Hunter GSP9720JLR, GSP9700 Operation Instructions Manual

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OPERATION INSTRUCTIONS Form 5827-T, 09-09

Supersedes Form 5827-T, PRELIMINARY, 12-08

GSP9700 Series Wheel Balancer (GSP9720JLR)

Road Force Measurement® System

With SmartWeight® Balancing Technology Software Version 3.0

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

Safety Precautions

Quick-Thread

AutoClamp (optional)

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

Trained

Declined



Flange Plate and Cone Mounting

Wheel Balancing

SmartWeight

Standard

Mixed Weights

Adhesive Weights with Auto Dataset Arms

Split Spoke

RimScan

Patch Balancing with Auto Dataset Arms (optional)

TPMS



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:

___________________________________ ___________________________________

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.......................................................................... 3

Specific Precautions/Power Source....................................................................... 5

Specific Precautions/BDC Laser Indicator............................................................. 5

Specific Precautions/HammerHead™ TDC Laser Indicator (Optional)................. 6

Turning Power ON/OFF ......................................................................................... 6

Equipment Installation and Service ....................................................................... 7

Equipment Specifications....................................................................................... 7

Safety Summary .................................................................................................... 8

1.3 GSP9720JLR Components .................................................................................... 8

Standard Accessories ............................................................................................ 9

JLR Wheel Mounting Kit ........................................................................................ 9

1.4 Operating the Console ......................................................................................... 10

Using Softkeys ..................................................................................................... 10

Using Control Knob.............................................................................................. 11

Primary Balancing Display ................................................................................... 12

Resetting the Program ......................................................................................... 12

2. INTRODUCTION TO BALANCING............................................................... 13

2.1 Balance Forces..................................................................................................... 13

Balancing Theory - Static Imbalance ................................................................... 13

Balancing Theory - Couple Imbalance................................................................. 14

2.2 SmartWeight

Static and Dynamic Imbalance Sensitivity ........................................................... 15

2.3 SmartWeight

2.4 Using SmartWeight

2.5 SmartWeight Forces and Limits Feature.............................................................. 18

2.6 Weightsaver® Wheel Balancing Feature ............................................................. 18

2.7 SmartWeight Odometer........................................................................................ 19

Show Savings Summary...................................................................................... 20

Balancing Technology .................................................................. 15

Balancing Technology Dynamic Weight Planes........................... 16

Balancing Technology ........................................................ 16

3. BALANCING PROCEDURES....................................................................... 23

3.1 Mounting the Wheel Using Wheel Lift (Optional) ................................................. 23

Raising the Wheel Assembly ............................................................................... 23

Lowering the Wheel Assembly............................................................................. 24

3.2 Mounting the Wheel on the Balancer Spindle ...................................................... 25

Installing the Wheel.............................................................................................. 25

Installing the Wheel Using Quick-Thread® Wheel Clamping .............................. 25

3.3 Quick-Thread® Wheel Clamping.......................................................................... 26

3.4 CenteringCheck® Wheel Centering Feature ........................................................ 27

Mounting Error Detection Features...................................................................... 30

Front/Back Cone Mounting .................................................................................. 30

Using Plastic Wheel Mounting Washer................................................................ 31

Cone/Flange Plate Mounting ............................................................................... 33

Expandable Collet Mounting................................................................................ 34

Using the Pressure Ring and Spacers................................................................. 34

GSP9720JLR Wheel Balancer Operation Instructions CONTENTS x i

3.5 Hood Autostart Feature ........................................................................................ 35

3.6 Loose Hub Detect Feature ................................................................................... 35

3.7 The Logo Screen .................................................................................................. 36

3.8 Recall Specifications Screen................................................................................ 36

3.9 TSB Screen .......................................................................................................... 37

3.10 Vehicle Specifications Screen ............................................................................ 38

Updating Specifications ....................................................................................... 38

3.11 Motor Drive/Servo-Stop...................................................................................... 43

3.12 Spindle-Lok® Feature ........................................................................................ 43

3.13 Balance Primary Screen..................................................................................... 43

3.14 Spin Tracker Feature.......................................................................................... 44

Methods of Saving Spin Data .............................................................................. 44

