Notes on handling, transport and storage of composite brake disks - AH42.10-P-9406-12LF

WARNING: This page does not describe the selected car, but rather 199 other vehicles, including the 2020 Mercedes-Benz SLC300, 2020 Mercedes-Benz SL550, 2020 Mercedes-Benz SL450, 2020 Mercedes-Benz S65 AMG, and 2020 Mercedes-Benz GLA250. However, it is still accessible from the selected car via links, so may be relevant.

Model 190, 205, 217, 222, 253

Fig 1: Identifying Brake Plate And Steel Metal Casing

Courtesy of MERCEDES-BENZ USA

Body

Two-piece brake disk without fasteners, consisting of brake plate (1) and steel metal casing (2).

Corrosion protection

The steel metal casing (2) is galvanized with a zinc nickel coating.
The gearing area is painted with zinc dust.
The composite brake disk is also painted with zinc dust paint (exception: Hub contact surface).

Handling the composite brake disk

The composite brake disk must be corrosion free (dry storage etc.).
Damage to the paint and coating of the composite brake disk is not permitted.
Prevent brake disk from coming into contact with aggressive media (e.g. acids) (exception: Wheel cleaners approved by Mercedes-Benz).
The steel metal casing base (wheel and hub contact surface) as well as the corresponding contact components (wheel and hub) must be free of soiling and corrosion before assembly.
Axial forces must not be applied to the steel metal casing/brake ring circumference.
Lateral forces (parallel to rotational axis) must not be applied (e.g. fastening through safety screw only).
The composite brake disk may only be handled on the brake plate (1) and not the steel metal casing (2).
Composite brake disks may not be used any further after a shock, impact or after being dropped.
Do not detach steel metal casing (2) from brake plate (1).

Avoid any metallic impacts (risk of damaging corrosion protection)

Fig 2: Caution For Avoid Any Metallic Impacts (Risk Of Damaging Corrosion Protection)

Courtesy of MERCEDES-BENZ USA

Avoid any shocks, impacts to the brake plate (e.g. on mount carrier) or use of the mounted disk as a bearing/supporting surface (e.g. for steering knuckle)

Fig 3: Caution For Avoid Any Shocks, Impacts To Brake Plate (E.G. On Mount Carrier)

Courtesy of MERCEDES-BENZ USA

Avoid steering knuckle turning against steering resistance through composite brake disk pressure

Fig 4: Caution For Avoid Steering Knuckle Turning Against Steering Resistance Through Composite Brake Disk Pressure

Courtesy of MERCEDES-BENZ USA