[Donttellmywife]

Good morning all - before I lose my mind and/or inflict irreparable damage, hopefully you guys can provide some input. I have begun stripping my 1975 CB400F and preparing for powdercoating. I got to the swingarm and the front pivot bushings, and it appears there are 2 bushings stacked on top of one another. Please see attached picture.
The manual shows only 1 and I cannot find anywhere talking about double bushings. The outermost one is some type of compacted fiber (hopefully not asbestos) as it will chip out with enough force. Attempting to drive them out from the opposite side - there is a “lip” but the problem is because it’s fiber it just eventually gives way to whatever I’m using to drive it. I have been carefully chiseling out the fiber on the inside. I haven’t chipped away enough yet, but so far there doesn’t seem to be a second “lip” for the second innermost metal bushing; in which case how the heck do I get it out? I’m thinking heat + substantial vice grip power...

Thanks all

 

[Alan F.]

Have a look at this:

https://www.partzilla.com/catalog/honda/motorcycle/models-with-no-year/cb400f-a/swingarm-chainguard

#10 is the swingarm collar, a precision made tubular shaft, it has areas at the outer diameter on both ends that pivot against the swingarm pivot bushings #8.

#14 the swingarm pivot bolt slides inside #10 the swingarm collar and when assembled, #27 the grease nipple is used to fill the whole assembly with clean grease through a series of holes in the collar.

The stock bushings were some type of plastic, slide the swingarm collar out without damaging it (perhaps adding some new grease through the grease nipple will help, maybe gentle heat but not flame) Then clean the inside of the pivot out with brake cleaner or some other degreasing spray so you can see the plastic bushings at each end inside the swingarm pivot, they're not long bushings. With a new, sharp hacksaw blade score the bushings a few times, blow or vacuum the dust out and have a look. You want to saw through the plastic bushing, but not the steel around it. Once you've completed your one cut on each bushing you will be able to push them both out one end of the swingarm pivot with relative ease. New bushings can be purchased in bronze from several sources. i hear this guy has quality swingarm bushings: https://m.ebay.com/itm/Honda-CB-250-360-400-500-550-750-Four-swingarm-bronze-bushing-set-bearing-new-/282075118558?ul_ref=http%3A%2F%2Frover.ebay.com%2Frover%2F1%2F711-53200-19255-0%2F1%3Ftype%3D3%26campId%3D5336904847%26toolId%3D10001%26customId%3Djml4jw6hia001hye00axe%26mpre%3Dhttp%253A%252F%252Fm.ebay.com%252Fitm%252FHonda-CB-250-360-400-500-550-750-Four-swingarm-bronze-bushing-set-bearing-new-%252F282075118558%253FtxnId%253D1623347940018%26srcrot%3D711-53200-19255-0%26rvr_id%3D1683788249748%26rvr_ts%3D1d0e44ab1660aa666547cbc7fffdaa19&_mwBanner=1&_rdt=1&ul_noapp=true

Cheers.

If you're not a member at SOHC/4, you should join.

 

[Alan F.]

I think I found your answer while looking at swingarm bushings for another thread.
https://www.partzilla.com/catalog/honda/motorcycle/models-with-no-year/cb450k2-a/rear-fender-swingarm

Notice #11 and#14, 11 is the thrust bushing, 14 is a felt washer. Could that be what you're looking at?