COATS 4050A Tire Changer - Manual (Page 10)

Performance Tires/Custom Wheels
Before You Begin - Pre-Operation Notes
Only tire technicians with training on custom
wheels should attempt to service expensive
custom alloy or aluminum wheels and high
performance low-profile tires.
• Ensure all weights have been removed from
the wheel before servicing.
• Assistance will be required on wide wheels.
• Use ample lubricant during mounting and
demounting operations.
• Always review wheel nicks and/or scratches
with the owner before servicing.
1. Check the clearance on the lower bead
loosener shoe. If it does not clear the rim lip,
install the 1/4” shim (figure 17).
To Install the Shim: Remove the tire/wheel
assembly from the tabletop and depress the
foot pedal. The loosener shoe will extend to
the top of it’s stroke. Do not release the pedal.
Tilt the bead loosener shoe away from the
center post and slip the red 1/4” thick shim
over the end of the bolt between the shoe
adjusting bar and the lower shoe.
Figure 17- Installing 1/4” Shim
2. To service wheels over 11” wide, extend the
upper bead loosener post. Remove the clevis
pin, raise the post to the appropriate height,
and reinsert the pin (figure 18).
Figure 18- Extending Upper Bead Loosener Post
3. For mounting and demounting tires on wheels
from 10” to 14” wide, use the optional short
center post extension (part #8108311). Slip the
extension over the center post key (figure 19).
Figure 19- Optional Short Center Post Extension
4. For mounting and demounting tires on wheels
wider than 14”, use the optional center post
extension (part #8108313). Slip the extension
over the center post key (figure 20).
Figure 20 - Optional Long Center Post Extension
5. On wheels with thin or delicate center holes
that may be damaged by the centering cone,
use the optional Speed Mag or Custom
Wheeler Adapter (figure 21).
Figure 21 - Optional Speed Mag Adapter
6. Use the platic combination tool boots supplied
with the optional Speed Mag adapter to
prevent scratching of custom wheels (figure
22). Boots may be ordered separately (part
#8106568, 10 pairs).
Figure 22 - Combination Tool Boots
8 • COATS 4050A Tire Changer