M A E D A Mini-Crawler Crane Section 5 – PERIODIC MAINTENANCE
3/2019 MC305C-3 5-49
4. Pull out the element (3).
Fig. 5-83
5. Cover the duct entrance located at the back
of the air cleaner body (4) with a clean cloth
or tape, to keep impurities out of the duct
entrance.
6. Clean the inside of the air cleaner body (4).
7. Clean the inside of the dust pan (2) and
rubber cup (5).
Fig. 5-84
8. Remove the cloth or tape from the air
connector at the back of the air cleaner body
(4).
9. Insert a new element (3) into the air cleaner
body (4).
10. Install the dust pan (2) to the air cleaner body
(4) with a "TOP" mark faced upward, and
secure it with the two clamps (1).
11. See "Installing Machinery Cover" on page
5-19 and install the machinery cover.
12. See "OUTRIGGER STOWING" on page 4-45
and rotate the outriggers inward to stow
them.
Maintenance Every 1000 Hours
Coolant Replacement and Internal
Cleaning
WARNING!
• Coolant will be at elevated temperatures
immediately after engine operation, which
urges you not to drain coolant. Always
perform coolant draining with the engine
cold.
• DO NOT remove the radiator cap if radiator
coolant is hot. Potential gush of boiling
water may occur if disregarded. Cap removal
is allowed when the water drops in
temperature. Be sure to relieve internal
pressure by slowly rotating the filler cap
before cap removal.
• DO NOT stand in front of and behind the
machine when starting the engine for
cooling system cleaning. Failure to stand
aside of the machine may pose a danger in
the event of a sudden movement of the
machine.
• Keep antifreeze from flame. Antifreeze is a
flammable solution.
DO NOT smoke when handling antifreeze.
CAUTION:
• Always use tap water for coolant. Contact Us
or our sales service agency if river water,
well water, or water through the small
water-supply system is necessarily
substituted for tap water.
• A mixing ratio of antifreeze is to be
controlled by the concentration meter.
Cooling system cleaning and antifreeze
replacement should conform to the cycles
specified in the following table.
Cooling system cleaning and
antifreeze replacement
Anti-corrosive
all-season type
Annually or every 1000 hours
Perform cooling system cleaning and antifreeze
replacement with the machine in a horizontal
position.
A mixing ratio of antifreeze varies with
temperature. Antifreeze as a volume ratio is min.
30% to yield anticorrosive effect.
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