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Old 05-13-2008, 07:01 PM   #11 (permalink)
akimball442
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Date registered: Nov 2007
Vehicle: '73 450SL, '78 300CD, '88 300SE, '84 Olds 98, '81 Cadillac Coupe Deville
Location: Upstate NY
Posts: 272
The calipers on my 123 are SHOT. I have the bendix type. I also have the rebuild kits sitting on the table in front of me. Bad calipers could cause one side to drag, that is what's wrong with mine. The driver front (most likely to have trouble, shortest line) has the outside piston stuck. It wont move in or out. I'm going to have a fun time freeing it up.

I have to get my 126 on the road so I can spend some time taking them apart and overhauling them. It's not really a major job, but it's tricky on this particular type, because you're going to need to keep one piston in while you get the other out. You'll need to find a clamp that will allow that, and keep your fingers out of it when you hit them with compressed air. I read the instructions on the manual CDs, the only thing I'm worried about is that it says the pistons have to be in basically perfect condition. They are supposedly chrome plated. I'm thinking if you carefully buff them that would be good enough, but you dont want to use anything too abrasive or it'll corrode fast and you'll be stuck in the same situation.

Remember. Moisture + heat = instant rust.

I'm giving it a shot anyway, for $15 and a few hours, it's worth it, but i have a funny feeling I'll end up replacing the calipers.

Aaron-
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