7. Rotate the tire by pushing the tire rotating
toggle to the right. Position the front bead-breaking disc
against the outside bead of the wheel flange. You
should adjust the position of the hydraulic pump
assembly by loosening the position lockpin and sliding
the pump to the proper position. After turning the pump
release valve clockwise as far as it will go, apply
hydraulic pressure against the bead by pumping the
handle, as shown in figure 7-19. Use the guide handle to
properly position the disc. Push the bead back far
enough to allow the removal of the lockring or loose
flange.
8. Remove the lockring and loose flange. You
should use the bead shoes to hold the bead back while
you are removing the lockring. See figure 7-20. Release
and retract the front bead-breaking disc by turning the
release valve counterclockwise.
9. Repeat the bead-breaking operation against the
rear surface of the tire with the rear bead-breaking
assembly.
Figure 7-20.--Shaft arranged to hold tire bead while
removing lockring.
10. After the beads are broken on divided (split)
wheels, remove the nuts and bolts while the wheel
assembly is mounted on the machine.
according to the bead-breaking procedure. If the tire
DISMOUNTING DIVIDED (SPLIT)
has a tube, remove the hex nut and push the valve away
WHEELS.--The tire bead should be broken away
from the seated position. This will prevent damage to
from the wheel and the nuts and bolts removed
the inner tube valve attachment when you break the tire
bead loose. Then, remove the wheel assembly from the
tire. If the tire is tubeless, remove the wheel seal
carefully from the wheel half and place it on a clean
surface. Wheel seals in good condition may be reused if
replacement seals are not available. If the tire has a
tube, remove it. Inner tubes can be reused if they are in
good condition and less than 5 years old.
DISMOUNTING DEMOUNTABLE FLANGE
WHEELS.--The tire bead should be broken away
from the wheel according to the bead-breaking
procedure. If the tire has a tube, you should remove the
hex nut and push the valve away from the seated
position. This will prevent damage to the inner tube
valve attachment when you break the bead.
If you have trouble removing the flange while the
wheel is mounted on the bead-breaking machine,
remove the tire from the machine. Lay the tire and
wheel assembly flat with the demountable flange side
up. Drive the demountable flange down by tapping it
with a rubber, plastic, or rawhide-faced mallet. This
should enable you to remove the locking ring.
Figure 7-19.--Using bead-breaking pump.
7-16