Storing Measurements......................................................................................... 45

Print Summary ..................................................................................................... 46

3.15 Balance Modes................................................................................................... 46

SmartWeight® Balancing Technology ................................................................. 47

Dynamic Balancing – Traditional Balancing Mode ..............................................47

Static Balancing – Traditional Balancing Mode ................................................... 48

3.16 Balancing Procedures for Specific Weight Types and Placement ..................... 49

AUTO MODE Balancing Procedure..................................................................... 50

STANDARD Balancing Procedure Using Clip-On Weights ................................. 50

MIXED WEIGHTS Balancing Procedure Using a Combination of Clip-On &

Adhesive Weights ................................................................................................ 52

ADHESIVE WEIGHTS Balancing Procedure Using Adhesive Weights .............. 55

PATCH BALANCE® Procedure........................................................................... 57

3.17 Automatic Dataset® Arms Operation ................................................................. 59

Automatic Weight Position Measurement............................................................ 59

Manual Weight Position Measurement ................................................................ 59

Measuring Dimensions for Standard Clip-on Weight Balancing.......................... 60

Measuring Dimensions for Mixed Weights (Clip-on/Adhesive) Balance.............. 60

Measuring Dimensions for Adhesive Weights Balancing .................................... 61

Rim Runout Measurements ................................................................................. 63

3.18 Blinding and Rounding .......................................................................................66

3.19 Split Weight® Feature ........................................................................................ 66

Split Weight® Operation ...................................................................................... 66

Correcting Large Imbalances............................................................................... 67

3.20 Split Spoke® Feature ......................................................................................... 67

Hiding Adhesive Weight Behind Spoke ............................................................... 68

Re-entering Similar Wheel after Split Spoke® is Enabled................................... 69

Placing Hidden Weight Inside of Hollow Spokes ................................................. 70

3.21 RimScan™ Wheel Profile Scanner .................................................................... 72

Setting Dimensions with RimScan™ ...................................................................72

Real-Time Predictions with RimScan and SmartWeight

3.22 BDC Laser Adhesive Weight Locator................................................................. 75

3.23 Optional HammerHead

Specific Precautions / HammerHead™ TDC Laser System................................ 78

3.24 TPMSpecs

Feature ........................................................................................ 78

™

TDC Laser Adhesive Weight Locator......................... 76

.................................... 75

4. ROAD FORCE® MEASUREMENT PROCEDURES ..................................... 81

4.1 Load Roller Operation ..........................................................................................81

4.2 Inflation Station..................................................................................................... 82

4.3 Forcematching® ................................................................................................... 83

Road Force and Runout Limits Enabled

Forcematch® Procedures .................................................................................... 84

Forcematching Using Previous Bare Rim Measurement..................................... 85

Forcematching Using Previous Road Force® Measurement ..............................86

Using ForceMatch Codes Feature....................................................................... 86

Dial Indicator Gauges Feature............................................................................. 87

Lateral/Radial Rim High Spot Indicators Feature ................................................ 87

Details/Diagnosis Explanation Key ...................................................................... 87

Encountering Forcematch® Prediction Errors ..................................................... 88

iix CONTENTS GSP9720JLR Wheel Balancer Operation Instructions

Diagnosis Mode................................... 83

Do’s and Don’ts of Road Force® Measurement.................................................. 88

4.4 QuickMatch® Tire and Wheel Mounting .............................................................. 89

Road Force Audit Mode ....................................................................................... 89

QuickMatch® Procedures .................................................................................... 90

QuickMatch® Using Previous Bare Rim Measurement....................................... 90

QuickMatch® Using Previous Loaded Runout Measurement ............................. 91

Dial Indicator Gauges Feature............................................................................. 91

Lateral/Radial Rim High Spot Indicators Feature ................................................ 92

Encountering Forcematching® or QuickMatching® Prediction Errors ................ 93

Do’s and Don’ts of Loaded Runout Measurement............................................... 93

4.5 TranzSaver™ ....................................................................................................... 94

4.6 StraightTrak® LFM (Lateral Force Measurement) ............................................... 95

Disabling StraightTrak®....................................................................................... 98

Vehicle Plan View ................................................................................................ 98

