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Wheel & Rim Safety Manual
Preliminaries
Demounting
CAUTION:
Always completely deflate tire by removing valve core before removing the tire from vehicle or
before attempting any other demounting operation. Check the valve stem by carefully running a piece of
wire through the stem to make sure it is not plugged.
See Safety Procedures & Standards for Servicing
Off-Highway Rim Wheels.
C
AA
1
1. Remove wiper arm extensions from center
post bracket.
D
D
2
2. Lower tire and rim assembly onto centering
blocks. Expand blocks to secure rim.
D AC
3
3. Position push-block on bottom shoulder.
Work the push-block upward to break the
bottom bead away from rim. Position push-
block on top shoulder. Work the push-block
downward to break the top bead away from
rim and into drop center (rim well).
4. Extend demount cylinder until top bead
appears above rim flange.
CAUTION:
Partially
extend demount cylinder to insure edge of
plate clears rim flange. Retract push-block to
home position. Continue to extend demount
cylinder until bottom bead is pushed off and
tire rests on machine frame.
