03-05-2017, 05:15 PM | #1 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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C-20 Front brakes.
I tried finding the info on these and read all my manuals and in the end it was a matter of just getting my hands dirty!
The manuals are very vag and have like 10 different brakes they mention and nothing pacific about any of them! FRONT BRAKES: Anyway here is what I found out. Taking a C-20 front brake hub off is just like taking a C-10 rotor off just a lot heavier! You start by jacking the truck up and placing jack stands under it. Then take the center hub nut cover off it has a hex on it so just use a big set of channel locks mine wasn't even tight. Then take the cotter key out of the castle nut and take the nut loose. I didn't take it all the way off just in case I had to hammer the drum off which I didn't! I then moved to the brake line. I took the rubber hose loose where it connects to the back side of the wheel cylinder and the hard line both. Much easier to take it off like this. Ok then pulled the hub assembly all off. Brake shoes springs everything I took off. Then took the 2-3/8 bolts loose that hold the wheel cyliner on the backing plate. It's a tight fit but it do able. I then took a part the wheel cylinders and cleaned them all up good. I took some sand paper to the inside real lightly just to make them shiny again. Did the same to both of the push pins and plugs inside the cylinders. I bought the rebuild kits and reinstalled everything. I cleaned all the backing plate off good and put some anti sieze on the raised spots on it for the brake shoes to slide better. Put everything back together and set the drag on the shoes with the star wheel so the hub assembly just does slide on.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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