POWER TRAIN MLC650 SERVICE/MAINTENANCE MANUAL
7-8
Published 09-09-16, Control # 229-09
AIR CLEANER—TIER 3
See Figure 7-5 for location of components.
The air filter requires periodic maintenance. Use the service
indicator to determine when to change the filter element.
This occurs when the yellow cylinder enters the red change
zone. Never open the air cleaner to check the condition of
the filter element, as this could allow unfiltered air to enter
the engine.
The following air filter conditions may cause engine damage:
• Clogged air cleaner filters will prevent adequate air flow
to the engine, causing poor starting and increased
exhaust emissions.
• An improperly installed or damaged air cleaner can
allow dirty air to be drawn directly into the engine.
Inspection
To maintain engine protection and filter service life, inspect
the filters at daily and monthly intervals as described.
Daily
Check the service indicator with the engine running. The
indicator gives a visual indication when it is time to replace
the filters.
A yellow flag in the indicator window extends as the filters
become plugged. Replace filters when the yellow indicator
reaches the red zone at the end of the indicator.
The yellow flag remains locked in place after the engine is
stopped. The indicator reset button on the top of the indicator
can be pressed at any time. When the engine is running, the
indicator will return to the proper reading.
Monthly
Complete the following actions monthly:
• Inspect the rubber reducer and the elbow between the
air cleaner and the engine for cracks or other damage
that might allow unfiltered air to enter the engine.
Replace the worn or damaged parts.
• Check the housing for dents or other damage that may
allow unfiltered air to enter the engine. Replace the
housing if damaged.
• Check for loose clamps and bands. Tighten any loose
parts.
• Inspect the inlet cap for obstructions. Clean as required.
• Inspect the pre-cleaner dust spout for obstructions.
CAUTION
Avoid Engine Damage!
• Stop the engine before servicing the air cleaner. Oth-
erwise, unfiltered air will be drawn directly into the
engine. Never operate the engine without an air filter
installed in the air cleaner.
• Before servicing, clean the fittings, mounting hard-
ware, and the area around the component(s) to be
removed.
• Replace the secondary filter as quickly as possible to
avoid engine ingestion of contaminants.
• Do not attempt to clean and reuse the old filters. Dis-
card old filters and install new filters. Cleaning filter
elements by impact or compressed air voids the war-
ranty and can degrade or damage the air filter, lead-
ing to engine damage.
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