Hunter GSP9712 User manual

Copyright 1997-2005 Hunter Engineering Company
OPERATION INSTRUCTIONS Form 4202T, 11-05
Supersedes Form 4202T, 07-05
GSP9700 Series
Road Force Measurement
System
With SmartWeight™ Balancing Technology
Software Version 5.0

OWNER INFORMATION
Model Number ____________________________________________________________________
Software Version Number ___________________________________________________________
Serial Number ____________________________________________________________________
Date Installed_____________________________________________________________________
Service and Parts Representative _____________________________________________________
Phone Number____________________________________________________________________
Sales Representative_______________________________________________________________
Phone Number____________________________________________________________________
Concept and Procedure Training Checklist
Trained Declined
Safety Precautions 
Quick-Thread
Autostart
Servo-Stop
Maintenance & Calibration 
Cleaning, Lubrication, and Maintenance of Adaptors, Hub, and Shaft
Calibrating the Balancer
Calibrating the Load Roller and Dataset Arms
Calibrating the Inflation Station
Mounting the Wheel/Tire Assembly 
Verifying Mounting Repeatability with Centering Check® Feature
Cone Mounting
Pressure Ring and Spacers
Flange Plate and Cone Mounting
Wheel Balancing 
SmartWeight™
Standard
Mixed Weights
Adhesive Weights with Auto Dataset Arms
Split-Spoke
Patch Balancing with Auto Dataset Arms (optional)
Do’s and Don’ts of Wheel Balancing 
Road ForceMeasurement and ForceMatching™ 
Adjusting P/SUV/LT Limits 
Assembly Measurements
Applying Previous Wheel Measurements
Applying Previous Tire Measurements
Wheel Measurement with Dataset Arms
Tire Installed
Bare Rim
Road ForceMeasurement First Harmonic Diagnosis Screen 
“Current Runout and Force Variation”
“Diagnosis Explanation” and “Details” Screens 
Match Codes
MatchMaker Procedure Explained
Do’s and Don’ts of Road ForceMeasurement 

Individuals and Date Trained
__________________________________ __________________________________
__________________________________ __________________________________
__________________________________ __________________________________
__________________________________ __________________________________
__________________________________ __________________________________
__________________________________ __________________________________

GSP9700 Series Road Force Measurement System Operation Contents i
CONTENTS
1. GETTING STARTED........................................................................................1
1.1 Introduction.................................................................................................................1
1.2 For Your Safety ........................................................................................................... 1
Hazard Definitions..................................................................................................1
IMPORTANT SAFETY INSTRUCTIONS ........................2
Electrical.................................................................................................................3
Decal Information and Placement..........................................................................4
Right Side View...............................................................................................4
Left Side View..................................................................................................5
Back View........................................................................................................6
Specific Precautions/Power Source.......................................................................7
Turning Power ON/OFF.........................................................................................7
Equipment Installation and Service .......................................................................8
Equipment Specifications.......................................................................................8
Electrical..........................................................................................................8
Air ....................................................................................................................8
Atmospherics...................................................................................................8
Sound Pressure Level.....................................................................................8
Safety Summary ....................................................................................................8
Explanation of Symbols...................................................................................8
1.3 Equipment Components ............................................................................................9
Standard Balancer Accessories...........................................................................10
1.4 Operating the Console .............................................................................................11
Using Softkeys.....................................................................................................11
Primary Balancing Display...................................................................................12
Using the Control Knob (GSP9712).....................................................................12
Using Control Knobs (GSP9702).........................................................................13
Resetting the Program.........................................................................................13
Using the Screen Saver/Merchandising Display..................................................13
2. BALANCING OVERVIEW..............................................................................15
2.1 Balancing Modes ......................................................................................................15
SmartWeight™ Balancing Technology................................................................15
Balancing Theory.................................................................................................15
Static Imbalance............................................................................................15
Couple Imbalance..........................................................................................16
Static and Dynamic Imbalance Sensitivity...........................................................17
2.2 Identifying the Static Balance Weight Plane..........................................................18
2.3 Identifying the Dynamic Balance Weight Planes...................................................19
2.4 SmartWeight™ Dynamic Weight Planes ................................................................20
3. MOUNTING WHEELS ON THE BALANCER ................................................21
3.1 Mounting the Wheel Using Wheel Lift (Optional) ..................................................21
Raising the Tire/Wheel Assembly........................................................................21
Lowering the Tire/Wheel Assembly.....................................................................23
3.2 Mounting the Wheel (Without Wheel Lift)...............................................................23
Mounting Error Detection Features......................................................................24
Front/Back Cone Mounting..................................................................................24
Using Plastic Wheel Mounting Washer................................................................26
Cone/Flange Plate Mounting ...............................................................................27
Expandable Collet Mounting................................................................................28
Using the Pressure Ring and Spacers.................................................................28
Pressure Ring................................................................................................28
Spacers .........................................................................................................29
CenteringCheck
®
..................................................................................................30
3.3 On-Vehicle Wheel Mounting Methods ....................................................................33
Hub Centric..........................................................................................................33
Lug Centric...........................................................................................................33

