Clutch construction — fastening of friction facings Clutch facings (friction linings) are commonly attached to the clutch plate by which fasteners?

Introduction / Context:
Clutch plates employ friction facings that must be secured without damaging mating surfaces. The choice of fastener material influences wear of the flywheel and pressure plate and the serviceability of the assembly.

Given Data / Assumptions:

• Organic or sintered facings riveted to a steel core plate.
• Service conditions: high temperature, vibration, and repeated engagement.
• Compatibility with cast iron or steel mating surfaces is important.

Concept / Approach:
Soft non-ferrous rivets (brass or copper) are preferred because, in the event of wear-through, they are less likely to gouge the flywheel or pressure plate compared to hard steel rivets. They also ease riveting and reduce the risk of cracking the facing material.

Step-by-Step Solution:
Identify requirement: secure facings with minimal damage risk.Evaluate options: brass rivets are soft and sacrificial; steel rivets are too hard; screws are uncommon on friction facings.Select brass rivets as the standard practice.

Verification / Alternative check:
OEM and aftermarket clutch specifications frequently list copper/brass rivets; performance clutches may use different retention but rivets remain common.

Why Other Options Are Wrong:
Steel rivets/screws can score mating surfaces if exposed.

Aluminium screws lack strength at temperature.

Adhesive-only designs are rare in high-temperature automotive clutches.

Common Pitfalls:
Incorrect rivet length or setting pressure can loosen facings; always follow torque and staking procedures.

Final Answer:
brass rivets