SOHC.co.uk Forums > CB750
750 K2 Strip & Rebuild - help please
Trigger:
You have to keep a eye on the pully wheel ( Butterfly ) as, it has alloy rivets and any type of Pickling weakens the rivets.
As per factory they were BZP with a yellow passivate and riveted together after plating ;)
Oddjob:
Not that hard to make a new one if it does break though, made one for the 500 earlier this year. Tweaked how to do it now to improve how it comes out.
Lobo:
Cheers Graham. The passed couple of months I’ve been using the Sandcast as my go-to reference for the K2 rebuild (when in doubt), but alas that doesn’t have the pulley wheel. And tbh, I didn’t give it a thought…
So dang when you pointed out the gold passivate finish! (& thanks). Fixed now…
And yep, the acid wash… basically 30 secs in a weak solution followed by a distilled water rinse - ie not concerned wrt hydrogen embrittlement (which is fully covered in the plating manual)
Oddjob:
They came out nice, your getting good at this lark :) :)
McCabe-Thiele (Ted):
That's an impressive bit of plating you have done - looks like new.
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