ii Contents GSP9700 Series Road Force Measurement System Operation
4. BALANCING A WHEEL................................................................................. 35
4.1 Balancing Procedures..............................................................................................35
SmartWeight™ Balancing Technology................................................................35
Using SmartWeight™....................................................................................35
Switching from SmartWeight™ to Traditional Dynamic Balancing Modes....37
Dynamic Balancing Selection ..............................................................................37
Static Balancing Selection ...................................................................................37
Static Balance Mode Reminder for “Dynamic Balance Importance” (Except
Patch Balance)..............................................................................................38
Selecting Weight Types and Placement Modes..................................................39
STANDARD Balancing Procedure (Using Clip-On Weights)........................39
MIXED WEIGHTS Balancing Procedure (Combination of Clip-On &
Adhesive Weights).........................................................................................41
ADHESIVE WEIGHTS Balancing Procedure (Adhesive Weights Only).......43
PATCH BALANCE
®
Procedure.....................................................................45
4.2 Using the Auto Dataset
®
Arms ................................................................................48
Automatic Weight Position Measurement............................................................48
Manual Weight Position Measurement................................................................48
Measuring Dimensions for Standard Clip-on Weight Balancing..........................49
Measuring Dimensions for Mixed Weights (Clip-on/Tape-on) Balance...............49
Measuring Dimensions for Adhesive Weights Balancing (Tape-on/Tape-on)....50
Measuring 20 Inch or Larger Rims.......................................................................51
Adjustable Length Inner DatasetArm ........................................................51
Servo-Aided Adhesive Weight Placement.....................................................51
Manual Adhesive Weight Placement.............................................................53
Rim Runout Measurements.................................................................................54
Single Arm Rim Runout External Measurement (Tire and Wheel Assembly)54
Dual Arm Rim Runout External Measurement (Tire and Wheel Assembly) .54
Rim Runout Measurement (Bare Rim)..........................................................56
4.3 Primary and Popup Screens....................................................................................57
Primary Screen Selection ....................................................................................57
Balance Primary Screen......................................................................................58
4.4 Load Roller ................................................................................................................60
Load Roller Operation..........................................................................................60
4.5 ForceMatching™.......................................................................................................61
ForceMatching™ Procedures..............................................................................62
ForceMatching™ Using Previous Bare Rim Measurement.................................63
ForceMatching™ Using Previous Road Force™ Measurement..........................63
Using ForceMatch Codes Feature.......................................................................64
Dial Indicator Gauges Feature.............................................................................64
Lateral/Radial Rim High Spot Indicators Feature ................................................65
Details/Diagnosis Explanation Key......................................................................65
Encountering ForceMatching™ Prediction Errors ...............................................65
Do’s and Don’ts of Road ForceMeasurement..................................................66
4.6 QuickMatch™ Tire and Wheel Mounting................................................................66
QuickMatch™ Procedures...................................................................................67
QuickMatch™ Using Previous Bare Rim Measurement......................................68
QuickMatch™ Using Previous Loaded Runout Measurement............................68
Dial Indicator Gauges Feature.............................................................................68
Lateral/Radial Rim High Spot Indicators Feature ................................................69
Encountering ForceMatching™ or QuickMatching™ Prediction Errors...............69
Do’s and Don’ts of Loaded Runout Measurement...............................................70
4.7 StraightTrak
®
LFM (Lateral Force Measurement) ..................................................70
Disabling StraightTrak
®
........................................................................................73
Vehicle Plan View ................................................................................................74
Net Tire Pull Arrow...............................................................................................74
Road ForceArrows...........................................................................................74
Changing Tag Numbers.......................................................................................75
Show Least Pull ...................................................................................................76
Show Least Vibration...........................................................................................76
Show Alternate Placements.................................................................................76

