Hunter GSP9720JLR - Page 8

Prompt for Wheel Assembly ID.......................................................................... 117
Spindle Type ...................................................................................................... 118
Load Roller Type................................................................................................ 118
HammerHead™ ................................................................................................. 118
Road Force Audit Mode ..................................................................................... 118
6. CALIBRATION AND MAINTENANCE ....................................................... 119
6.1 Calibration Procedures....................................................................................... 119
Quick Calibration Check Procedure................................................................... 119
Calibration Menu................................................................................................ 120
Calibration Menu (Service Mode Enabled) ........................................................ 127
6.2 Diagnostic Procedures ....................................................................................... 129
Force Sensors.................................................................................................... 129
Spindle Encoder................................................................................................. 130
Keys and Switches............................................................................................. 130
Data Acquisition Circuits .................................................................................... 130
Dataset Arm Sensors......................................................................................... 130
Loaded Runout Sensor ...................................................................................... 130
Lateral Force Sensor ......................................................................................... 130
6.3 Diagnostic Procedures (Service Mode Enabled) ............................................... 130
Loaded Runout Air Components (Service Mode Only) ..................................... 130
Motor Drive (Service Mode Only)....................................................................... 130
6.4 Cleaning the Console ......................................................................................... 130
6.5 Maintenance ....................................................................................................... 131
Spindle Hub Face and Shaft .............................................................................. 131
BDC Laser Adhesive Weight Locator Maintenance or Service ......................... 131
Optional HammerHead™ TDC Laser Clip-On Weight Locator Maintenance or
Service ............................................................................................................... 131
6.6 Mounting Cone Maintenance ............................................................................. 132
7. THEORY OF OPERATION......................................................................... 133
7.1 Harmonic Vibrations ........................................................................................... 133
7.2 Road Force® and Runout Measurement ........................................................... 135
Force Variation................................................................................................... 135
7.3 Radial Force Variation (RFV) ............................................................................. 136
What is Road Force Measurement™? .............................................................. 137
7.4 Radial Force Variation vs. Unloaded Run Out ................................................... 139
7.5 Road Force® Vibration Placed into Perspective ................................................ 139
7.6 StraightTrak® Lateral Force Measurement System........................................... 140
StraightTrak® Lateral Force Measurement ....................................................... 140
Theory ................................................................................................................ 141
8. GLOSSARY ................................................................................................ 145
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CONTENTS GSP9720JLR Wheel Balancer Operation Instructions