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Table of Contents
Related Manuals for Snap-on Incorporated EEWB314A
Summary of Contents for Snap-on Incorporated EEWB314A
- Page 1 Service Manual WHEEL BALANCER EEWB314A, EEWB525A, EEWB721A SEPTEMBER 2005...
- Page 2 All information contained or disclosed in this document is considered confidential and proprietary by Snap-on Tools Company. All manufacturing, use, reproduction, and sales rights are reserved by Snap-on Tools Company and the information contained herein shall not be used in whole or in part without the express written consent of Snap-on Tools Company.
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Page 3: Table Of Contents
Table Contents INTRODUCTION GENERAL ................................I FUNCTIONAL DESCRIPTION ........................... I BASIC BALANCER OPERATION ........................ I WEIGHT APPLICATION ..........................I ALLOY MODES ............................I ALU-S MODE .............................. I DISPLAY / CONTROL PANEL ........................I GENERAL SPECIFICATIONS AND MACHINE FEATURES ................II MAJOR FEATURES ........................... - Page 4 CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE SHAFT IMBALANCE, WHEEL ADAPTER TO SHAFT REMOUNT TEST ............ 3-1 TOOLS REQUIRED WHEN SERVICING THE HANDSPIN BALANCER ............. 3-2 OTHER SUPPLIES ..........................3-2 FUNCTIONS OF HAND SPIN BALANCER ....................3-3 SERVICE CODES ..........................3-3 P CODE DESCRIPTIONS OF THE BALANCER ..................
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Page 5: Introduction
INTRODUCTION GENERAL The EEWB525A and EEWB721A wheel balancer is designed to compute static and dynamic imbalance of car, light truck, motorcycle and truck wheels. For a more detailed description of each application see the Operators Manual FUNCTIONAL DESCRIPTION BASIC BALANCER OPERATION Once the balancer reaches balancing speed (120 RPM) a tone will sound, this alerts the operator to release the handle. -
Page 6: General Specifications And Machine Features
INTRODUCTION GENERAL SPECIFICATIONS AND MACHINE FEATURES MAJOR FEATURES Auto Brake After Measuring Cycle Two Window Display Easy Electronic Access SAPE (1d) Auto Distance Parameter Entry Membrane Panel Data Entry Four (4) Mounting Cones ALU-S Function Quick Nut With Speed Knobs Match Balance Total Spin Counter Calibration Counter... - Page 7 IMPORTANT SAFETY INSTRUCTIONS When using this equipment, basic safety precautions should always be followed, including the following: Read all instructions. Do not operate equipment with a damaged power cord or if the equipment has been damaged - until it has been examined by a qualified authorized service technician. If an extension cord is used, a cord with a current rating equal to or more than that of the machine should be used.
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Page 8: Electrical Safety Precautions
INTRODUCTION ELECTRICAL SAFETY PRECAUTIONS Make sure the balancer is unplugged before disconnecting any wires in preparation for replacing any boards, cables or other items within the unit. Use the “Lockout and/or Tagout” procedure. SERVICE GUIDELINES / HANDLING STATIC SENSITIVE PCB’S Electrostatic discharge can destroy high impedance ICs if uncontrolled. -
Page 9: Chapter 1 Ac/Dc Power Distribution
CHAPTER 1 AC/DC POWER DISTRIBUTION LOCKOUT AND/OR TAGOUT SYSTEM PROCEDURE 1. Notify all affected employees that a lockout or tagout system is going to be utilized and why. The autho- rized employee should know the electrical power the machine uses and it’s hazards. 2. -
Page 10: Ac / Dc Distribution
CHAPTER 1 AC/DC POWER DISTRIBUTION AC / DC DISTRIBUTION The balancer is supplied with a power transformer. It is critical to have the proper input voltage in order for the balncer to operate correctly. The transformer is rated at 9VAC @ 1900 milliamps. 9VAC is supplied to the Power Supply pcb. - Page 11 CHAPTER 1 AC/DC POWER DISTRIBUTION Effective Page 1-3 09/2005...
