Cleaning Primary Air Filter; Replacing Secondary Air Filter - MacDon M1170 Operator's Manual

Cleaning Primary Air Filter

The engine air cleaner's primary filter should be replaced after three cleanings or at the specified interval. The secondary
element should be replaced every third time the primary element is changed. Refer to
and Maintenance Schedule, page 252
1. Hold a bright light inside element and check carefully for holes. Vibration would quickly wear a hole in the filter.
2. Check filter gasket for cracks, tears, or other signs of damage.
3. Check element for oil or soot contamination.
4. 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 secondary filter element should NEVER be cleaned, only replaced.
• 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 steps should be followed. If any of the
conditions described in these steps are found, the filter element MUST be replaced.
5. If secondary element passes inspection, use compressed air not exceeding 270 kPa (40 psi) and a dry element cleaner
gun to clean the primary element. Hold nozzle next to inner surface only and move up and down on pleats.
NOTE:
After three cleanings (or at the specified interval), replace the primary element.
6. Repeat inspection before installing. Refer to

Replacing Secondary Air Filter

IMPORTANT:
• The secondary filter element (A) should never be cleaned, only replaced. Do NOT remove the secondary filter element
unless it needs replacing.
• Replace secondary element annually or after every third primary filter change, even if it appears clean.
• If replacing secondary element, a further inspection may be necessary.
• 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.
1. Remove the primary filter. Refer to
Primary Air Filter, page
IMPORTANT:
When replacing secondary filter, reinsert new filter as soon
as possible to prevent dirt from entering engine intake.
214733
MAINTENANCE AND SERVICING
for the required interval.
Installing Engine Primary Air Filter, page
Removing Engine
313.
A
Figure 5.96: Secondary Air Filter
316
5.2 Windrower Break-In Inspections
315.
Revision A