GSP9700 Series Road Force Measurement System Operation Contents iii
Show Details........................................................................................................77
Determining Tire Conicity Outliers.................................................................77
Printout.................................................................................................................77
Inflation Pressure.................................................................................................78
4.8 Quick-Thread™ Feature........................................................................................... 78
4.9 Motor Drive/Servo-Stop............................................................................................ 79
4.10 Spindle-Lok
®
Feature..............................................................................................79
4.11 Hood Autostart Feature..........................................................................................79
4.12 Loose Hub Detect Feature .....................................................................................79
4.13 Blinding and Rounding ..........................................................................................80
4.14 Inflation Station.......................................................................................................81
5. BALANCING FEATURES AND OPTIONS ....................................................83
5.1 SmartWeight™ Balancing Technology...................................................................83
5.2 WeightSaver™ Wheel Balancing Feature...............................................................84
5.3 Quick-Thread™ Feature........................................................................................... 84
5.4 Motor Drive/Servo-Stop............................................................................................ 85
5.5 Spindle-Lok
®
Feature................................................................................................ 85
5.6 Hood Autostart Feature............................................................................................86
5.7 Loose Hub Detect Feature .......................................................................................86
5.8 Inflation Station......................................................................................................... 86
5.9 Split Weight
®
Feature ...............................................................................................87
Split Weight
®
Operation .......................................................................................87
Correcting Large Imbalances...............................................................................88
5.10 Split Spoke
®
Feature...............................................................................................88
Hiding Adhesive Weight behind Spoke................................................................88
Re-entering Similar Wheel after Split Spoke
®
is Enabled....................................90
Placing Hidden Weight Inside of Hollow Spokes.................................................91
5.11 MatchMaker™ Tire and Wheel Mounting Procedure...........................................93
Tires Mounted on Rims........................................................................................93
Tires Not Mounted to Rims..................................................................................94
5.12 Diagnosis Explanation Screen (Limits Disabled)................................................ 95
5.13 Diagnosis Explanation Screen (Limits Enabled).................................................95
5.14 Details Screen.........................................................................................................96
5.15 Print Summary ........................................................................................................97
5.16 Harmonics & T.I.R. Data/Plots ............................................................................... 98
Assembly Data Plots Screen ...............................................................................98
Tire Data Plots Screen.........................................................................................99
5.17 Statistics................................................................................................................100
Show Statistics...................................................................................................100
Weight Savings..................................................................................................101
Rim Data Plots Screen.......................................................................................102
6. EQUIPMENT INFORMATION ......................................................................103
6.1 Software Identification ...........................................................................................103
6.2 Program Cartridge Removal and Installation.......................................................103
6.3 Balancer Set Up ......................................................................................................104
Setting Up the Display Language......................................................................105
Setting Up the Printout Language......................................................................105
Setting Up the QuickMatch
®
Feature.................................................................105
Setting Up the Use Limits Feature.....................................................................106
Setting Up the Screen Saver Time-out..............................................................106
Setting Up the Hood Autostart Feature..............................................................107
Setting Up the Servo-Stop/Servo-Push.............................................................107
Setting Up the Quick-Thread™ Feature............................................................108
Setting Up the Balance Check Spin...................................................................108
Setting Up the Weight Units...............................................................................108
Setting Up the Inflation Station Units.................................................................109
Setting Up the Runout Units ..............................................................................109
Setting Up the Road Force Units.......................................................................109
Setting Up the Prompted Inflation Station..........................................................110
Setting Up the Prompted Centering Checks......................................................110