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Page 12: Processor Pcb
CHAPTER 1 AC/DC POWER DISTRIBUTION PROCESSOR PCB X1 - From Power Supply. X3 - Encoder, Tranducers & Temp Sensor. X6 - Distance SAPE • Pin 1=Gnd • Pin 2=Output • Pin 3=5 VDC X7 - Not Used on Hand Spin X8 - Not Used on Hand Spin X9 - Not Used on Hand Spin KEYPAD SCHEMATIC... -
Page 13: Troubleshooting
CHAPTER 1 AC/DC POWER DISTRIBUTION TROUBLESHOOTING COMPLAINT CORRECTIVE ACTION I. Machine will not power up. Is the machine plugged in at the wall? NO-> Plug machine in. Is the balancer plugged in at the back? NO-> Plug machine in. Does transformer output read 9 VAC at the end of the receptacle? NO->... - Page 14 CHAPTER 1 AC/DC POWER DISTRIBUTION IV. Machine chases weights. Are the mounting accessories in good condition? NO-> Clean backing plate and all accessories. Replace if necessary. Has the balancer been calibrated? NO-> Perform P14 and retest. Perform P80 and P83 and retest (Pruefrotor required).
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Page 15: Chapter 2 Theory Of Operation
THEORY OF OPERATION FUNCTIONAL DESCRIPTION The EEWB314A wheel balancer is designed to compute static and dynamic imbalance of car, light truck, motorcycle and truck wheels. Wheels are attached to the shaft using precision centering adapters and retainers. The shaft rotates on precision bearings on the shaft support. -
Page 16: Terminology
CHAPTER 2 THEORY OF OPERATION TERMINOLOGY Figure 2-1 Display Layout Before using the wheel balancer it is suggested that you become familiar with the terminology of the machine’s com- ponents. Refer to Figures 2-1 and 2-2. 1. Display for inner plane imbalance 2. -
Page 17: Balancer Components
CHAPTER 2 THEORY OF OPERATION BALANCER COMPONENTS UPPER DISPLAY The upper display is made up of 4 major components. Main processor, Power Supply, Digital Display, Keypad. The upper display processes all information along with providing all electrical requirements to all sub compo- nents. -
Page 18: Encoder
CHAPTER 2 THEORY OF OPERATION ENCODER The encoder is built into the shaft with no adjustments. The encoder disk is built onto the shaft and cannot be replaced without replacing the vibratory member.The new incremental encoder is fitted in the vibratory tube and consists of a reflective slotted sleeve which is mounted on the main shaft and the optoelectronic unit. -
Page 19: Chapter 3 Checkout, Calibration And Maintenance
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE SHAFT IMBALANCE, WHEEL ADAPTER TO SHAFT REMOUNT TEST This test proves the wheel balancer centering device is balanced, turns true and proves the centering device inside taper and balancer shaft outside taper (mating surfaces) are true. 1. -
Page 20: Tools Required When Servicing The Handspin Balancer
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE TROUBLESHOOT USING CORRECT DIAGNOSTICS PROCEDURES! Balancers are relatively simple pieces of machinery. With proper diagnostic procedures, balancer problems should be quickly resolved. The Basics that the technician must never overlook are: 1. AC Power. The unit must be supplied with correct AC power. 2. -
Page 21: Functions Of Hand Spin Balancer
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE FUNCTIONS OF HAND SPIN BALANCER All the service codes are part of P codes. The procedure for activating a P code is described below. 1. Press the P key, the left window displays letter “P” and right window displays current P code number. If the machine does not activate a P code in this power cycle, it displays a number of “0”. -
Page 22: P Code Descriptions Of The Balancer
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P CODE DESCRIPTIONS OF THE BALANCER P2 RIM WIDTH INCH / MILLIMETER Selecting P2 toggles the balancer between inch and millimeters for rim width. Unit will display “DtH I NCH” for inches pressing P2 again toggles to millimeters and the display changes to “DtH” for millimeters. P3 GRAM / OUNCE Selecting P3 toggles the balancer between Grams and Ounces. -
Page 23: P14 User Calibration Procedure
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P14 USER CALIBRATION PROCEDURE The calibration function compares current transducer output to P Key factory calibration transducer output (P83). If the range is not acceptable the balancer reverts back to the known last calibra- tion. -
Page 24: P18 Alu-S Mode
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P18 ALU-S MODE Aluminum Static: See the operation manual for a detailed explanation. P19 ALU-S SINGLE PLANE BALANCING MODE See the operation manual for a detailed explanation. P20 TOGGLE VEHICLE / MOTORCYCLE SOFTWARE Enters the balancer software into a motorcycle software mode. See the operators manual for a detailed expla- nation of the use of the motorcycle software. -
Page 25: P50 Read Output Voltage Of Potentiometer Of Sape
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P50 READ OUTPUT VOLTAGE OF POTENTIOMETER OF SAPE. This displays the output voltage of the distance potentiometer. Slide the SAPE in the home position. Hold the P key and turn Diameter funtion knob until P50 is displayed and release the P key. Display in the Right Hand window should read 4.00VDC +/- 0.10. -
Page 26: P 83 Factory Calibration Procedure
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P 83 FACTORY CALIBRATION PROCEDURE NOTE: THE F80 CALIBRATION MUST BE DONE BEFORE THIS OPERATION. NOTE: THE MOTORCYCLE BALANCER REQUIRES A 28MM SHAFT, CONE AND WING NUT TO FIT THE SHAFT BE USED. A balanced tire and wheel assembly can be substituted if a Pruefrotor is not available. The calibration proce- dures are the same and can easily be performed. - Page 27 CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE Attach the 3.5 ounce weight (100 gr) on the inside of the Pruefrotor/Tire & Wheel. (Figure 3-9) • Spin the Pruefrotor/Tire & Wheel by lowering the hood or pressing the enter key. • Displays “CAL” ‘2” when the shaft reaches 90 RPM’s. The machine is taking data and doing calculations.