Net Tire Pull Arrow............................................................................................... 98

Road Force® Arrows ........................................................................................... 99

Changing Tag Numbers....................................................................................... 99

Show Least Pull .................................................................................................100

Show Least Vibration ......................................................................................... 100

Show Alternate Placements............................................................................... 100

Show Details ...................................................................................................... 101

Printout............................................................................................................... 101

Inflation Pressure ............................................................................................... 102

4.7 Diagnosis Explanation Screen (Limits Disabled) ............................................... 102

4.8 Diagnosis Explanation Screen (Limits Enabled) ................................................ 102

4.9 Details Screen .................................................................................................... 103

Tire and Rim Road Force® and Runout ............................................................ 103

4.10 Printouts ........................................................................................................... 105

4.11 Harmonics & T.I.R. Data/Plots ......................................................................... 106

Assembly Data Plots Screen ............................................................................. 106

Tire Data Plots Screen....................................................................................... 107

Rim Data Plots Screen....................................................................................... 108

4.12 Statistics ........................................................................................................... 108

Show Statistics................................................................................................... 108

5. EQUIPMENT INFORMATION..................................................................... 111

5.1 Software Identification ........................................................................................ 111

5.2 Program Cartridge and Security Key Removal and Installation......................... 111

5.3 Balancer Set Up ................................................................................................. 112

Display Language .............................................................................................. 113

Print Language................................................................................................... 113

Printer................................................................................................................. 113

Printout Paper Size Selection ............................................................................ 113

QuickMatch ........................................................................................................ 113

Use Runout & Road Force Limits ...................................................................... 113

Hood Autostart Feature...................................................................................... 113

Servo-Stop ......................................................................................................... 113

Balance Checkspin ............................................................................................ 113

Weight Units....................................................................................................... 113

Inflation Station Units ......................................................................................... 113

Runout Units ......................................................................................................113

Road Force Units ............................................................................................... 113

5.4 Service Mode Setup and Features..................................................................... 114

Set Date and Time ............................................................................................. 114

Prompted Inflation Station.................................................................................. 114

Prompted Centering Checks.............................................................................. 114

Runout & Road Force® Limits ........................................................................... 114

Balance Limits.................................................................................................... 116

Main Selections.................................................................................................. 116

Non-SmartWeight Options ................................................................................. 117

SmartWeight® Options - Setting Up the Force Limits ....................................... 117

GSP9720JLR Wheel Balancer Operation Instructions CONTENTS x iii

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

iv x CONTENTS GSP9720JLR Wheel Balancer Operation Instructions

1.1 Introduction

This manual provides operation instructions and information required to operate the

GSP9720JLR Balancer. Read and become familiar with the contents of this manual

prior to operating the GSP9720JLR.

The owner of the GSP9720JLR is solely responsible for arranging technical training. The GSP9720JLR is to be operated only by qualified trained technicians. Maintaining records of personnel trained is solely the responsibility of the owner and management.

This manual assumes the technician has already been trained in basic balancing procedures.

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 GSP9720JLR. 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 “GSP9720JLR Components,” page 8. These references should be read for additional information to the instructions being presented.

1. GETTING STARTED

1.2 For Your Safety

Hazard Definitions

Watch for these symbols:

CAUTION: Hazards or unsafe practices, which could result in minor

WARNING: Hazards or unsafe practices, which could result in

DANGER: Immediate hazards, which will result in severe personal

These symbols identify situations that could be detrimental to your safety and/or cause equipment damage.

personal injury or product or property damage.

severe personal injury or death.

injury or death.

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 1

IMPORTANT SAFETY INSTRUCTIONS

Read all instructions before operating the GSP9720JLR. Read and follow the instructions and warnings provided in the service, operation and specification documents of the products with which this

GSP9720JLR 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 Road Force / GSP9700 Series Road Force Measurement System 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.

ALWAYS WEAR OSHA APPROVED SAFETY GLASSES. Eyeglasses that have only impact resistant lenses are NOT safety glasses.

Keep the safety hood and its safety interlock system in good working order.

Verify that the wheel is mounted properly and that the wing nut is firmly tightened before spinning the wheel.

The safety hood must be closed before pressing the green “START” key, located on the right front corner of the console, to spin the wheel.

