Replace Rubber Crawler; Removing Rubber Crawler - Hitachi ZAXIS 30U-5N Operator's Manual

Replace Rubber Crawler

--- as required
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WARNING:
 Do not loosen valve (1) too quickly or too much as
high-pressure grease in the adjusting cylinder may
spout out. Loosen carefully, keeping body parts and
face away from valve (1). Never loosen grease fitting
(2).
 When removing the rubber track, do not allow
anyone to stand in front of the front idler. During
this procedure, the high power track adjuster may
suddenly release the front idler with extreme force,
potentially resulting in personal injury or death.
 After the rubber track is removed, the front idle will
become free to remove. If the front idle comes off
unexpectedly, personal injury and/or death may
result. Be sure to remove the rubber track only after
taking appropriate measures to prevent the front
idler from coming off.

Removing Rubber Crawler

1. Lower the bucket and blade to raise one track off
ground, as shown. Place blocks under machine frame to
support the machine.
2. Slowly turn valve (1) counterclockwise to allow grease to
escape from the grease outlet.
3. Insert two or three steel pipes into the gaps among
lower rollers, track frame and rubber track and slowly
rotate the track in reverse to lift the rubber track off the
idler. Apply horizontal force to pry the rubber track off
the idler. Before completely removing the rubber track
from the front idler, take an appropriate measure to
prevent the front idler from coming off. Then, remove
the rubber track.
MAINTENANCE
2
Direction of Rotation
7-82
Grease Outlet
1
Steel Pipes
M1M7-04-006
M1LA-07-036
M503-07-062