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The mainshaft one is P/N 23931-323-004, so obviously a part first used in the CB500/4
Not the first part used with a number ending in 004
Quote from: Trigger on September 19, 2018, 04:07:29 PMNot the first part used with a number ending in 004 I think the K2 still used the -004 part Graham but question is did the manufacturer change the design?Any metallurgy gurus out there?
Quote from: AshimotoK0 on September 19, 2018, 04:13:50 PMQuote from: Trigger on September 19, 2018, 04:07:29 PMNot the first part used with a number ending in 004 I think the K2 still used the -004 part Graham but question is did the manufacturer change the design?Any metallurgy gurus out there? I thing Trig is in the workshop Ash, rummaging around in crates trying to find the one that came out of his K0, he may be some time !!!
Quote from: Nurse Julie on September 19, 2018, 04:19:50 PMQuote from: AshimotoK0 on September 19, 2018, 04:13:50 PMQuote from: Trigger on September 19, 2018, 04:07:29 PMNot the first part used with a number ending in 004 I think the K2 still used the -004 part Graham but question is did the manufacturer change the design?Any metallurgy gurus out there? I thing Trig is in the workshop Ash, rummaging around in crates trying to find the one that came out of his K0, he may be some time !!!Whoops ...hope I am not in the doghouse Julie
Trigger once showed me 550 version, where there is a little trochoidal oil pump built into the bearing assembly ( I think Oddjob had told me about that mod too).So if you have a early 500 and have the bottom end apart it would be prudent to check out that bearing and the mainshaft it runs on.
Quote from: AshimotoK0 on September 19, 2018, 02:45:18 PMTrigger once showed me 550 version, where there is a little trochoidal oil pump built into the bearing assembly ( I think Oddjob had told me about that mod too).So if you have a early 500 and have the bottom end apart it would be prudent to check out that bearing and the mainshaft it runs on.Ash, isn't the trochoidal pump is fitted to the end of the other shaft on the 550, the one that had the regularly spaced rollers, 286 p/n bearing. This was replaced by 91022-374-003 + the pump. The bearing 23931-323-004 was retained right through the 550s.I wonder when the problem surfaced. My K0 is VIN 23k from 7/71, but at least I have a spare later 500 bits, just in case. I suppose there must have been a 23931-323-000 at some time.