SOHC.co.uk Forums > CB750
Some Minor Issues to Sort
McCabe-Thiele (Ted):
I'm guessing the bike originally had plain bearings so they might be suffering from water ingress issues?
Oddjob:
If the bearings were ever notchy they'll still be notchy but as you've loosened them off the whole of the front end will now be moving instead. Fit taper rollers is my advice.
The Hondas these days have the headstock bearings pre-tensioned when you fit them, torque the headstock adjuster ring down to 18lbs, move the headstock a few times to seat the bearings, release the pressure then re-torque to 18lbs, you then fit the top yoke and get a spring balance and hook it to the top yoke, it should take approx 2.2-3.3 ftlbs to get the top yoke to move from central, by hand this feels quite stiff if I'm honest but when the forks/wheel goes in the bars move quite freely. Most people think it's too tight and slacken off the headstock bearings but that then leaves them too loose when everything is fitted.
McCabe-Thiele (Ted):
Pyramid parts for some decent branded kits at a sensible price if you go for taper rollers I fitted them to my 500.
Oddjob:
Depends Ted on who's bearings are in the kit, far too many with cheap chinese ones. If they are Toyo, NTN, Natchi or SBK they are good bearings.
You also need a kit with the spacer included.
Somewhere there is a thread with all the info needed, including bearing sizes.
McCabe-Thiele (Ted):
Mine were NTN iirc I did post when I bought a kit for my 400. They also provide a better seal attached to a shim.
I shimmed mine to fit leaving sufficient top thread on my 500. The 400 has only half a kit from a different supplier I will remedy that in the future.
I want to keep the 400 as a runner until the 500 is completed - then I will return to tweaking a few bits on the 400 before I sell her or hit my expiry date - I was 75 at the weekend. lol
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