COATS 7xxx Series Tire Changer - Manual (Page 21)

Important: Always read and follow operating instructions. • 17
Aluminum and Custom Wheels
Follow instructions provided for standard steel wheels,
except:
AC. After loosening and lubricating both beads,
rotate the table top until the clamps are in the 12,
3, 6, and 9 o’clock positions (figure 32).
CAUTION
Clamp control pedal must be in the full up
or full down position (detent position) to
maintain clamping force on wheel.
AD. Clamp wheel from the outside. Position rim
edge into clamp at 12 o’clock position. Lower the
wheel and depress the clamp control pedal. Slowly
move the clamps inward until they securely contact
the outside edge of the rim. Engage the detent
position (pedal in full down position) to maintain
clamped pedal position.
TIP: This is usually accomplished by crouching
down in front of the tire changer, holding the wheel
with the right hand, and operating the clamp control
pedal with the left hand. This allows the operator to
watch the clamps as they move to ensure proper,
damage-free clamping.
4. Clamp wheel to the table top as described in item
AD. Always clamp custom wheels from the outside.
Figure 32 - Rotate Table Top to 12 o’clock
5. Depress the tire sidewall downward with the aid
of the Robo Foot providing clearance for the duckhead®
mount/demount tool to be positioned (figure 33). Move
swing arm into place. Increase the horizontal distance
between the demount tool and the wheel an additional
1/16 to 1/8 inch with the adjustment knob.
Figure 33 - Helper Foot Depressing Sidewall of Tire
6. Lubricate upper bead liberally. Use the bead roller
tool to help push the tire bead down so bead area is
easier to reach for lubrication (figure 34).
Figure 34 - Lubricate Upper Bead
7. Locate the valve stem just before the demount tool
before proceeding (figure 35).
Figure 35 - Position Valve Stem Under Demount Tool
8. Insert the bead lifting tool between knob on
demount tool and tire bead (figure 36); use the helper
foot for extra clearance.
Valve Stem
Demount Head
Lube Mop