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Home >> Mercedes Benz >> 2020 >> S450 Base >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brakes - Hydraulic & Mechanical System - 222 Chassis (3 Of 3) >> Maintenance >> Inspect Condition Of Brake Disks >> Inspect Condition Of Brake Disks - AP42.10-P-4258HA

Inspect Condition Of Brake Disks - AP42.10-P-4258HA

Model 222 

except code B07 (AMG - ceramic brake system) 

Shown on perforated compound brake disk 

G15359757Courtesy of MERCEDES-BENZ USA

Shown on perforated compound brake disk with wear holes 

G15359758Courtesy of MERCEDES-BENZ USA

Shown on compound brake disk with wear holes 

G15359759Courtesy 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
DANGER 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
Topical note  Notes on repairs to brake system   AH42.00-P-0003-01A
Topical note  Notes on handling, transport and storage of composite brake disks   AH42.10-P-9406-12LF
REMOVING Remove     
1 Detach complete wheels    
REFER TO TESTING & REPAIR     AR40.10-P-1102A
INSPECT Check     
2 Assess condition of brake disks (1)   AP42.10-P-4256EW 
    Assessment of brake disks (1) not OK
↓
Replace brake disks (1) subject to separate repair order.
 
MEASURING Measure     
3 Measure brake disk thickness on front axle using vernier caliper (010) Model 222 front axle Brake disk thickness *BE42.10-P-1001-08U 
    SPECIAL TOOL Caliper gauge
Observe recommended limit dimensions. If the wear limit has been exceeded or will be exceeded before the next brake lining change.
↓
Replace brake disks (1) subject to separate repair order.
Fig 1
4 Measure brake disk thickness on rear axle using vernier caliper (010) Model 222 rear axle Brake disk thickness *BE42.10-P-1001-09E 
    SPECIAL TOOL Caliper gauge
Observe recommended limit dimensions. If the wear limit has been exceeded or will be exceeded before the next brake lining change.
↓
Replace brake disks (1) subject to separate repair order.
Fig 1
INSTALLING Install     
5 Attach complete wheels    
REFER TO TESTING & REPAIR     AR40.10-P-1102A
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 222.004/032/033/057/104/123/132/133/15 0/155/157/162 except code 950/951 model 222.020/021/120/121 except code 950/951/U29 Model 222.004/032/033/05 7/104/123/132/133/1 50/155/157/162 with code 950/951 model 222.020/021/120/12 1 with code 950/951/U29 model 222.034/035/058/05 9/060/064/066/067/0 82/083/085/086/134/135/158/159/160/163/164/165/166/167/169/173/183/186/964/967/983/986 model 222.176/182/184/18 5/976/982/984/985 except code Z07/Z19
BE42.10-P-1001-08U Brake disk thickness New mm 32, 00 36, 00
Wear limit mm 30, 00 34, 00
CHECK VALUES FOR FRONT AXLE BRAKE DISKS

Number Designation Model 222.077/187 model 222.177/178/179/188 except code B07 model 222.980 except code 950/951/Z07 Model 222.176/182/184/18 5/976/980/982/984/9 85 with code Z07 model 222.176/182/184/18 5/976/982/984/985 with code Z19
BE42.10-P-1001-08U Brake disk thickness New mm 36, 00 36, 00
Wear limit mm 33, 00 33, 40
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 222.004/020/021/032/033/034/035/057/064/066/067/104/120/121/123/132/133/134/135/155/157/162/163/164/165/166/167/173/184/964/967 model 222.058/059/060/082/083/085/086/158/159/160/183/186/983/9 86 except code U28 model 222.150 except code 950/951 model 222.169 except code 950/951/U28 model 222.176/976 except code Z07 model 222.182/185 except code U28/Z07 Model 222.058/059/060/08 2/083/085/086/158/1 59/160/169/182/183/185/186/982/983/985/986 with code U28 model 222.077 model 222.177/178/179/187/188 except code B07 model 222.980 except code 950/951/Z07
BE42.10-P-1001-09E Brake disk thickness New mm 24 26
Wear limit mm 21, 4 24
CHECK VALUES FOR REAR AXLE BRAKE DISKS

Number Designation Model 222.150 with code 950/951 model 222.169 with code 950/951 except code U28 Model 222.176/182/185/97 6/980 with code Z07 Model 222.982/985 except code U28 Model 222.984
BE42.10-P-1001-09E Brake disk thickness New mm 24 26
Wear limit mm 22 23, 4
Fig 1: Identifying Caliper Gauge (140 589 00 19 00)
G13668688Courtesy of MERCEDES-BENZ USA