Hood Autostart will cause the balancer shaft to spin automatically upon hood closure. For the next Autostart, the safety hood has to be lifted to the full up position and then closed.

Raise safety hood only after wheel has come to a complete stop. If safety hood is raised before the spin is completed, the weight values will not be displayed.

Do not let cord hang over any edge or contact fan blades or hot manifolds.

The red “STOP” key, located on the right front corner of the LCD assembly, can be used for emergency stops.

DANGER: Never reach under the hood while the balancer is performing a runout

measurement or balance spin.

2x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

SAVE THESE INSTRUCTIONS

Electrical

The GSP9720JLR is manufactured to operate at a specific voltage and amperage rating.

Make sure that the appropriate electrical supply circuit is of the same voltage and amperage ratings as marked on the balancer.

WARNING: DO NOT ALTER THE ELECTRICAL PLUG. Plugging the

electrical plug into an unsuitable supply circuit will damage the equipment.

Make sure that the electrical supply circuit and the appropriate receptacle is installed with proper grounding.

To prevent the possibility of electrical shock injury or damage to the equipment when servicing the balancer, power must be disconnected by removing the power cord from the electrical power outlet.

After servicing, be sure the balancer ON/OFF switch is in the “O” (off) position before plugging the power cord into the electrical power outlet.

This device is rated as Class A for radiated emissions.

In the event of radio interference, the display read out may flicker - this is normal.

Decal Information and Placement

Right Side View

Decal 128-964-2 gives the maximum wheel diameter and maximum wheel weight for the GSP9720JLR.

Decal 128-605-2-00 cautions the user that spindle rotation may occur with foot pedal depression and to keep clear of clamping components during Quick-Thread® shaft rotation.

Decal 128-116-2 warns the user not to view the laser light with optical instruments.

Decal 128-1117-2 shows the FDA performance standards compliance.

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 3

Left Side View

Decal 128-391-2-00 cautions that the unit may automatically start upon closing of the hood when hood Autostart is enabled.

Decal 128-229-2 and decal 128-905-2 work in conjunction to caution the user to not remove the screw because of the risk of electrical shock.

Back View

Decal 128-381-2 warns the user not to remove the cover of the GSP9720JLR because of the risk of electrical shock and not to use below garage floor level.

Decal 128-229-2 and decal 128-905-2 work in conjunction to caution the user to not remove the screw because of the risk of electrical shock.

4x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

Specific Precautions/Power Source

The GSP9720JLR is intended to operate from a power source that will apply 230VAC +10% / -15%, 1 phase, 10 amp 50/60 Hz, power cable includes NEMA 20 amp plug, L6-20P, between the supply conductors of the power cord. The power cord supplied utilizes a twist lock connector, NEMA L6-20P. This machine must be connected to a 20 amp branch circuit. Please refer all power source issues to a certified electrician.

Refer to “Installation Instructions for Road Force / GSP9720 Series Balancers,” Form 5487-T.

CAUTION: A protective ground connection, through the grounding

conductor in the power cord, is essential for safe operation. Use only a power cord that is in good condition.

NOTE: For information on converting from single phase NEMA

L6-20P plug to thee phase NEMA L15-20P plug refer to

Form 5350T, “NEMA L6-20P to NEMA L15-20P Power Plug Conversion Instructions.”

Specific Precautions/BDC Laser Indicator

The BDC (Bottom Dead Center) Laser Indicator is a class 1M laser designed to aid in applying adhesive weights. The laser is not a field serviceable or adjustable part.

Use caution in regard to reflective materials around the laser and never look into the laser beam

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 5

Specific Precautions/HammerHead™ TDC Laser Indicator (Optional)

The TDC (Top Dead Center) Laser Indicator is a class 2M laser designed to aid in applying clip-on weights. The laser is not a field serviceable or adjustable part.

Use caution in regard to reflective materials around the laser and never look into the laser beam.

Turning Power ON/OFF

The ON/OFF switch is located on the back of the balancer cabinet. To turn the balancer “ON,” press the “I” side of the ON/OFF switch. To turn the balancer “OFF,” press the “O” side of the ON/OFF switch.

