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Home >> Audi >> 2008 >> A5 Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> General, Technical Data (Brakes) (Coupe) >> 00 General, Technical Data >> Brakes Inspection >> Ceramic Brake Rotor, Determining Wear Using Carbon-Ceramic Brake Wear Tester: Vas6813 >> Checking With Carbon-Ceramic Brake Wear Tester: Vas6813 >> Notes

Checking With Carbon-Ceramic Brake Wear Tester: Vas6813: Notes

NOTE:

The Check Occurs By Determining The Brake Rotor Thickness "And" The Wear Value With The :VAS6813  , Both Must Be Measured Three Times Respectively Around The Circumference.

The Wear Value -C- For The :VAS6813  Is Engraved On The Brake Rotor Cup.

Fig 1: Wear Indicator A Through D
GWWA00-11145Courtesy of AUDI OF AMERICA, LLC

The Values -A And C- Can Be Different Depending On The Location.

The Values -A And C- Can Be Different Depending On The Brake Rotor.

Value -A- Is A Value From The Production Of The New Brake Rotor

Special Tools And Workshop Equipment Required 

Carbon-Ceramic Brake Wear Tester:VAS6813  :

NOTE:

For Additional Information On The :VAS6813  Refer To The Supplied Owner's Manual.

Measurement: 

WARNING:

Health Risk.

  • Always Wear A Mouth And Nose Mask When Using Compressed Air To Clean The Ceramic Brake Rotor.
  • Never Clean The Brake Rotor With Water Or Any Other Fluid.

At A Distance Of 120° The Marks For The Measurement For Deterring The Wear Can Be Found

The Following Described Measurement Must Take Place On All Three Measurement Locations To Guarantee A Correct Check.

-A- New Value, -C- Wear Value, -B- Number Of The Measurement Location, -D- Mark For The Laser Beam For The Measurement Of The Wear Value.

Fig 3: Wear Indicator A Through D
GWWA00-11145Courtesy of AUDI OF AMERICA, LLC

For Example The Third Measurement Location -B- From "1 To 3" Can Be Seen.

NOTE:

The Values -A And C- Are Different Depending On The Location.

The Values -A And C- Are Different Depending On The Brake Rotor.

-- Place The :VAS6813  Flush On The Outer Edge Of The Brake Rotor.

-- Switch On The :VAS6813  .

-- Move The :VAS6813  -1- Along The Outer Edge -2- Until The Laser Beam Points Exactly On The Mark -D- On The Brake Rotor.

Fig 4: No Content
GWWA00-11146Courtesy of AUDI OF AMERICA, LLC

-- Determine The Wear On All Three Measurement Locations Of The Brake Rotor From "1 To 3".

-- Read The Displayed Value On The :VAS6813 

If One Of The Three Wear Values -C- Is Reached Or Falls Short, The Brake Rotor Must Be Removed For Further Checking.

Fig 5: Wear Indicator A Through D
GWWA00-11145Courtesy of AUDI OF AMERICA, LLC
NOTE:

The Wear Value -C- Is Different Depending On The Measurement Location.