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Assess Condition Of Brake Disks - AP42.10-P-4256EW

MODEL 117, 156, 164, 166, 169, 171, 172, 176, 190, 197, 203, 204, 205, 207, 209, 211, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 238, 242, 245, 246, 251, 253, 292, 453, 463 

Shown with complete wheels removed 

G11974648
  Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. AS00.00-Z-0010-01A
  Notes on handling, transport and storage of ceramic brake disks with code B07 (ceramic brake system) AH42.10-P-9406-13A
  Notes on handling, transport and storage of composite brake disks Model 190, 205, 213, 217, 222, 238, 253 AH42.10-P-9406-12LF
INSPECT Check     
1.1 Check all steel brake disks (1) for score marks, cracks, corrosion, ridging on outer edge and for soiling (oil, grease) Except code B07 (Ceramic brake system), Model 205 with code B07 (Ceramic brake system) on rear axle only
IMPORTANT For perforated or counterbored steel brake disks (1) assess the crack length (x) including the bore diameter.
For a crack length (x) ≥ 25 mm (0.98 inches), gaping cracks or score marks deeper than 0.5 mm (0.02 inches) or pitted corrosion or deeply contoured ridging at the outer edge

Replace steel brake disks (1) subject to separate repair order.
 
SPECIAL TOOL Caliper gauge
In event of soiling (oil, grease)

Clean steel brake disks (1), subject to separate repair order, replace if necessary.
If, in exceptional cases, assessment of the steel brake disks (1) by means of visual inspection is not possible.

Check condition of steel brake disks (1) subject to separate repair order.
Fig 1
Model 117 AP42.10-P-4258NK
Model 156 AP42.10-P-4258NL
Model 164, 251 AP42.10-P-4258GZ
Model 166 AP42.10-P-4258GQ
Model 169, 245 (except 245.286) AP42.10-P-4258AK
Model 171, 172 AP42.10-P-4258V
Model 176 AP42.10-P-4258NM
Model 190 AP42.10-P-4258A
Model 197.3/4 AP42.10-P-4258RQ
Model 203 AP42.10-P-4258BP
Model 204 AP42.10-P-4258CW
Model 205, 207, 212, 218 AP42.10-P-4258EW
Model 209 AP42.10-P-4258BQ
REFER TO TESTING & REPAIR Model 211, 230 AP42.10-P-4258R
Model 213, 253 AR42.10-P-0120LWG
Model 216, 221.0/1 AP42.10-P-4258SX
Model 217 AP42.10-P-4258C
Model 219 AP42.10-P-4258TX
Model 222 AP42.10-P-4258HA
Model 231 AP42.10-P-4258RK
REFER TO TESTING & REPAIR Model 238 AR42.10-P-0120LWO
Model 242 AP42.10-P-4258NP
Model 246 AP42.10-P-4258NR
REFER TO TESTING & REPAIR Model 292 AR42.10-P-0120A
Model 453 AP42.10-P-4258S
Model 463.202/236/237/346
as of model year 2012
Model 463.272/273/274
AP42.10-P-4258G
1.2 Check all ceramic brake disks (2) for damage and soiling (oil, grease) With code B07 (Ceramic brake system), model 205 with code B07 (Ceramic brake system) on front axle only  
Notes on evaluating brake disks AH42.10-P-9406-07RQ
NOTES
Replace damaged or soiled ceramic brake disks (2), subject to separate repair order. Otherwise the brake system may fail.
If, in exceptional cases, assessment of the ceramic brake disks (2) by means of visual inspection is not possible.

Check condition of ceramic brake disks (2) subject to separate repair order.
 
Model 190, model 205 front axle AP42.10-P-4258AC
Model 197, 212, 218, 231 AP42.10-P-4258QQ
REFER TO TESTING & REPAIR Model 213 AR42.10-P-0120LWG
Model 217 AP42.10-P-4258CC
Model 222 AP42.10-P-4258HC
Fig 1: Identifying Caliper Gauge (140 589 00 19 00)
G11974649Courtesy of MERCEDES-BENZ USA