COATS 5035 A/E Tire Changer - Manual (Page 11)

Stand Back During Bead Seat and Inflation
PERFORMANCE, CUSTOM, AND
ALUMINUM WHEELS
Only tire technicians
with experience and
training on custom
wheels should attempt to service expensive
custom alloy or aluminum wheels and high-
performance low-profile tires.
Pre-Operation Notes:
•
Ensure all weights have been removed.
• Assistance will be required on wide wheels.
• Clamp wheel from the outside.
• Use ample lubricant for mount and demounting
• Always review wheel nicks and/or scratches
with the owner before servicing.
Aluminum and Custom Wheels
Follow instructions provided for standard steel
wheels, except:
A. 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 17 - Rotate Table Top to 12 O'clock
B. 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.
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.
Performance Tires and Wheels • Demounting
Follow these instructions for performance type tires
and wheels, including run-flat tires and their
associated wheels, and asymmetrical hump wheels.
1. Remove the valve core and completely deflate
the tire.
2. Pull the bead loosener shoe away from the
machine and roll the tire into position against the
bumper pads. Position the tire with the valve
stem in the 3 o'clock position (in direct line with
the bead loosener shoe). Always loosen the
bead on the narrow/mounting side of the wheel
first (Figures 4 and 18).
Figure 18 - Position Tire for Bead Loosening
NOTE: Wheels with an asymmetrical hump
have a larger "ledge" type hump around the
wheel except at the valve hole making them
more difficult to mount and demount (Figure 19).
Figure 19 - Asymmetrical Hump Wheel
5035 A/E Rim Clamp Tire Changer • 9
Manual
Release
Valve
CAUTION
!
Smooth
Hump At
Valve
Hole
Ledge
Hump -
Rest of
Wheel