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Page 3-5

CHAPTER 3 CHECKOUT, CALIBRATION AND MAINTENANCE

Effective
09/2005

P14 USER CALIBRATION PROCEDURE

The calibration function compares current transducer output to
factory calibration transducer output (P83).  If the range is not
acceptable the balancer reverts back to the known last calibra-
tion.  If a unit continues to chase weight after P14 the unit will
require further diagnostics.    

A Pruefrotor is preferred

however a fine balanced (.10) tire and wheel can be
substituded.

NOTE:

TO CALIBRATE THE MOTORCYCLE BAL-
ANCER, A 28MM SHAFT, CONE AND WING
NUT IS NEEDED.

1.

Activate Calibration

.  Press and hold the 

P 

key while

turning the 

Diameter/Function

 Knob

(Figure 3-2) until the display reads 

“P”  “14”

.

• Once P14 activates, the display will read

"CAL" " GAN"

 for one second.

• The display will then read  

"SPN"  " 1 "

.

• Mount a balanced wheel/tire to the shaft.

(Figure 3-2)

2.

Spin shaft with balanced wheel only

.

(Figure 3-3)

• Displays 

"SPN"  "UP"

 when shaft reaches 60 rpm.

• Displays 

"COA"  "ST "

 with a beep sound when shaft

speed has exceeded 120 rpm.

• Displays

 "CAL"  "1"

  when the speed drops to 119 rpm.

The machine is taking data and doing calcula
tions. After taking data, shaft is automatically braked to
a stopped.

• Displays 

"SPN"  "2"

  when shaft stops.

3.

Spin shaft with calibration slug on the left side

. Mount

calibration slug (EAM0005D13A) to the shaft.  (Figure 3-
4).

• Displays 

"SPN"  "UP"

 when shaft reaches 60 rpm.

• Displays 

"COA"  "ST "

 with a beep sound when shaft

speed is over 120 rpm.

• Displays 

"CAL"  "2" 

 when the speed drop down to 119

rpm. At this moment the machine is taking data
and doing calculation work. After taking data, shaft is
automatically stopped.

• Displays 

"CAL"  "FIN"

 when the second step of calibra-

tion is finished and machine says the calibration
result is 

FINE

.

• Displays 

"---"  "---"

 when shaft stops and machine is in

the idle state.

NOTE:

THE BALANCER WILL NOT FUNCTION UNTIL A
VALID CALIBRATION HAS BEEN PERFORMED.
ERROR MESSAGES WOULD BE DISPLAYED IN
THE EVENT PROBLEMS OCCUR DURING THE
CALIBRATION PROCESS.

Figure 3-2

Figure 3-3

Figure 3-4

Diameter Function

P Key

Summary of Contents for EEWB314A

Page 1: ...Service Manual SEPTEMBER 2005 WHEEL BALANCER EEWB314A EEWB525A EEWB721A...

Page 2: ...dential 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 who...

Page 3: ...OR TAGOUT SYSTEM PROCEDURE 1 1 ELECTRICAL REQUIREMENTS 1 1 AC DC DISTRIBUTION 1 2 DC THEORY OF OPERATION 1 2 PROCESSOR BOARD 1 2 ENCODER BOARD 1 2 DISTANCE POTENTIOMETER 1 2 TRANSDUCERS 1 2 DISPLAY BO...

Page 4: ...AND RIGHT WEIGHTS 3 6 P43 RESETTING THE COUNTERS 3 6 P44 READ OR RESET PRODUCTIVITY OF USER 3 6 P50 READ OUTPUT VOLTAGE OF POTENTIOMETER OF SAPE 3 7 P53 DISPLAY TEST 3 7 P59 DISPLAYS THE UNBALANCE OF...

Page 5: ...andard Dynamic and Static modes there are 5 Alloy modes each of which are illustrated by LEDs on the balancer touch panel when activated These modes are used for vehicle tire and wheels Alloy modes 1...

Page 6: ...shaft speed 90RPM Cycle time 15 seconds with an average 14 tire wheel combination Balance Types Five 2 plane alloy modes plus static dynamic and Match Balance modes Accuracy 0 1 oz 2 8g Weight Positio...

Page 7: ...ug from the outlet Grasp plug and pull to disconnect 5 To reduce the risk of fire do not operate equipment in the vicinity of open containers of flammable liquids gasoline 6 Keep hair loose fitting cl...

Page 8: ...as the equipment Grasp the PCB from opposite sides using your fingertips Do not grasp the components on the board When inserting PCB s Place boards on a grounded static mat after removal Remove the n...

Page 9: ...l operating controls to make certain the equipment will not operate CAUTION RETURN OPERATING CONTROL S TO NEUTRAL OR OFF POSITION AFTER THE TEST DE ENERGIZED STATE 6 The equipment is now locked out or...

Page 10: ...eceives this power from the Power Supply Board at X1 pins 32 and 34 This 5 volts also passes through the Processor Board and supplies the Encoder PCB and the Distance SAPE ENCODER BOARD The encoder re...

Page 11: ...Page 1 3 CHAPTER 1 AC DC POWER DISTRIBUTION Effective 09 2005 Power Supply Schematic...

