SOHC.co.uk Forums > CB350/400
Cam chain adjuster bolt 400-4
Dave_Canada:
Hi, just saw this:
The original bolt threads into the engine case with 6mm threads and has the locking nut on an 8mm thread, the nut also holds down the washer that compresses the O-ring.
You can see that on the "new" original pattern bolt.
But that bolt is easily damaged off - you see the big nut and think it can take 8mm torque. A common fix was to drill out the remaining bolt if it snapped off but that's really hard to do on the frame with a hand drill without ruiingn the 6mm threads. SO the hole gets drilled and tapped for an 8mm bolt or some size that will fit. I don't know if your Allen bolt is 8mm or an inch size.
Anyway, this works fine and there's no good way to go back to the OEM bolt. The hole doesn't seep oil without the O-ring.
I suppose you could put a 6mm keensert in the bottom and an 8mm keensert above it but that would be quite a trick. Plus adding an O-ring recess...
mike the bike:
Using the aforementioned repair kit will do the job nicely but I wouldn't fit it with the engine in situ. Buy one and save it for when you next take the engine out.
Bryanj:
From memory a 6mm keensert uses a 10mm tap so an 8 would at a guess be 12mm tap and i am not sure there is enough metal around the holes for that
megamax:
Hi all
Anyone use the repair kit from NOXANDRATTLES.
would be good to see a pic. I have a similiar issue and looking for a solution.
cheers
Eric
Navigation
[0] Message Index
[*] Previous page
Go to full version