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Page 28: P84 Empty Shaft Calibration Procedure
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE P84 EMPTY SHAFT CALIBRATION PROCEDURE NOTE: THIS PROCEDURE CAN ONLY BE DONE USING THE PRUEFROTOR. 1. Hold the P key and turn Diameter funtion knob until “P” “84” is dis- played and release the P key. The display changes to “CAL” “SHF” for one second. -
Page 29: Servicing The Balancer
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE SERVICING THE BALANCER NOTE: BEFORE OPENING THE MACHINE FOR SERVICE, DISCONNECT ELECTRICAL SUPPLY LINE. The balancer is supplied with a power transformer. It is critical to have the proper input voltage in order for the balancer to operate correctly. -
Page 30: Main Processor Replacement
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE MAIN PROCESSOR REPLACEMENT Tools required: • Programmed EPROM The Processor must be programmed with software before it can be used. Disconnect the power from the unit. Locate the Main Processor PCB, on the rear of the Display PCB. -
Page 31: Transducer Removal
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE TRANSDUCER REMOVAL • The transducers are held in place with setscrews and jam nuts. • Disconnect the power from the rear of the machine. • Remove the display panel. • Remove the weight tray. •... -
Page 32: Brake Solenoid
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE BRAKE SOLENOID Phillip screws • Disconnect the power from the rear of the 1/16” machine. • Remove the Display panel • Remove the weight tray. • Disconnect wiring harness from the brake solenoid. • Remove the two #2 phillip screws. (Figure 3-20) •... -
Page 33: Sape System
CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE SAPE SYSTEM This process outlines the procedure when working with the SAPE return spring. Care should be taken before working with the SAPE return sping, failure to follow these procedures may cause the SAPE spring to un- wind and could cause injury. - Page 34 CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE Flip the SAPE wheel over and slide the SAPE center hole over the distance potentiometer and secure tighten the 10mm nut securing the SAPE wheel. (Figure 3-29) Once the nut has been secured using a pair of cutters snip the tie wrap and remove.
- Page 35 CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE VOLTAGE REGULATOR The balancer can operate using AC power or using the Snap-on Versavolt battery pack used to power Snap- on power tools. The balancer will accomodate either the 12V, 14.4V or 18V battery pack. The voltage regulator is designed to keep the incoming power from the battery regulated to 12VDC.
- Page 36 CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE VIBRATORY MEMBER REMOVAL • Disconnect the power from the rear of the machine. • Remove the Display panel. • Remove the weight tray. • Remove the rear transducer. • Using 1/4” drive 6mm hex head SOT part # TMAM6E remove the six (6mm) hex bolts to the vibratory.
- Page 38 Snapon Equipment Services 309 Exchange Avenue Conway, AR 72034 rjh...© TEEWB325A (REV A) 2005 Snap-on Incorporated. All Rights Reserved Printed in U.S.A.
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parts for balancer EEWB314A
Available parts for the Snap-on EEWB314A balancer include:
- Encoder Board
- Main Processor Board
- Vibratory System
- Distance Gauge
- Potentiometer
- Program EPROM
- Display PCB
- Main Control Panel
- Weight Tray
These parts are referenced for replacement or servicing in the provided context.
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