Drum Brake Rear wheel brake cylinder dimensions (drum brake):
|
Model |
Nominal diameter |
Max. perm. cylinder bore diameter |
Min. perm. piston diameter |
|
|
in mm |
in mm |
in mm |
|
Saloon (up to MY '94) |
17,46 |
17,53 |
17,39 |
|
Estate and Saloon (as of MY '94) |
19,05 |
19,12 |
18,98 |
Drum Brakes (Continued) Rear drum brake dimensions:
|
Model or engine version |
Inner diameter and width of brake drum |
Max. perm. inner diameter after precision turning |
Perm. lateral runout |
Grinding radius for brake pad when using a grinding machine |
Brake lining wear |
|
|
in mm |
in mm |
in mm |
in mm |
in mm |
|
Saloon: 14 NV, C 14 NZ, 14 SE up to MY '96, C 14 SE up to MY '96, C 16 NZ, X 16 SZ up to MY '96, 17 D, 17 DR |
200 x 28 |
201 |
0.1 (on mounting in fitting bore on brake drum floor) |
around 0.2 smaller
adjust, as measured drum radius |
2.5 (without lining support bracket) |
Drum Brakes (Continued) Rear drum brake dimensions:
|
Model or engine version |
Inner diameter and width of brake drum |
Max. perm. inner diameter after precision turning |
Perm. lateral runout |
Grinding radius for brake pad when using a grinding machine |
Brake lining wear |
|
|
in mm |
in mm |
in mm |
in mm |
in mm |
|
14 SE as of MJ '96, C 14 SE as of MY '96, X 14 XE, X 16 SZ as of MY '96, 16 NZR, X 16 SZR, C 16 SE, X 16 XEL, X 17 DT, X 17 DTL, C 18 NZ, 16 LZ2, C 18 XE, C 18 XEL, C 18 SEL, C 20 NE |
200 x 45 |
201 |
0.1 (on mounting in fitting bore on brake drum floor) |
around 0.2 smaller
adjust, as measured drum radius |
2.5 (without lining support bracket) |
Drum Brakes (Continued) Rear drum brake dimensions:
|
Model or engine version |
Inner diameter and width of brake drum |
Max. perm. inner diameter after precision turning |
Perm. lateral runout |
Grinding radius for brake lining when using grinding machine |
Brake lining wear |
|
|
in mm |
in mm |
in mm |
in mm |
in mm |
|
Estate up to MY '96: 14 NV, C 14 NZ, C 14 SE, C 16 NZ, X 16 XEL, 17 D, 17 DR, 17 DT, X 17 DT, X 17 DTL, 16 LZ2, C 18 NZ, C 18 XE, C 18 XEL, C 20 NE |
200 x 45 |
201 |
0.1 (on mounting in fitting bore on brake drum floor) |
around 0.2 smaller
adjust, as measured drum radius |
2.5 (without lining support bracket) |
Drum Brakes (Continued) Rear drum brake dimensions:
|
Model or engine version |
Inner diameter and width of brake drum |
Highest permitted internal diameter in accordance with precision turning |
Brake lining wear |
|
|
in mm |
|
in mm |
|
Estate as of MY '96: C 14 NZ, 14 SE, C 14 SE, C 16 SE, X 16 SZ, X 16 SZR, X 17 DT, X 17 DTL, 16 LZ2, X16 XEL, C 18 SEL, C 18 XE, C 18 XEL |
230 x 40 |
Turning the brake drum is not possible, as no adhesion type brake shoes with over dimensions are available. |
1.0 (without lining support bracket) |
Drum Brakes (Continued) Data on precision turning :
|
|
|
|
Speed |
40 to 50 min -1 (rpm) |
|
Forward feed |
0.08 to 0.1 mm/rev |
|
Depth of cut |
0.3 mm max. |
|
Radius of steel tip |
approx. 1.6 mm |
|
|
To achieve uniform braking behaviour, both brake drums must have the same diameter and surface characteristics. For this reason, always work on both. When unscrewing, make sure that no screw-formed striations occur. |
|
