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Removal and Installation of Tire
WARNING: Wheel with tire is a very heavy part so that
removal and installation of tire is hazardous and dif-
ficult work. In addition, a crane to lift a tire is required
when removing or installing the tire to the wheel.
Consult your nearest Hitachi dealer or a professional
tire sales shop for tire removal and installation work.
In case jacking up the machine is required, be sure to
observe the following points.
• Select dry, solid and flat ground for a work site.
• Work in a group of more than two personnel. One person
shall mainly engage in practicing the work and others
shall work as assistants and/or ensure safety.
• Do not use the bucket to raise the front wheels.
• Do not raise the machine off the ground more than neces-
sary.
• When the front (rear) wheels are raised off the ground,
wedge wheel stoppers under the rear (front) wheels.
• After the machine is raised off ground, be sure to block
the machine using rigid supports. Never leave the ma-
chine to be supported only by jacks.
• The rear wheels oscillate. Insert wooden blocks between
the axle and the frame to stop oscillation.
• When removing the wheel bolts, lift the wheel with a
crane so that the wheel bolt remaining at the top position
is finally removed.
• Wheel bolt tightening torque: 890 N•m (90.8 kgf•m)
Tire wheel:
When a tire wheel must be removed, ask a professional
person to do so. Allow only an authorized person to inflate
a tire after the tire was installed onto the wheel. Sufficiently
remove rust from the wheel. Severe rust may cause the
wheel to crack, possibly causing the machine and/or per-
sonal accidents.
MAINTENANCE
7-89
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