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CRACKED BRAKE DRUMS ON ALUMINUM HUBS
Corrosion can form on aluminum hubs at the brake drum pilot. This will look like a
machined chamfer between the pilot diameter and the flange. This corrosion can crack
the replacement brake drum and lead to complete brake drum failure.
This corrosion MUST be completely removed prior to installing the replacement brake
drum. Remove this corrosion by chipping it with a tool, then clean with a wire brush.
Be careful not to damage the aluminum hub when removing the corrosion.
NOTE
: Although this information covers aluminum hubs, the same procedures should
be followed on all hubs when brake drums are being replaced.
Failure to completely remove the corrosion will prevent the replacement brake drum
from contacting the hub flange. When the wheel nuts are tightened, the brake drum
can crack. If the crack is not detected, the brake drum can fail.
Additional information on proper installation and maintenance of brake drums can be
found in our Installation and Maintenance Manual. Copies of this manual can be
obtained at no charge by contacting Webb.
OXIDE BUILD-UP
INCORRECT
STUD
HUB
BRAKE DRUM AND ROTOR SERVICE INFORMATION
TROUBLE-SHOOTING: CRACKED BRAKE DRUMS ON ALUMINUM HUBS