GM Corvette 1963-1982 Repair Guide

General Information


See Figure 1

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Fig. Fig. 1: Exploded view of the drum brake components (with the brake drum removed)

Maintenance procedures for the metallic lining-only option are the same as those for standard brakes. Do not substitute these linings in standard drums, unless they have been honed to a 20 micro-inch finish and equipped with the special heat resistant springs.

The oversize metallic lining and finned drum option requires attention to the following maintenance deviations: The adjusting screw uses a solid film lubricant, and should not be cleaned with solvent or lubricated. The final brake adjustment also differs for this option in that the self-adjustment feature actuates when firm pedal application is made when the car is moving forward. Maintenance procedures require these linings to be broken in. Make an initial adjustment then use moderate pedal pressure to make six to eight stops from approximately 30 mph. Follow this with six to eight stops from approximately 60 mph; making each stop at a one-mile interval.