SOHC.co.uk Forums > CB350/400

fitting the camshaft or not!

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billdn:
can anyone explain installing the cam shaft on a 400/4. the engine is out of the frame and being reassembled on the bench. the Haynes manual procedure just will not work as the cam shaft will not go all the way through the sprocket with the chain on. it is a new linkless chain. a you tube clip i saw said to hold up chain, slide camshaft through and then slide on sprocket and put chain over - easy peasy i thought! however there just doesn't seem to be enough slack in the chain to get it over. i now have the camshaft half in and half out and the chain is so tight i'm afraid i'll break or stretch it. i've removed the cam guides front and rear to give a bit more room but to no avail. the flange on the shaft that the sprocket fits on fouls the bearing seat as well. any ideas. the chain was from David Silver so i guess should be the right length. Any ideas before i resort to the club hammer. Totally wrong but just feels satisfying!  >:(

mike the bike:
I've just done mine about an hour ago so I know what you're on about. 
Make sure you remove the rear slipper top holder thingy - the one that's secured with two M6 bolts towards the rear of the head.  This will give you enough length inthe camchain to fit it properly.

Hope this helps.

mike the bike:
Have a look at instructional clip...

https://m.youtube.com/watch?v=YACuV9E3f7w

billdn:
Thanks for the reply Mike, but alas to say I've already removed that as well.  :( it just seems that the chain is about 3-4 links too short. i can rotate the engine with the bolt on the points end of the crank and the chain moves ok. i'll try the video link you suggest.

billdn:
Yep , that was the video clip i watched earlier in the week which filled me with such hope! i notice he mentions jiggery pokery with the cam chain - sounds like the bottom end of the chain may not be on correctly. So all i need to do is get out the half wedged in camshaft and try again.!!!!!  :-\
 any other ideas that come to mind would be great. i'm trying to persuade the chain off the sprocket but it doesn't have enough slack to even do that. the cam shaft is in to the point that all i need is the flange, that the sprocket bolts into, to get past the last bearing journal and it's home - although its 2 -3 mm bigger than the gap available.

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