SOHC.co.uk Forums > CB500/550
Is this a genuine clutch lifter push rod mod or what...
Trigger:
I am interested in the push rod at the right price.
Woodside:
Hi I had a similar problem but I bent my rod.
.....our friend Bryan helped me out and I made another one.
I think if I look I might have another one as I made a couple from stainless ...
.or at least the specs of a new one ...the hardest part was getting the domed end to marry correctly so as not to jam in.
But at the end of the day it's just a straight piece of rod.
I believe some people,put a small ball bearing in the middle to aid or even repair the rod?
Details are here
http://forums.sohc4.net/index.php?topic=118045.0
Bryanj:
What happens is if you let the chain get very slack it "whips" off the gearbox sprocket on the over run and whacks the rod breaking it just inside the seal/bearing. If this is what happens the piece is too short to use a ball bearing between the two as the short piece waves about and makes the seal leak. If you could have two identical pieces a ball bearing would work fine
simonster:
Thanks for the replies. I have removed the two pieces which measure 7.8 mm diameter by 255 long, which is way off the width suggested by steved of 3/8 inch or 9.5 mm. I have used manual vernier and may be a point or two of a mm out but even with my eyes can't be that far off. This rod is sub inthe oil seal and lifter plate on the basket side so iI'm happy the rod is correct width for the bike but was wondering if the 9.5 mm is from a different model, mine being the k1 1972. Any chance you could measure your spares steved OR odd job just to confirm so I can safely fashion the correct spec. Will try and diy as I have with the rest of the bike but will leave the door open just in case guys.
simonster:
Bryanj, I think you were bang on with your analysis. The bike had a missing chainguard within the cankcase and the break was just behind the oil seal. So refitted a chainguard from a donor case just need to sort the push rod!
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