COATS 7xxx Series Tire Changer - Manual (Page 23)

Important: Always read and follow operating instructions. • 19
Performance Tires and Wheels • Mounting
1. Lubricate both tire beads liberally. Performance
tires will require more lubrication than standard pas-
senger car tires.
2. Mount the lower bead. In most cases, the lower
bead will mount easily.
AE. Mounting the top bead can be very difficult
when mounting new tires on performance and
custom wheels. Proceed slowly and cautiously.
3. For top bead installation, rotate table top until the
valve stem on wheel is 180 degrees ahead of the Duck-
head mount/demount tool (9 o’clock position). Pull ring
on locking pin and attach Duckhead roller to the mount/
demount tool; using Robo Arm to assist (figure 41).
Figure 41 - Position Valve Stem 180º Ahead of Mount/Demount
Tool
3a. Release locking pin making sure the duckhead
roller mount is fully engaged on the arm bracket; with
no gap (figure 41a).
Figure 41a - Duckhead Roller Properly Mounted On Bracket
4. Use Robo Arm™ to push down on tire 90 degrees
clockwise from mount/demount tool to allow bead to
utilize drop center area of rim. Apply extra lubricant to
mount upper bead.
Fig 42 - Use Robo Arm To Hold Tire In Rim Drop Center
5. Depress table top pedal and slowly rotate tire until
bead is mounted. Be careful to ensure bead stays in the
rim drop center in the area ahead of mount/demount
tool.
Figure 42a - Mounting Top Bead
180º
Valve Stem