The system requires about twenty two seconds to “boot up.”

After the GSP9720JLR performs a self-check, the “Logo” screen will appear indicating the unit is ready for use.

6x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

Equipment Installation and Service

A factory-authorized representative should perform installation.

This equipment contains no user serviceable parts. All repairs must be referred to a qualified Hunter Service Representative.

NOTE: To replace program cartridge, refer to “Program Cartridge

and Security Key Removal and Installation,” page 111.

Equipment Specifications

Electrical

Voltage:

Amperage: 10 amperes

Wattage: 3450 watts (peak)

230VAC +10% / -15%, 1 phase, 50/60 Hz, power cable includes NEMA 20 amp plug, L6-20P

Air

Air Pressure Requirements: 100-175 PSI (6.9-12.0 bar)

Approximate Air Consumption: 4 CFM (110 Liters/Minute)

Atmospherics

Temperature:

Relative Humidity: Up to 95% Non-condensing

Altitude: Up to 6000 ft. (1829 m)

+32qF to +122qF (0qC to +50qC)

Sound Pressure Level

Equivalent continuous A-weighted sound pressure at operator’s position does not exceed 70 dB (A).

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 7

Safety Summary

Explanation of Symbols

These symbols may appear on the equipment.

Alternating current.

Earth ground terminal.

Protective conductor terminal.

l ON (supply) condition.

OFF (supply) condition.

Risk of electrical shock.

Stand-by switch.

Not intended for connection to public telecommunications network.

1.3 GSP9720JLR Components

8x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

Standard Accessories

A. 106-82-2 Sleeve, Scratch Guard for Small Cup F. 221-589-2 Weight Hammer/Pliers

B. 175-353-1 Polymer Cup (4.5” O.D.) G. 20-1650-1 Rim Tags

C. 76-433-1 Quick Take-Up Wing Nut with Handles H. 221-659-2 Adhesive Weight Scraper

D. 221-658-2 Hammer Head Protectors (4) I. 223-68-1 Pressure Ring

E. 46-320-2 Spacer J. 65-72-2 Calibration Weight

For optional accessories, refer to Wheel Balancer Brochure, Form 3203-T.

JLR Wheel Mounting Kit

A. 192-152-2 Standard Cone

B. 192-156-2 JLR Cone

C. 20-1839-1 Kit, Universal Flange Plate

For optional accessories, refer to Wheel Balancer Brochure, Form 3203-T.

B C

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 9

1.4 Operating the Console

Using Softkeys

The “softkeys,” located on the LCD support console directly beneath the LCD, provide operator control of the balancer. The keys are identified as:

K1 Key

K2 Key

K3 Key

K4 Key

The four menu labels that appear at the bottom of each video screen are referred to as the “softkey labels.” Each label indicates the action that the program takes when the corresponding K1, K2, K3, or K4 key is pressed.

The display between the “K2” and “K3” labels indicates how many rows of labels are available. Most screens have only one or two rows, however more rows are possible. The green box indicates the row that is currently displayed.

The menu row is changed by pressing the menu shift key, pressed, the menu labels change to the next row down. If the last row is currently displayed, the menu labels change to the first row.

Throughout this manual, the statement press “nnnnnnn” means press the softkey

with the label “nnnnnnn.” If the required label is not on the current menu, press to change rows until the desired label is displayed.

Menu Shift Key

Start Key

Stop Key

Reset Key

. When this key is

10x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

Using Control Knob

The control knob is located to the right of the softkeys. The control knob accesses the on-screen switches and manually inputs data. The available on-screen switches are dependent upon the setup configuration of the balancer.

Pushing in on the control knob cycles through the available on-screen switches on the current primary screen. Rotating the control knob clockwise or counter-clockwise changes the setting for the selected on-screen switch.

For example, in the “Balance” primary screen, pushing in on the control knob will cycle through the grams to ounces, the static and dynamic, and the SmartWeight/Standard balance screen switches. After selecting an on-screen switch, the setting may be selected by rotating the control knob. The “selected” switch is the one showing the hand.

