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

MODEL 117, 156, 164, 166, 169, 171, 172, 176, 177, 190, 197, 203, 204, 205, 207, 209, 211, 212, 213, 216, 217, 218, 219, 221, 222, 230, 231, 238, 242, 245, 246, 251, 253, 257, 292, 453, 463 

G12083066Courtesy of MERCEDES-BENZ USA

Perforated compound brake disk with wear bores 

G12083067Courtesy of MERCEDES-BENZ USA

Compound brake disk with wear bores 

G12083068Courtesy of MERCEDES-BENZ USA
  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 composite brake disks Model 190, 205, 213, 217, 222, 238, 253, 257 AH42.10-P-9406-12LF
  Notes on handling, transport and storage of ceramic brake disks Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253
with code B07 (Ceramic brake system)
AH42.10-P-9406-13A
INSPECT Check     
1.1 Assess steel brake disks (1) for score marks, cracks, corrosion and soiling (e.g. oil, grease). Model 117, 156, 164, 166, 169, 171, 172, 176, 203, 204, 207, 209, 211, 219, 221, 230, 238, 242, 245, 246, 251, 253, 292, 453, 463
Model 190, 197.3/4, 205, 212, 213, 217, 218,
222, 231
except code B07 (Ceramic brake system)
Model 205
with code B07 (Ceramic brake system) and steel brake disks on the rear axle
NOTES
For perforated or counterbored steel brake disks (1) assess the crack length (x) including the bore diameter.
Otherwise the assessment may be incorrect. If a crack length (x) is ≥ 25 mm (0.98 inches) split open cracks or score marks are deeper than 0.5 mm (0.02 inches), or severe corrosion is present.

Replace steel brake disks (1).
IMPORTANT After obtaining special order.
If soiling (e.g. oil, grease) is present.

Clean steel brake disks (1), and replace if necessary.
IMPORTANT After obtaining special order.
 
1.2 Assess ceramic brake disks (2) for damage and soiling (e.g. oil, grease).
Notes on evaluating brake disks
Model 190, 197, 205, 212, 213, 217, 218, 222, 231, 253
with code B07 (Ceramic brake system)
If the ceramic brake disks (2) are damaged or soiled.

Replace ceramic brake disks (2).
IMPORTANT After obtaining special order.
AH42.10-P-9406-07RQ
REFER TO TESTING & REPAIR   If, in exceptional cases, assessment of the ceramic brake disks (2) is not possible by means of a visual check.

Check ceramic brake disks (2) for condition.
Model 190, 205
with code B07 (Ceramic brake system)
AP42.10-P-4258AC
    Model 197, 212, 218, 231
with code B07 (Ceramic brake system)
AP42.10-P-4258QQ
    Model 213, 253 AR42.10-P-0120LWG
    Model 217
with code B07 (Ceramic brake system)
AP42.10-P-4258CC
    Model 222
with code B07 (Ceramic brake system)
IMPORTANT After obtaining special order.
AP42.10-P-4258HC
2.1 Assess steel brake disks (1) for wear.
Notes on evaluating brake disks with and without wear holes
Model 117, 156, 164, 166, 169, 171, 172, 176, 177, 203, 204, 207, 209, 211, 216, 219, 221, 230, 238, 242, 245, 246, 251, 257, 292, 453, 463
Model 190, 197.3/4, 205, 212, 213, 217, 218, 222, 231, 253
except code B07 (Ceramic brake system)
Model 205
with code B07 (Ceramic brake system) and steel brake disks on the rear axle
Steel brake disks (1) with wear bores.
If outer wear bore (11), center wear bore (12) and the inner wear bore (13) are visible.

The steel brake disks (1) are OK; new brakepads can still be installed on the disks.
If the inner wear bore (13) is visible.

The steel brake disks (1) are OK. The current brakepads can continue to be used. New brakepads may no longer be installed on the steel brake disks (1).
If none of the three wear bores are visible.

Replace steel brake disks (1).
IMPORTANT After obtaining special order.
If, in exceptional cases, assessment of the steel brake disks (1) is not possible by means of a visual check.

Check steel brake disks (1) for condition.
AH42.10-P-9406-14A 
    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
Model 245 (except 245.286)
AP42.10-P-4258AK
    Model 171, 172 AP42.10-P-4258V
    Model 176 AP42.10-P-4258NM
    Model 190
except code B07 (Ceramic brake system)
AP42.10-P-4258A
    Model 197.3/4
except code B07 (Ceramic brake system)
AP42.10-P-4258RQ
    Model 203 AP42.10-P-4258BP
    Model 204 AP42.10-P-4258CW
    Model 205
except code B07 (Ceramic brake system)
Model 207
Model 212
except code B07 (Ceramic brake system)
Model 218
except code B07 (Ceramic brake system)
AP42.10-P-4258EW
    Model 209 AP42.10-P-4258BQ
    Model 211 AP42.10-P-4258R
    Model 230  
REFER TO TESTING & REPAIR   Model 213, 253 AR42.10-P-0120LWG
    Model 216
Model 221.0/1
AP42.10-P-4258SX
    Model 217
except code B07 (Ceramic brake system)
AP42.10-P-4258C
    Model 219 AP42.10-P-4258TX
    Model 222
except code B07 (Ceramic brake system)
AP42.10-P-4258HA
    Model 231
except code B07 (Ceramic brake system)
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 257 AR42.10-P-0120FR
    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
IMPORTANT After obtaining special order.
AP42.10-P-4258G
2.2 Assess steel brake disks (1) for wear. Model 117, 156, 164, 166, 169, 171, 172, 176, 177, 203, 204, 207, 209, 211, 216, 219, 221, 230, 238, 242, 245, 246, 251, 257, 292, 453, 463
Model 190, 197.3/4, 205, 212, 213, 217, 218, 222, 231, 253
except code B07 (Ceramic brake system)
Model 205
with code B07 (Ceramic brake system) and steel brake disks on the rear axle
Steel brake disks (1) without wear bores.
 
  Notes on evaluating brake disks with and without wear holes If deeply contoured ridging is present at the outer edge.

Replace steel brake disks (1).
IMPORTANT After obtaining special order.
If, in exceptional cases, assessment of the
steel brake disks (1) is not possible by means
of a visual check.

Check steel brake disks (1) for condition.
AH42.10-P-9406-14A 
    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
except code B07 (Ceramic brake system)
AP42.10-P-4258A
    Model 197.3/4
except code B07 (Ceramic brake system)
AP42.10-P-4258RQ
    Model 203 AP42.10-P-4258BP
    Model 204 AP42.10-P-4258CW
    Model 205
except code B07 (Ceramic brake system)
Model 207
Model 212
except code B07 (Ceramic brake system)
Model 218
except code B07 (Ceramic brake system)
AP42.10-P-4258EW
    Model 209 AP42.10-P-4258BQ
    Model 211, 230 AP42.10-P-4258R
REFER TO TESTING & REPAIR   Model 213, 253 AR42.10-P-0120LWG
    Model 216, 221.0/1 AP42.10-P-4258SX
    Model 217
except code B07 (Ceramic brake system)
AP42.10-P-4258C
    Model 219 AP42.10-P-4258TXM
    Model 222
except code B07 (Ceramic brake system)
AP42.10-P-4258HA
    Model 231
except code B07 (Ceramic brake system)
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 257 AR42.10-P-0120FR
IMPORTANT   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
IMPORTANT After obtaining special order.
AP42.10-P-4258G