iv Contents GSP9700 Series Road Force Measurement System Operation
6.4 Service Mode Setup and Features ........................................................................111
Setting Up the Runout & Road ForceLimits...................................................111
Setting the “P” Limits...................................................................................111
Setting the “P/SUV” Limits...........................................................................111
Setting the “LT” Limits .................................................................................112
Setting the Limits to “Factory Default”.........................................................112
Programmed Road ForceLimits...............................................................112
Setting Up the Balance Limits............................................................................113
Main Selections...........................................................................................113
Setting Up the Weight Units ........................................................................113
Setting Up the Ounce Round Amount.........................................................113
Setting Up the Gram Round Amount...........................................................113
Setting the Limits Displayed........................................................................113
Non-SmartWeight Options ..........................................................................113
Setting Up the Ounce Blind Amount............................................................113
Setting Up the Gram Blind Amount.............................................................113
SmartWeight™ Options - Setting Up the Force Limits................................114
WeightSaver™ Residual Goal.....................................................................114
Setting Up the Inner Dataset Arm Type.............................................................114
Setting Up the Console Type.............................................................................115
Setting Up the Load Roller Type........................................................................115
7. CALIBRATION AND MAINTENANCE......................................................... 116
7.1 Calibration Procedures ..........................................................................................116
Balancer (3 Spin Procedure)..............................................................................117
Inner Dataset
®
Arm (Calibration Tool, 221-672-1, Required)............................118
Outer Dataset
®
Arm (Calibration Tool, 221-672-1, Required) ...........................121
Load Roller (Calibration Tool, 221-672-1, Required).........................................123
Servo-Stop.........................................................................................................125
Quick Calibration Check Procedure...................................................................126
7.2 Diagnostic Procedures...........................................................................................126
Force Sensors....................................................................................................127
Rotary Encoders ................................................................................................127
Keys and Switches.............................................................................................127
Data Acquisition Circuits....................................................................................127
Dataset
®
Arm Sensors.......................................................................................127
Loaded Runout Sensor......................................................................................127
7.3 Printing.....................................................................................................................127
Changing Ribbon Cartridge (P/N 162-42-2): .....................................................128
Bottom Feed Paper Loading..............................................................................128
7.4 Cleaning the Console .............................................................................................128
7.5 Spindle Hub Face and Shaft Maintenance ...........................................................129
7.6 Mounting Cone Maintenance.................................................................................129
8. THEORY OF OPERATION .......................................................................... 131
8.1 Harmonic Vibrations...............................................................................................131
8.2 Road Force™ Measurement ..................................................................................133
Force Variation...................................................................................................133
Tire Radial Force Variation (Uniformity)......................................................134
8.3 Radial Force Variation (RFV) .................................................................................134
8.4 Radial Force Variation vs. Unloaded Run Out .....................................................135
8.5 Road ForceVibration Placed into Perspective.................................................135
8.6 StraightTrak
®
Lateral Force Measurement System.............................................136
StraightTrak
®
Lateral Force Measurement ........................................................136
Tire Pull Measurement and Correction........................................................136
Theory................................................................................................................137
Conicity........................................................................................................138
Plysteer........................................................................................................138
Net Tire Pull.................................................................................................138
9. GLOSSARY ................................................................................................. 139
9.1 Balancing Terms.....................................................................................................139