GSP9720JLR Wheel Balancer Operation Instructions Getting Started x 11

Primary Balancing Display

The control knob can also be used to switch between SmartWeight and traditional balancing, as long as both traditional and SmartWeight modes are enabled in setup. Press the knob until the SmartWeight is highlighted or the hand appears on the static/dynamic switch. Next, press and hold the control knob until the opposite balance mode icon appears.

NOTE: If SmartWeight mode is enabled, the balancer will always

Resetting the Program

The wheel balancing program may be reset at anytime by using the key, located on the LCD support console directly beneath the LCD. To reset the balancer, press the reset key twice within a four-second period without pressing any other keys inbetween. This prevents a single accidental keystroke from resetting the system.

When the balancer is reset, the information collected for the wheel balance in progress is erased and the display returns to the “Logo” screen.

return to SmartWeight balancing upon dimension entry or a reset.

12x Getting Started GSP9720JLR Wheel Balancer Operation Instructions

2. INTRODUCTION TO BALANCING

2.1 Balance Forces

Balancing Theory - Static Imbalance

As the word static implies, the tire will be balanced when at rest. For example, if an unmoving assembly was centered on a cone and was balanced, it would be statically balanced. A “bubble balancer” is designed to statically balance a tire/wheel assembly.

IMBALANCE

FORCE

FRONT VIEW

CUPPING

STATIC IMBALANCE

Static imbalance is where there is one amount of weight located in the center of the tire/wheel assembly causing an imbalance. As the weight rotates, centrifugal forces are created causing the wheel to lift as the weight reaches top dead center. This lifting motion causes the tire/wheel assembly to move “up and down” creating a bounce to be felt. This static imbalance condition is evident by a “jiggle” or up-down movement of the steering wheel. These vibrations may also be apparent in the body, with or without steering wheel shake.

A statically imbalanced tire driven for an extended period may cause “cupping” in the tire’s tread, create vibration, and adversely effect handling.

Static balancing alone is a seldom-recommended procedure. For example, a single weight is commonly placed on the inner clip weight position for cosmetic purposes. This is not a recommended practice and usually insures the assembly is not properly dynamically balanced. The assembly may then experience side-to-side imbalance while in motion, causing a shimmy condition and objectionable vibration.

NON RECOMMENDED FORM OF

STATIC BALANCING

BALANCE WEIGHT IS NOT IN

CENTER OF WHEEL

GSP9720JLR Wheel Balancer Operation Instructions Introduction to Balancing x 13

Balancing Theory - Couple Imbalance

Dynamic imbalance is defined as a condition where one or more locations of the tire/wheel assembly are heavier causing an imbalance force and/or an imbalance shake and wobble. Shown below is a tire/wheel assembly with two heavy spots of equal weight which are located 180 degrees radically from each other on opposite sides. As this assembly rotates, centrifugal forces cause a large imbalance wobble to be created, but the imbalance force (as well as the static imbalance) will be zero. A wheel with this condition will cause a wobble or shimmy to be felt in the steering wheel. Excessive dynamic imbalance of this type creates a shimmy that transfers through the suspension components to the occupants of the vehicle, especially at higher speeds.

IMBALANCE WOBBLE

(LATERAL TWIST OR TORQUE)

FRONT VIEW

ZERO STATIC IMBALANCE WITH LARGE

COUPLE IMBALANCE

Modern “dynamic” balancers spin the wheel in order to measure both the up and down static imbalance force and couple wobble or shimmy related imbalance (sideto-side).

Dynamic balancers direct the operator to place correction weights on the inside and outside correction locations of the rim, or a single weight away from the center of the wheel, so that both imbalance shake (static) and imbalance wobble (couple) will be eliminated.

14x Introduction to Balancing GSP9720JLR Wheel Balancer Operation Instructions

2.2 SmartWeight® Balancing Technology

SmartWeight® Balancing Technology is a method of reducing forces on a wheel during balancing. This results in less weight used, and less time balancing tires.

SmartWeight balancing technology is not a procedure. Instead, it measures the forces of couple side-to-side shimmy and static up-and-down shake and computes weight to reduce these forces. This reduces the amount of weight, reduces time, reduces check spins, chasing weights, and saves the shop time and money.

SmartWeight balancing technology can reduce the number of steps in the balancing process. Not only does SmartWeight balancing technology give the customer a better riding vehicle, it also helps the environment by using less corrective weight, and speeds up the wheel balance process which saves the shop time and money.