Page 12: ...BUTION Effective 09 2005 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 N...

Page 13: ...ge 1 2 NO Replace fuse Is 5 VDC present at pins 11 and 14 at X1 NO Replace Power Board Is 5 VDC LED lit up on Processor Board NO Replace Processor Board Is 5 VDC present at pins 3 and 6 at X2 NO Repla...

Page 14: ...NO Replace the front transducer Is both the Front and Rear transducer tight NO Adjust to specification and retest Check P 36 does the left display change from 0 to 511 and the right display change fr...

Page 15: ...alance knowledge of signal magnitude and timing are both required Timing is determined by the encoder which consists of a electronic pcb connected to the tube of the shaft A series of timing marks are...

Page 16: ...o Figures 2 1 and 2 2 1 Display for inner plane imbalance 2 Inner plane imbalance position indicator 3 Outer plane imbalance position indicator 4 Display for outer plane imbalance 5 Display all parame...

Page 17: ...nd the tone generator and the LED display It receives the information from the main processor pcb via the power supply pcb This information is passed back to the processor via the power supply TEMPERA...

Page 18: ...e slots must have a dull black background Should a dirt particle have settled on a web or in a slot it can be lifted off of the slotted sleeve with self adhesive tape by applying it onto a strip of st...

Page 19: ...ble tolerance is 0 0015 T I R Total Indicated Runout If the surface measures out of tolerance replace the vibratory system 8 Perform a P80 and a P83 using the Pruefrotor and retest These test can be f...

Page 20: ...nals 5 Output Once all voltages and signal levels are present a proper output can be expected TOOLS REQUIRED WHEN SERVICING THE HANDSPIN BALANCER Tools Metric Sockets 4mm Thru 15mm Metric Wrenches 6mm...

Page 21: ...erApplication P7 Toggle switch of millimeter and inch for diameter measurement P12 Read counters P14 Calibration by user P18 Enter ALU S mode press balancing mode key to exit and back to DYN mode P19...

Page 22: ...ng on the balancing procedure Once the calibration is done machine displays ADP FIN to indicate the calibration is successful Once the shaft stops machine displays and exits the P4 automatically The m...

Page 23: ...s SPN UP when shaft reaches 60 rpm Displays COA ST with a beep sound when shaft speed has exceeded 120 rpm Displays CAL 1 when the speed drops to 119 rpm The machine is taking data and doing calcula t...

Page 24: ...position in integer form from 0 to 511 in left window and angle in floating form from 0 00 to 359 in right window Meanwhile machine lights on the position bars to indicate the left weight position So...

Page 25: ...RH display Force the shaft rearward should cause the voltage to a negative polarity forcing the shaft forward should cause a positive polarity The maximum amount of voltage for both positive and nega...

Page 26: ...will automatically switch to default parameters 15 X 6 5 Press the P button to change from default parameters to user defined parameters The display will change to USE CST PAR for one second and then...

Page 27: ...Displays CAL GOO d when the third step of calibration is finished and the calibration is successful or displays CAL FAL L if the calibration fails Displays SPN 4 9 Remove the 3 5 oz weight from the Pr...

Page 28: ...er to the new Encoder P86 COPY CONTENTS OF ENCODER TO MAIN PCB ONLY AVAILABLE IN INITIALIZATION When a Main PCB is replaced and on initial power up the unit will display P85 The technician needs to pr...

Page 29: ...ht tray The display is held in place with velcro and should remove easily Figure 3 14 There are four 4 major components on the control panel Figure 3 15 Digital Processor PCB Power PCB Display PCB Key...

Page 30: ...tely 45 seconds After the completion of the upload the balancer will continuously emit beeps CAUTION DO NOT REMOVE POWER FROM THE UNIT DURING THE UPLOAD PROCESS PERMA NENT DAMAGE TO THE MAIN PCB WILL...

Page 31: ...is marked with a black band Insert the clip into the transducer firmly snapping it into place Once the wire is installed it cannot be removed without destroying the transducer Apply a small amount of...

Page 32: ...Loosen the two phillip screws holding the brake solenoid in place Slide the brake solenoid towards the brake pad until the solenoid plunger makes contact with the back of the brake pad maintaining the...

Page 33: ...e wrap secure the SAPE spring Figure 3 26 After securing the spring with a tie wrap disconnect the SAPE string from the SAPE wheel and slowly let the SAPE wheel release tension from the spring From th...

Page 34: ...and pull the string through until the crimped end reaches the hole Figure 3 30 The SAPE string is 20 5 from the end of the loop on one end to the crimped end Attached the looped end of the string to...

Page 35: ...ttery regulated to 12VDC Should a battery require charging the balancer can quickly be switched from battery voltage to shop power with the flip of a switch To replace the Voltage Regulator the SAPE a...

Page 36: ...Insert spacers Apply Loctite to the hex bolts With the aid of a helper start the two lower hex bolts Install the 4 remaining hex bolts and tighten to 22ft lbs 3 in lbs Install the rear transducer and...

Page 37: ......

Page 38: ...TEEWB325A REV A rjh 2005 Snap on Incorporated All Rights Reserved Printed in U S A Snapon Equipment Services 309 Exchange Avenue Conway AR 72034...

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