Removing and installing secondary air filter – MacDon M155 Operators Manual User Manual
Page 318
IMPORTANT:
Air filter element cleaning is NOT recommended due to the possible degradation of the element
material.
If cleaning is performed, there are several risks involved and the following procedures should be
followed. If any of the following conditions are found, the filter element MUST be replaced.
1. Hold a bright light inside element, and check carefully for holes.
2. Check outer screen for dents. Vibration would quickly wear a hole in the filter.
3. Check filter gasket for cracks, tears, or other signs of damage.
4. Check element for oil or soot contamination.
5. Check the secondary element for cleanliness. If there is visible dirt on the secondary element, replace both
primary and secondary elements. Do NOT clean.
IMPORTANT:
The air cleaner’s primary (outer) filter element should be replaced after three cleanings or at the specified
interval. The secondary (inner) element should be replaced every third time the primary element is changed.
Refer to Section
5.7.11 Maintenance Schedule, page 382
for the required interval.
6. If secondary element passes inspection, clean primary element as follows:
a. Use compressed air NOT exceeding 60 psi (400 kPa), and a Dry Element Cleaner Gun.
b. Hold nozzle next to inner surface only, and move up and down on pleats.
c. After three cleaning’s (or at the specified interval), replace the primary element.
7. Repeat inspection before installing.
Removing and Installing Secondary Air Filter
NOTE: • The secondary element (A) should NEVER be
cleaned — only replaced.
• Do NOT remove the secondary filter element
unless it needs replacing.
• Replace safety element annually or after
every third primary filter change, even if it
appears clean.
• If you are changing secondary element
because it looked dirty, a further inspection will
be required.
• Examine filter canister for cracks and replace
as necessary.
• Ensure canister retaining latches are secure.
Ensure filter sealing surfaces are soft, flexible
and sealing, not hard and allowing debris
through to secondary filter.
Figure 5.79: Engine Air Cleaner
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Revision A