Static and non-rounding modes are eliminated to simplify operation. Always enter at least two weight positions during wheel measurement in SmartWeight balancing mode. All other functions are identical to the traditional balancing method.

SmartWeight balancing technology will also compute the amount of weight saved over time. A histogram of weight savings statistics can be viewed from the “Logo” screen.

Static and Dynamic Imbalance Sensitivity

As a general rule of thumb, to achieve the best balance on an average sized tire and wheel assembly (15 inch rim):

Residual static imbalance should be less than 1/4 ounce (7 grams).

Residual couple imbalance should be less than 3/4 ounce (21 grams).

Residual couple imbalance is preferred over remaining static imbalance.

It takes much more residual couple imbalance weight to cause a vibration than the same amount of static imbalance correction weight.

The larger the diameter used for weight placement, the smaller the amount of correction weight is required for static correction.

The wider the distance between the two weight placement locations, the smaller the amount of correction weight is required for couple correction.

If static balance is the only option, always verify that the remaining couple residual imbalance is within acceptable tolerance. This can only be verified using SmartWeight balancing.

NOTE: SmartWeight balancing performs this check automatically.

For detailed information on adjustment and setup of modes of wheel balancing sensitivity see “Road Force® Measurement Procedures,” on page 81.

GSP9720JLR Wheel Balancer Operation Instructions Introduction to Balancing

2.3 SmartWeight® Balancing Technology Dynamic Weight Planes

SmartWeight requires the operator to enter at least two weight planes. This balancing method will automatically determine if one or both weight planes require a weight to be added. This eliminates “blinded” static single plane balancing, which alone may not be sufficient to solve couple vibration issues.

The GSP9720JLR balancer offers two primary ways to balance tires:

1. SmartWeight® Balancing Technology

2. Traditional balancing technology

Both of these methods can balance tires dynamically. The main difference is SmartWeight will reduce the amount of corrective weight in a basic wheel balancing situation and automatically optimize static force reduction and single plane weight placement.

2.4 Using SmartWeight® Balancing Technology

The SmartWeight balancing forces display varies greatly from the standard balancing display. SmartWeight tire graphs independently display the static and couple forces within a tire/wheel assembly. A single plane (static) mode and non-round off modes are no longer necessary. The traditional “static” and “dynamic” modes are eliminated. The traditional non-round off mode is eliminated. These modes are no longer necessary with SmartWeight balancing.

The red-dotted line represents the acceptable amount of force the tire and wheel assembly can have that will not result in a ride problem. Any forces below that line will be shown in green. Any forces that are above that level will be shown in red and indicate an excessive amount of force.

Install the tire/wheel assembly as normal. Rim measurements are not required to determine if the balance forces are exceeded. Lower the hood and spin.

Introduction to Balancing GSP9720JLR Wheel Balancer Operation Instructions

Prior to balance spin, the tire graphs will display no color. The SmartWeight balance

force graphs will display red for excessive forces and green for acceptable amounts of force. If the SmartWeight balancing procedure requires correction weights wheel dimensions will be required. Enter the dimensions using the Dataset

arms.

The screen will display the amount and location of corrective weight necessary. Install the weights in the appropriate manner using the correct type of weight and lower the hood to re-spin and check the balance. Instead of displaying zeros in the weight display, SmartWeight balancing displays “OK,” indicating that the force levels are reduced to within the acceptable tolerances.

Switching from SmartWeight® Balancing Technology to Traditional Dynamic Balancing Modes

NOTE: To quickly exit SmartWeight and force a static balance, input

the one static plane twice tapping the foot pedal twice (without moving the dataset arm). Respond “yes” to the confirmation screen to exit SmartWeight. The balancer will revert back to SmartWeight upon another dimension entry or a reset.

At any time, SmartWeight balancing technology can be switched to standard balancing as long as both standard and SmartWeight balancing modes are enabled in setup.

Press and hold down the knob until SmartWeight balancing is highlighted. Once highlighted, press and hold the knob till the standard balance icons appear. Cycle back the same way.

