COATS 7665 AX/EX Tire Changer - Manual (Page 6)

5. Determine the mounting side of the wheel. The
mounting side is the narrow side of the drop
center. (Tire removed in Figure 4 for clarity.)
Figure 4 – Determining Mounting Side of Wheel
6. Place tire/wheel assembly on table top with
mounting side up (Figure 5). Use the clamp con-
trol pedal to move the clamps inward (push
pedal down) or outward (toggle pedal up).
Clamp steel wheels from the inside (clamps
push outward against wheel). Clamp mag and
custom wheels from the outside (clamps push
inward against the outside rim edge). Refer to
the Performance Tires and Wheels section.
Figure 5 – Place Tire/Wheel Assembly on Table Top
7. Move the swing arm into position. Pull the lock-
ing handle forward to release the slide. Push
down on the top of the vertical slide to move
the demount head into contact with the rim
edge. Push locking handle back to lock slide
into place. As the slide is locked, the mount/de-
mount head will move upward approximately
1/8 inch from rim edge (Figure 6).
Figure 6 - Position
Mount/Demount Tool
8. The mount /
demount head roller
should be in contact
with the rim edge.
Turn the swing arm
adjusting knob to
move the roller away
from the rim 1/8 to 1/4
inch (Figure 7).
Figure 7 - Adjust Swing Arm to Position Head Roller
9. Check metal head positioning. Mount/demount
metal head should be positioned with 1/8 to 3/16
inch clearance between the top of the rim edge
and the bottom of the head, and 1/8 to 1/4 inch
clearance between the rim edge and the head
roller. This clearance will be maintained as long
as the locking handle and adjustment knob are
not changed. The operator may swing the arm
out of the way and back into place again without
needing to reposition the head (when changing
a like set of wheels) (Figure 8).
Figure 8 - Proper (Metal) Mount/Demount Head Position
10. Check plastic head positioning. Mount/demount
plastic head should be positioned with 1/16 to
1/8 inch clearance between the top of the rim
edge and the bottom of the head, and 1/16 to
1/8 inch clearance between the rim edge and
the inside surface of the head. This clearance
will be maintained as long as the locking handle
and adjustment knob are not changed. The
operator may swing the arm out of the way and
back into place again
without needing to
reposition the head
when changing a like
set of wheels (Figure
9).
Figure 9 - Proper (Plastic)
Mount/Demount Head
Position
Narrow Side
Long Side
Drop Center
1/8" to 1/4"
3/16" to 1/8"
1/16" to 1/8"
1/16" to 1/8"
4 • 7050/7055/7060/7065 AX/EX Rim Clamp Tire Changer