Balancer Operation
Overview
This machine is a two-plane, microprocessor-based computer
balancer. Any imbalance in a wheel, either static or dynamic, is
resolved into two correction planes (usually the inner and outer
flanges of the wheel) where corrective weights can be applied.
Pressing MODE and selecting the DYNAMIC, ALLOY, STATIC,
or RV mode can change the location of these planes.
Determining the Planes
When the 1000D distance gauge is pulled out and held against
the wheel flange, the computer automatically registers the dis-
tance (referred to in these instructions as the A Offset meas-
urement). The computer will "beep" to indicate it has stored the
measured distance. This distance measurement (the Offset)
tells the computer the location of the inner plane of the wheel
for Dynamic balancing.
While the 1000D distance gauge is held in contact with the
wheel flange, the computer also calculates the wheel diameter
(D measurement). The diameter measurement is automatically
entered (along with the offset measurement) when the com-
puter BEEPS. The diameter measurement tells the computer
how far from the center of the hub the weights will be applied.
The offset and diameter measurement principles are the same
for the 1000, however the operator must enter the measure-
ments, instructions on page 8.
When the wheel width is entered into the computer, it is auto-
matically added to the offset measurement to determine the
outer plane of the wheel. The wheel width is entered manually
by the operator as the W measurement.
Balancing a Wheel
When a wheel is spun, the balancer detects any imbalance
present. The computer calculates the weight needed to correct
the imbalance and the location for weight application. The
weight required to correct the imbalance is displayed on the
control panel, and the weight positioning lights assist the oper-
ator in positioning the weight application location at top-dead-
center. Weight displays and positioning lights are provided for
both inner and outer planes of the wheel.
The stop-on-top feature of the 1000D is designed to stop the
spinning wheel with the outer weight application location near
top-dead-center, if no imbalance is detected.
Direct Drive
6 • COATS 1000/1000D Wheel Balancer
