Topic: 1977 CB550F rear swing arm

[CrtJester]

I’m in the process of a complete nut and bolt restoration of a CB550F. I intend to powder coat the swing arm but there are two 2” long bushings pressed into the pivot tube which appear to be a hard black plastic and will not budge. Are they safe to 400 degrees for the powder coat?


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[calj737]

I doubt it. It’s easiest to press them out from the opposite side, or use a bushing puller. Picture an oblong shaped wafer, threaded rod in the middle. The oblong allows you to pivot the wafer within the ID, then rotate it to seat against the lip of the bushing. A thick washer outside the swing arm, thread a nut onto the rod. As you tighten the nut, the wafer pulls the bushing out.

Most people replace the stock plastic bushings with bronze bushing anyway, and if you opt to go that route, just use a Drexel and cut a slot in the plastic one, then knock it out.

[CrtJester]

I doubt it. It’s easiest to press them out from the opposite side, or use a bushing puller. Picture an oblong shaped wafer, threaded rod in the middle. The oblong allows you to pivot the wafer within the ID, then rotate it to seat against the lip of the bushing. A thick washer outside the swing arm, thread a nut onto the rod. As you tighten the nut, the wafer pulls the bushing out.

Most people replace the stock plastic bushings with bronze bushing anyway, and if you opt to go that route, just use a Drexel and cut a slot in the plastic one, then knock it out.

Thanks calj, I managed to get an ovaled washer behind the bushing and pressed them out and ordered bronze ones from vintagecb750


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