Posted by Janicholson on July 31, 2019 at 18:55:34 from (24.240.46.228):
In Reply to: Super H brakes posted by yeld on July 31, 2019 at 18:34:10:
Long bolts don't heat affect very well, so getting them red may not do it. I think I would use a Oxy/acetylene cutting torch to blow the heads off. once off, you can remove the housing. With the housing off, you can heat them and cool them heat them and cool them about 4 times from red to cold. each time when still pretty hot, melt a candle on the bolt at the threads to get it to soak in. Then use a vice grip to back and forth them till they move. The brakes may need a new set of disks. If the disks look fat, do the following: With the housing supported on the bench on its back (where the little cap is located) so that it stays horizontal, put all the parts inside it in order, and centered. Now measure with a straight edge across the housing, from the edge of the housing on its now upper surface, down to the top of the friction disk. With new discs or old, the space should be between .030, and .045" if it is more, the housing needs to be machined to make that specification. The expander needs to have all its springs around the outside. It also needs its balls checked for roundness and polished. The ramps need to be smooth and have no dents or depressions in them. A spray of Dry lube like Triflow, is all they need to be fine. Use a 200 or 250 grit disk or other non directional process to out surface "sanding swirls on the metal of the expander, and the friction discs surfaces to break the glaze. Dry lube on the linkage pivots, and anti seize on the adjuster threads. Jim
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