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Check Thickness And Condition Of Brake Disks - AR42.10-P-0120MFB

Model 243, 247 

G16166925Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
CAUTION Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.		 AS00.00-Z-0017-01A
Notice  Notes on handling, transport and storage of composite brake disks   AH42.10-P-9406-12LF 
  Notes on safety-relevant components   AH00.00-Z-0019-01A
REMOVING Remove     
1 Remove wheel and tire assemblies.   AR40.10-P-1102MFA
MEASURING Measure     
2 Measure thickness of brake disks (1) on front and rear axles with vernier caliper. HAND-HELD TESTER Model 243
Model 247.002/003/013/082/084
with code 950
Model 247.002/003/084
except code 950/U29 Model 247.002/013/014/015/044/045/046/047/082/086/610/612/613/615/646/647/651/684/687/712/713/714/715/746/747/751/784/787
with code 950/U29
Model 247.003/012/084/087/753/754
with code U29
Model 247.012/087
except code U29
Model 247.014/015/044/045/046/047/086/610/612/613/615/646/647/684/687/712/713/714/715/746/747/787
except code 950/U29
Model 247.651/751
except code U29
Model 247.753/754
except code U29/U70
Model 247.753/754
With code U70
Model 247.784
except code U29/950/B01
Model 247.784
with code B01
Brake disk thickness		 *BE42.10-P-1001-08FA 
    HAND-HELD TESTER Model 243
Model 247.002/003/012/082/084/651/751/753/754
with code U29
Model 247.002/003/012/082/084
except code U29
Model 247.013/014/015/044/045/046/047/086/610/612/613/615/644/646/647/684/687/712/713/714/715/746/747/784/787
Model 247.087
except CODE B01
Model 247.087
with code B01
Model 247.651/751/753/754
except code U29
Brake disk thickness		 *BE42.10-P-1001-09DA 
    SPECIAL TOOL Caliper gauge
If the wear limit has been exceeded or will be exceeded before the next brakepad change.
↓
Replace brake disks (1).		 Fig 1
      AR42.10-P-0220MFA 
INSPECT Check     
3 Check brake disks (1) on front and rear axle for corrosion, score marks, cracks and chippings. IMPORTANT For perforated brake disks or those provided with sunk holes (1) assess the crack length (x) including the bore diameter.
HAND-HELD TESTER Model 243
Model 247.002/003/013/082/084
with code 950
Model 247.002/003/084
except code 950/U29
Model 247.002/013/014/015/044/045/046/047/082/086/610/612/613/615/646/647/651/684/687/712/713/714/715/746/747/751/784/787
with code 950/U29
Model 247.003/012/084/087/753/754
with code U29
Model 247.012/087
except code U29
Model 247.014/015/044/045/046/047/086/610/612/613/615/646/647/684/687/712/713/714/715/746/747/787
except code 950/U29
Model 247.651/751
except code U29
Model 247.753/754
except code U29/U70
Model 247.753/754
With code U70
Model 247.784
except code U29/950/B01
Model 247.784
with code B01
Check brake disks		 *BE42.10-P-1002-08FA 
    HAND-HELD TESTER Model 243
Model 247.002/003/012/082/084/651/751/753/754
with code U29
Model 247.002/003/012/082/084
except code U29
Model 247.013/014/015/044/045/046/047/086/610/612/613/615/644/646/647/684/687/712/713/714/715/746/747/784/787
Model 247.087
except CODE B01
Model 247.087
with code B01
Model 247.651/751/753/754
except code U29
Check brake disks
If problems exist,
↓
Replace brake disks (1).		 *BE42.10-P-1002-09DA 
      AR42.10-P-0220MFA 
INSTALLING Install     
4 Install wheel and tire assemblies.   AR40.10-P-1102MFA
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 243 Model 247.753/754 With code U70
BE42.10-P-1001-08FA Brake disk thickness New mm 30 36
Wear limit mm 27, 4 34
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.002/003/084 except code 950/U29 Model 247.002/003/013/082/084 with code 950 Model 247.012/087 except code U29 Model 247.784 except code U29/950/B01
BE42.10-P-1001-08FA Brake disk thickness New mm 24 28
Wear limit mm 21, 4 25, 4
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.002/013/014/015/044/045/046/047/082/086/610/612/613/615/646/647/651/684/687/712/713/714/715/746/747/751/784/787 with code 950/U29 Model 247.003/012/084/087/753/754 with code U29 Model 247.014/015/044/045/046/047/086/610/612/613/615/646/647/684/687/712/713/714/715/746/747/787 except code 950/U29 Model 247.784 with code B01
BE42.10-P-1001-08FA Brake disk thickness New mm 30 30
Wear limit mm 28 27, 4
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.651/751 except code U29 Model 247.753/754 except code U29/U70
BE42.10-P-1001-08FA Brake disk thickness New mm 32
Wear limit mm 30
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 243 Model 247.002/003/012/082/084 except code U29 Model 247.087 with code B01
BE42.10-P-1001-09DA Brake disk thickness New mm 12 11
Wear limit mm 10, 3 9, 3
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 247.002/003/012/082/084/651/751/753/754 with code U29 Model 247.013/014/015/044/045/046/047/086/610/612/613/615/644/646/647/684/687/712/713/714/715/746/747/784/787 Model 247.087 except CODE B01 Model 247.651/751/753/754 except code U29
BE42.10-P-1001-09DA Brake disk thickness New mm 12 22
Wear limit mm 10, 3 20
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 243 Model 247.753/754 With code U70
BE42.10-P-1002-08FA Check brake disks Crack length Dimension "x" mm < 25 < 25
Crack depth mm < 0, 5 < 0, 5
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.002/003/084 except code 950/U29 Model 247.002/003/013/082/084 with code 950 Model 247.012/087 except code U29 Model 247.784 except code U29/950/B01
BE42.10-P-1002-08FA Check brake disks Crack length Dimension "x" mm < 25 < 25
Crack depth mm < 0, 5 < 0, 5
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.002/013/014/015/044/045/046/047/082/086/610/612/613/615/646/647/651/684/687/712/713/714/715/746/747/751/784/787 with code 950/U29 Model 247.003/012/084/087/753/754 with code U29 Model 247.014/015/044/045/046/047/086/610/612/613/615/646/647/684/687/712/713/714/715/746/747/787 except code 950/U29 Model 247.784 with code B01
BE42.10-P-1002-08FA Check brake disks Crack length Dimension "x" mm < 25 < 25
Crack depth mm < 0, 5 < 0, 5
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 247.651/751 except code U29 Model 247.753/754 except code U29/U70
BE42.10-P-1002-08FA Check brake disks Crack length Dimension "x" mm < 25
Crack depth mm < 0, 5
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 243 Model 247.002/003/012/082/084 except code U29 Model 247.087 with code B01
BE42.10-P-1002-09DA Check brake disks Crack length Dimension "x" mm < 25 < 25
Crack depth mm < 0, 5 < 0, 5
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 247.002/003/012/082/084/651/751/753/754 with code U29 Model 247.013/014/015/044/045/046/047/086/610/612/613/615/644/646/647/684/687/712/713/714/715/746/747/784/787 Model 247.087 except CODE B01 Model 247.651/751/753/754 except code U29
BE42.10-P-1002-09DA Check brake disks Crack length Dimension "x" mm < 25 < 25
Crack depth mm < 0, 5 < 0, 5
Fig 1: Identifying Caliper Gauge (140 589 00 19 00)
G16166926Courtesy of MERCEDES-BENZ USA
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