The first statistics screen, shown above, represents spin counts for first harmonic
results. Columns 3 and 4 show the larger runout amount of the two measured rim lips
for each spin (the smaller values for each spin are not stored). Column 5 shows the
radial average of the two rim lips. The rim average is used for Forcematching®,
therefore use this column as an indicator of how much matchable rim runout was
measured by the GSP9720JLR compared to how much tire (and assembly) road
force was measured (columns 1 and 2).
The “Show More Statistics” key can be selected to show second harmonic, third
harmonic, and T.I.R. results for all spins. Column 5, rim average data, will not be
shown in these cases.
If the GSP9720JLR is equipped with StraightTrak
®
LFM, there will be a page of
lateral force statistics following the T.I.R. results.
“Clear Data” can also be selected (key is only available in Service Mode) to erase the
tabulated statistics data.
If statistics are displayed in metric units, then the displayed ranges will be converted
from inches to millimeters and from pounds to kilograms.
GSP9720JLR Wheel Balancer Operation Instructions Road Force® Measurement Procedures
109
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