Walther EMC Brake Drum and Rotor Replacement Guidelines

About this manual

The document details the conditions under which a brake drum or rotor should be replaced. Key indicators include reaching maximum diameter limits, falling below minimum thickness, presence of martensite formation, scoring that cannot be machined out, cracks, or heavy heat checking. Walther EMC explicitly advises against turning, resurfacing, or machining these components.

What's inside

• Replacement Conditions
• Martensite Formation
• Scored Surfaces
• Cracks and Heat Checking
• Hub/Rotor Assembly Fasteners
• Torque Requirements

Frequently asked questions

When should a brake drum be replaced?

A brake drum should be replaced when the surface diameter reaches the maximum allowed diameter cast on its outboard region.

When should a rotor be replaced?

A rotor should be replaced when the brake surface width dimension is less than or equal to the minimum allowed thickness cast or stamped on it.

Can Walther EMC brake drums and rotors be resurfaced?

No, Walther EMC does not recommend turning, resurfacing, or machining brake drums or rotors.

What fasteners are used for Walther EMC hub and rotor assemblies?

These assemblies use Grade 8 hex bolts or Grade 8 flanged hex bolts.