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I had read a few thread about this and tried what was suggested with no luck. Just to recap, I removed the expansion ring clip and threaded a 6mm x 3" bolt into the center of the housing and bottomed it out on the shaft. Then I wrapped on the house with my rubber mallet and then began tightning the screw to pop the inner filter housing loose, but had no luck. In fact I think I stripped the treads trying to do this. I guess I will have to re-thread to 8mm and do something different. No I'm not trying to remove the whole housing, I know theirs a special nut holding it onto the gear shaft.
Are there any other suggestions for removing the filter housing?
I don't believe you bottom the bolt out. Just thread it in to get a grip and then pull. The only thing holding that cap in is an o-ring.
I just did this on a 350 today.
Heading corrected, i have moments like that with words i rarely use.
Well I did bottom the bolt out and stripped the threads on the cap. And the cap didn't come out. However, I regrouped, drilled out the threads, threaded to 8mm x 1.25, bottomed that one out and had to use an adjustable wrench wedged behind the head of the bolt and while prying against the housing I tightened the bolt a little at a time to keep tension on the cap. It finally came loose. There was about a 1/4" of crap in there. Oh and did I mention this bikes been sitting since 81!
I sure did remove the clip. I was surprised too, since all the threads I read made it sound like it should just pop out of the housing. It didn't and the steel bolt stripped the aluminum threads. But the re-threading and the massaging that I did as stated previously worked nicely.
You would be better pouring boiling water on it so it expands.
I guess you must have an early one as the later ones had steel center.
I had completely forgotten about the all alloy ones, I thought they were discontinued by the time the CB350 came out as I've only ever seen them on CB72/77 and CB/CD175/CB160
I've always used one of the cover screws on the early type, the thread is very slightly different on 1965/66 models.
Could be someone broke original and replaced it with early type?
The boiling water might have worked had I not already stripped it out. I couldn't tell you if someone replaced this part with an older one at some point in time, very possible. I'm looking at installing an external oil cooller, filter, pump setup so I don't have to get into the case everytime I have to change the oil. I've come accross a couple of threads and seen a few pictures of bikes back in the day which had some external components for this function. (Possibly race setups.) But it will be a slow process.
Easiest way to do it is drill out the clutch cover blanking plugs and bypass the centrifugal filter completely
I think I have some pics in my 'build/blog' but bike was finished around 3.5~4 yrs so I haven't checked in a while
Link is in sig
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