The Stovebolt Site Forums The Parking Lot Big Bolts GMC 450 seized brakes.

When I bought the truck the right rear brake was tight, now it has seized. Any tips on how to free it up so I can remove the drum?

I will be replacing all the brake lines and possibly some of the cylinders. I have seen the part #s on the GMC 550 post, are those parts listed available in Canada?

Hy Greengrass, Lordco has some of those parts in stock, and could probably get what they don't already have in stock, hope that helps.

Thanks Bobb, next time I'm at Lordco I'll ask them. I did get all my 347 V8 ignition parts from Lordco, they had most parts in stock and only needed to order the dist. cap.

Sometimes you can remove the axle and then take the outer bearing out, then you can get enough movement to get the drum and hub off.

Thanks Don, I'll give that a try.

Have you tried to back the "Star adjuster" to the "Max".? We did this on the Viking 60 bus,and with a little coaxing from a 10# sledge,we got them off. The hub formed a ridge around the outer circumference,and we had to clear that ridge. Hope this helps.

On the 59 Chevy 10400 that I had, I had to do the same thing on both rear drums. Jacked it up, pulled the wheels, removed the axles and outer bearings. Then, I took some 1/2" socket extensions and worked them into the opposite axle. Once seated against the axle, I had a crowsfoot puller (the kind you use to pull a harmonic balancer) that just fit into the bolt pattern of the drum and cranked it up hard, used a big hammer and after a bit, they finally walked off. Fun job.

Thanks WetWilly and Mr. Olds88, I will try all these things. My truck has Daytons and I was hoping to free up the brakes without removing the wheels but I think that will be the only solution.