Torque Values

Tightening torques for brake mechanics














Brake disc diameter,front 410 mm
Brake disc diameter,rear 370 mm

Brake disc thickness, front 38 mm
Brake disc thickness, rear 30 mm

Thickness tolerance of brake disc, max. 0.01 mm

Effective brake disc diameter, front 342 mm

Effective brake disc diameter, rear 314 mm

Brake disc thickness, front New
Basic Value 38 mm
Tolerance 1 +0.1 mm
Tolerance 2 -0.1 mm

Brake disc thickness, rear New
Basic Value 30 mm
Tolerance 1 +0.1 mm
Tolerance 2 -0.1 mm

Brake disc wear dimension, front 37.7 mm
Brake disc wear dimension, rear 29.7 mm

Brake disc wear limit, front
Minimum brake disc thickness (wear limit) is stamped on the brake-disc chamber. Example: Min. Th. 37.7 mm
Measured value mm (Read value on brake disc chamber) XX.X

Brake disc wear limit, rear
Minimum brake disc thickness (wear limit) is stamped on the brake-disc chamber. Example: Min. Th. 29.7 mm
Measured value mm (Read value on brake disc chamber) XX.X

Wear limit: Surface changes in front and rear brake discs
Wear limit: Connected surface fracture ] 1 cm� and/or surface roughness of brake disc ] 80 micrometer. Replace PCCB brake discs on each axle.
Surface changes Values and procedure for: checking front 46 51 02 PCCB brake discs/checking rear 46 54 02 PCCB brake discs.

Lateral runout of brake disc, max 0.03 mm

Lateral runout of brake disc when installed, max. 0.07 mm

Technical data - PCCB brake system
Brake disc diameter, front 410 mm
Brake disc diameter, rear 370 mm

Brake disc thickness, front 38 mm
Brake disc thickness, rear 30 mm
Thickness tolerance of brake disc, max. 0.01 mm
Effective brake disc diameter, front 342 mm
Effective brake disc diameter, rear 314 mm

Brake disc thickness, front New
Basic Value 38 mm
Tolerance 1 +0.1 mm
Tolerance 2 -0.1 mm

Brake disc thickness, rear New
Basic Value 30 mm
Tolerance 1 +0.1 mm
Tolerance 2 -0.1 mm

Brake disc wear dimension, front 37.7 mm
Brake disc wear dimension, rear 29.7 mm

Brake disc wear limit, front
Minimum brake disc thickness (wear limit) is stamped on the brake disc chamber. Example: Min. Th. 37.7 mm
Measured value mm (Read value on brake disc chamber) XX.X

Brake disc wear limit, rear
Minimum brake disc thickness (wear limit) is stamped on the brake disc chamber. Example: Min. Th. 29.7 mm
Measured value mm (Read value on brake disc chamber) XX.X

Peak-to-valley surface roughness of brake disc New 0.006 mm

Wear limit: Surface changes in front and rear brake discs
Wear limit: Connected surface fracture ] 1 cm� and/or surface roughness of brake disc ] 80 micrometer. Replace PCCB brake discs on each axle.
Surface changes Values and procedure for: checking front 46 51 02 PCCB brake discs/checking rear 46 54 02 PCCB brake discs.

Lateral runout of brake disc, max. 0.03 mm
Lateral runout of brake disc when installed, max. 0.07 mm