Page i
Effective
09/2005
INTRODUCTION
GENERAL
The EEWB525A and EEWB721A wheel balancer is designed to compute static and dynamic imbalance of
car, light truck, motorcycle and truck wheels. For a more detailed description of each application see the
Operators Manual
FUNCTIONAL DESCRIPTION
BASIC BALANCER OPERATION
Once the balancer reaches balancing speed (120 RPM) a tone will sound, this alerts the operator to release
the handle. The balacers display will show
“Spn”
, calculation is done at this time. Once the weight imbal-
ance and location is known the balancer will send 12VDC to a brake solenoid braking the the shaft and
bringing the shaft to a stop. Imbalance amounts and corrective weight locations will be shown on the
display.
WEIGHT APPLICATION
Rotate the wheel until the center green LED in the right hand row of LEDs illuminates. Apply the corrective
weight at top dead center (12 o'clock position) on the right side of the wheel. Repeat this process for the left
side of the wheel referring to the left LED’s.
ALLOY MODES
In addition to the standard Dynamic and Static modes there are 5 Alloy modes, each of which are illustrated
by LEDs on the balancer touch panel when activated. These modes are used for vehicle tire and wheels.
Alloy modes 1 through 5 are accessed by first toggling the MODE key until the balancing mode desired is
displayed. See the Operator's Manual for an explanation of Alloy Mode balancing. The last used mode will
again be used even when power is cycled.
ALU-S MODE
ALU-S mode balancing allows the operator to balance custom wheels in a true dynamic mode using con-
cealed weights while maintaining specified weight separation. See the Operator's Manual for an explanation
of ALU-S mode balancing.
DISPLAY / CONTROL PANEL
The display of the hand spin balancer shows weight amount and position for counterbalancing, plus acts as
a message center for the operator of the machine or for the technician who is repairing the machine.
The balancer may be controlled either manually or automatically. SAPE inputs for wheel distance is nor-
mally automatic and is entered when the SAPE is drawn out and the gauge finger touched to the wheel and
returned to the nested position. If the automatic features of the SAPE are nonfunctional, parameter informa-
tion may be entered manually.
