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3. Periodic Maintenance
WARNING
Periodic maintenance shall be performed
by qualified service technicians.
3‒1 Monthly and Annual Inspection
• Perform a monthly and annual inspection
referring to the separate service manual.
‒ Depending on the laws of the country in
which the machine is being used, keep
the records of the checks for the required
number of years.
‒ For any doubts you may have about
handling, inspection or spare parts, contact
AICHI or an AICHI dealer.
‒ Refer to the separate service manual for what
must be checked regularly.
• If the machine has not been used for over one
month, make sure to perform the monthly
inspection before use.
3‒2 Crawler Tracks
As slack will form on the crawler tracks due to
friction etc., periodically adjust the tension of the
tracks.
If the tension is not appropriate, track
detachment may occur.
WARNING
• Do not get on the platform while adjusting
the tracks. Failure to avoid this hazard
could result in a fall accident and serious
injury.
• Do not enter under the platform, boom,
tracks, and chassis while adjusting the
tracks. Failure to avoid these hazards could
result in crush accidents and serious injury.
3‒2‒1 Adjustment Method
A grease cylinder for tension adjustment of the
crawler track is located in the work opening on
the left and right sides of the chassis frame.
Work opening for tension adjustment
M179B62-1
Fig. 7‒7
Set up the machine on a firm level surface.
Retract the boom fully and rotate the boom to
the right or left side so that it is at right angles
with the chassis.
Set the boom stand (Fig. 7‒8, B) and the wood
block (Fig. 7‒8, A) to prop up the first boom
end. Use the wood block that is wider than the
width of first boom end.
Make sure the stand is stable.
A
B
M179B72-1
Fig. 7‒8
WARNING
Fixate the stand with brace members so
that the stand does not fall over during
operation.
Using the lower controls, lower the boom to lift
up the track 30 ‒ 50 mm above the ground.
30mm ‒ 50mm
M179B82-1
Fig. 7‒9
WARNING
Do not lift up the track more than 50 mm
above the ground. Excessive lifting could
cause the machine to become unstable,
resulting in death or serious injury.
