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Old 06-16-2008, 03:17 PM   #4 (permalink)
Gregte
EcoModding Apprentice
 
Join Date: May 2008
Location: South Dakota
Posts: 117

GMC Sonoma - '94 GMC Sonoma
90 day: 36.97 mpg (US)
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Quote:
Originally Posted by ttoyoda View Post
My rear drums do not have any noticable drag. Certainly not to where I can detect it with the wheel on. Are you perhaps sensing the intertia of the wheel and thinking that is brake drag?
No, I am referring to actual drag of the shoes on the drum. That drag will be very minimal or even non existent just before the shoes have worn enough for the automatic adjusting mechanism to click a notch. but just after it does that there is often drag.

My experience with this is from my own vehicles and from thousands of vehicles I have serviced etc. (gas station work).

One solution to this problem would be to remove the automatic adjuster levers and then just adjust the brakes manually every so often but that does not appeal to me at all.

To keep disk brakes from dragging, a slight amount of lateral bearing play does the trick as this allows the wheel to wobble left to right forcing the calipers to spread the pads away from the rotor. But drum brakes are of course a completely different design.
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