GSP9700 Series Road Force Measurement System Operation 1. Getting Started 1
1. Getting Started
1.1 Introduction
The GSP9700 Series Road Force Measurement System is a wheel balancer with the
added capabilities of measuring tire/wheel Road Force, Lateral Force, Assembly, and
Wheel runout.
The GSP9700 simulates a “road test”, with a unique “load roller” which applies up to
1400 pounds of force against the rotating assembly. The roller measures the loaded
runout of the assembly (deflection while under load) and automatically recommends
corrections when needed. The GSP9700 technology eliminates many of the time
consuming, subjective, and often non-productive manual measurements previously
used to diagnose and repair ride disturbance concerns. The operation of this
diagnostic tool is discussed later in this manual.
This manual provides operation instructions and information required to operate the
GSP9700. Read and become familiar with the contents of this manual prior to
operating the GSP9700.
The owner of the GSP9700 is solely responsible for arranging technical training. The
GSP9700 is to be operated only by a qualified trained technician. Maintaining records
of personnel trained is solely the responsibility of the owner and management.
“References”
This manual assumes that you are already familiar with the basics of tire balancing.
The first section provides the basic information needed to operate the GSP9700. The
following sections contain detailed information about equipment operation and
procedures. “Italics” are used to refer to specific parts of this manual that provide
additional information or explanation. For example, Refer to “Equipment
Components,” page 9. These references should be read for additional information to
the instructions being presented.
1.2 For Your Safety
Hazard Definitions
Watch for these symbols:
CAUTION: Hazards or unsafe practices, which could result in minor
personal injury or product or property damage.
WARNING: Hazards or unsafe practices, which could result in
severe personal injury or death.
DANGER: Immediate hazards, which will result in severe personal
injury or death.
These symbols identify situations that could be detrimental to your safety and/or
cause equipment damage.

2 1. Getting Started GSP9700 Series Road Force Measurement System Operation
IMPORTANT SAFETY INSTRUCTIONS
When using your garage equipment, basic safety precautions should always be
followed, including the following:
Read all instructions before operating the GSP9700.
Read and follow the instructions and warnings provided in the service, operation and
specification documents of the products with which this GSP9700 is used (i.e.,
automobile manufacturers, tire manufacturers etc.).
Do not operate equipment with a damaged cord or equipment that has been dropped
or damaged until a Hunter Service Representative has examined it.
Always unplug equipment from electrical outlet when not in use. Never use the cord
to pull the plug from the outlet. Grasp plug and pull to disconnect.
If an extension cord is necessary, a cord with a current rating equal to or more than
that of the equipment should be used. Cords rated for less current than the
equipment may overheat. Care should be taken to arrange the cord so that it will not
be tripped over or pulled.
Verify that the electrical supply circuit and the receptacle are properly grounded.
To reduce the risk of electrical shock, do not use on wet surfaces or expose to rain.
Verify the appropriate electrical supply circuit is the same voltage and amperage
ratings as marked on the balancer before operating.
WARNING: DO NOT ALTER THE ELECTRICAL PLUG. Plugging the
electrical plug into an unsuitable supply circuit will
damage the equipment and may result in personal
injury.
To reduce the risk of fire, do not operate equipment near open containers of
flammable liquids (gasoline).
Read and follow all caution and warning labels affixed to your equipment and tools.
Misuse of this equipment can cause personal injury and shorten the life of the
balancer.
Keep all instructions permanently with the unit.
Keep all decals, labels, and notices clean and visible.
To prevent accidents and/or damage to the balancer, use only Hunter GSP9700
Series Road Force MeasurementSystem recommended accessories.
Use equipment only as described in this manual.
Never stand on the balancer.
Wear non-slip safety footwear when operating the balancer.
Keep hair, loose clothing, neckties, jewelry, fingers, and all parts of body away from
all moving parts.
Do not place any tools, weights, or other objects on the safety hood while operating
the balancer.