANT:
Replace secondary air filter (A) every year or after every
third primary filter change (even if the secondary filter
appears clean).
8.
If the secondary air filter is dirty, inspect the primary filter
and the filter canister as follows to determine the reason
for contamination:
•
Examine the filter canister for cracks, and replace it if
necessary.
•
Ensure that the filter sealing surfaces are soft, flexible,
and sealing properly. Hard seals may allow debris
through to the secondary filter.
•
Ensure that the canister retaining latches are secure.
IMPORTANT:
•
Do
NOT
remove the secondary filter element unless it
needs replacing.
•
Do
NOT
attempt to clean the secondary element. The
secondary element
MUST
be replaced,
NOT
cleaned
and reused.
9.
If required, replace the secondary filter. For instructions, refer to
Removing and Installing Secondary Air Filter, page
10. Clean the inside of the canister housing and the end cap carefully. Dirt left in the air cleaner housing can damage the
engine.
•
Remove hardened dirt ridges wherever filter gaskets contact the cleaner housing.
•
Clean the gasket sealing surfaces of the housing. An improper gasket seal is one of the most common causes of
engine contamination.
•
Wipe every surface with a clean, water-dampened cloth.
•
Check the housing visually to make sure it is clean before putting in a new filter element.
11. Check for uneven dirt patterns on the old element. These patterns are a valuable clue to potential dust leakage or
gasket sealing problems. A pattern on the element
’
s clean side is a sign that the old element was
NOT
firmly sealed, or
that a dust leak exists.
•
Press on the fresh gasket to see if it springs back.
•
Check the gasket for correct sizing. On a radial seal element, the gasket surface is the inside diameter of the open
end cap.
•
Make sure the gasket is seating evenly. If the gasket is not forming a perfect seal, the engine will
NOT
have
complete protection.
•
Ensure that the sealing surface in the housing is clean, and that the filter element is the correct model number.
•
Identify and rectify the cause of any leaks before replacing the filter element.
Installing Primary Air Filter
Once the primary air filter has been removed and inspected, it can be replaced.
NOTE:
For the primary air filter replacement part number, refer to
8.2.4 Filter Part Numbers, page 478
.
