COATS 50xx Series Tire Changer - Manual (Page 11)

Figure 18 - Location of Manual Release Valve
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:
AA. 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 19 - Rotate Table Top to 12 O'clock
AB. (5060, 5065) The normal position for all clamps
is position 1 (or the most inward position). This
provides outside clamping of wheels 10 to 17.5
inches in diameter, and inside clamping of
wheels from 12 to 20 inches in diameter.
Use position 2 only on large diameter wheels.
This provides outside clamping of wheels 14 to
21 inches, and inside clamping of wheels from
16 to 24 inches in diameter.
Figure 20 - (5060, 5065) Adjustable Clamp Positions
AC. 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 valve core and completely deflate 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). Reposition the bead
loosener positioning pin for wheels over 10
inches wide. Always loosen the bead on the
narrow/mounting side of the wheel first (Figures
4 and 21).
Figure 21 - Position Tire for Bead Loosening and Place
Positioning Pin in Proper Location for Wide Wheels
COATS 50xx Series Rim Clamp Tire Changers • 9
CAUTION
Position 1
Position 2
Position Pin
Valve Stem
Manual Release Valve