NOTE: SmartWeight balancing technology is the default balancing

method and is the most recommended way to accurately balance wheel/tire assemblies.

GSP9720JLR Wheel Balancer Operation Instructions Introduction to Balancing

2.5 SmartWeight Forces and Limits Feature

The static and couple forces are adjustable and show equivalent weight amounts on an example 15”x7” wheel. Static force is measured in oz. per inch. Couple force is measured in oz. per inch

. The limits are adjustable and defaults are preset for

virtually all vehicle sensitivity limits.

2.6 Weightsaver® Wheel Balancing Feature

NOTE: Balance Limits setup may only be viewed when in service

mode.

Essentially, SmartWeight® sets limits on the individual forces of static and couple. Weightsaver® adjusts the percentage of the couple force to further save weight, allowing a fine-tuned balance and weight use reduction. With SmartWeight, a bar graph in the green is within acceptable limits. Weightsaver® allows the couple bar graph window of residual couple force to remain.

The Weightsaver® wheel balancing feature is a percentage of the force limit intentionally left in the assembly to save weights.

Adjusted lower value favors a lower residual force and a higher percentage value favors weight savings. The following example is set at the default of 75%. A 75% residual goal means that Weightsaver® allows 75% of the maximum allowed couple force to remain. This saves more weight, saves time, and saves money.

Introduction to Balancing GSP9720JLR Wheel Balancer Operation Instructions

Weightsaver® residual goal is only used to reduce weight use against the couple

force correction.

Static force correction is always optimized and cancelled to promote more accurate balancing than a traditional balance using fixed plane weight rounding function. This is critical when balancer to vehicle centering errors affects the residual static forces on the vehicle.

2.7 SmartWeight Odometer

SmartWeight Odometer displays the accumulated savings on the balance screen.

GSP9720JLR Wheel Balancer Operation Instructions Introduction to Balancing

The odometer can be enabled/disabled in setup, (service mode) showing weight

savings, money savings or both. Within “Balancing Limits” setup, choose the display of SmartWeight Odometer or/and per-spin savings. Factory default is the display of odometers and no per-spin display.

Show Savings Summary

When the SmartWeight Odometer is present on screen, press the “Show Savings Summary” softkey for detailed explanation of savings.

NOTE: “Show Savings Summary” will be “projected savings” when

selected time frame exceeds actual time of use.

A summary of the savings due to SmartWeight is displayed.

NOTE: “Set Assumptions” key available in “Service Mode” only.

Rolling the selector knob will change from Daily to Weekly to Monthly Yearly and Five Year savings.

Select “Print Screen” to print the weight savings displayed.

Introduction to Balancing GSP9720JLR Wheel Balancer Operation Instructions

To enter actual weight costs and labor costs for cost savings calculation, select “Set

Assumptions” (service mode) softkey for the “Smart Weight” screen.

NOTE: “Installation Date” must be entered for Investment Return

calculations to function.

Enter requested information with control knob: rotate to change value and press to advance to next field.

NOTE: “Set Assumptions” key available in “Service Mode” only.

Select “Enter Install Date” softkey to enter a date for the savings screen to properly show time to savings values.

Select “Exit” softkey when done.

To view the payback of balancer from savings due to SmartWeight, select “Investment Return” softkey from the “Smart Weight” screen.

GSP9720JLR Wheel Balancer Operation Instructions Introduction to Balancing

Rolling the selector knob will change from months to years of payback. Pressing the selector knob and then rolling it will change from percentage payback to total monetary value.

Select “Print Screen” to print the weight savings displayed.

Select “Exit” softkey when done.

To view additional details of savings due to SmartWeight, select “Show Details”

softkey from the “Smart Weight” screen.

The page shows the amount of weight savings, highlighted in blue, using SmartWeight

balancing technology. The savings are shown in both

actual weight and percentage.

Select “Print Screen” to print the weight savings displayed.

Select “Exit” softkey when done.

NOTE: The statistics can be cleared by selecting the “Clear Data”

softkey. This could be used if tracking weight during a specific period. The “Clear Data” key may only be selected when in Service Mode. For more information refer to

“Service Mode Setup and Features,” page 113.

Introduction to Balancing GSP9720JLR Wheel Balancer Operation Instructions

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