Hofmann Pro42, Operator'S Manual

Page: 30 / 66

Page 3-30
Chapter III Operation
NOTE:
Basic Portable Aligners do not automatically
go to “Steering Angle Measurement” but will require
the user to select from the Measure Menu located on
each of the Readings Screens.
Perform Steering Angle Measurement
If Advanced features are installed on the aligner, Steer-
ing Angle Measurements will begin immediately after
compensation. If using Basic aligner software, these
angles must be selected from any of the readings
screens at the Measure Menu drop-down. It is also
possible to begin steering measurements from any of
the readings screens by simply rotating the steering
wheel in either direction, assuming this has been set
up from Features on the Preferences carousel bar.
First you will be prompted to Lock the brakes and remove
the turntable pins and loosen the rear slipplates.
As you rotate the steering wheel, the aligner tracks the
wheel targets. When the steering wheel is rotated,
the
Steering Measurement
screen is automatically
displayed. Caster, SAI and Toe-out-on Turns (TOOT)
can be measured with the Steering Measurement
process.
As you rotate the steering wheel toward each measure-
ment position, a “Green indicator” at the top of the meter
tracks the wheel movement. The left and right Caster/
SAI measurement positions are at approxi10
and -10 degrees, while the TOOT positions are at ap-
proxi20 and -20 degrees.
An Arrow adjacent to the steering wheel displayed in
the lower portion of the screen prompt the correct direc-
tion to rotate the steering wheel. A numerical readout
below the steering wheel indicates the steering angle
in degrees.
When the wheels reach the correct position, pause for
moment, the aligner responds with a “Ding Ding” sound
when the measurement at that position is complete.
A green stripe appears at the next position to turn to.
When the reading for that angle is complete the angle
indicator at the top of the screen is checked.