Forcematching; Road Force And Runout Limits Enabled Diagnosis Mode - Hunter GSP9720JLR Operation Instructions Manual

4.3 Forcematching®

Road Force and Runout Limits Enabled Diagnosis Mode

GSP9720JLR Wheel Balancer Operation Instructions
For safety, spinning is prevented for any of the following conditions: When the
Inflation Station screen is showing, the hose is not at the storage position, or the
hose is pressurized (not disconnected from the valve stem).
Forcematching® is a method of aligning the stiffest spot of the radial tire road force
first harmonic (once-per-revolution component) with the average low point of the
radial rim runout first harmonic to decrease vibration in the wheel assembly. Refer to
"Theory of Operation," page 133. This type of match mounting has been done with
expensive equipment by the tire/wheel manufacturers and OEMs for years to provide
the smooth ride associated with a new vehicle. This is the first time equipment is
available to provide "Forcematching®" at a service level. When the
performs a spin with the load roller enabled, it measures the road force of the wheel
assembly. Refer to "Road Force® Measurement," page 135.
NOTE: It is important that the air pressure of the tire is set to
specifications prior to the Road Force® Measurement.
Incorrect tire pressure will affect the results.
If the
feature, the tire can be easily set to the specified air
pressure before and after ForceMatching. Refer to "Inflation
Station," page 106.
After measuring the assembly, if it detects a Road Force® Measurement beyond
user specified limits, it prompts the operator to measure rim runout. Refer to "Rim
Runout Measurements," page 63.
After measuring rim runout, the results will be shown on the "Current Runout & Road
Force" popup screen.
NOTE: Forcematching® results and benefits are not computed until
rim runout is measured.
If limits are enabled in the setup mode then the "Current Runout & Road Force"
screen "Diagnosis" box will display a message informing you whether Forcematching
will be beneficial. The diagnosis and basis for calculating conclusions is always
based on the limits chosen by the operator from the Balance Screen and Setup
Mode.
GSP9720JLR is equipped with the Inflation Station
GSP9720JLR
Road Force® Measurement Procedures x 83