SOHC.co.uk Forums > CB750
750 K2 Strip & Rebuild - help please
taysidedragon:
--- Quote from: Lobo on July 27, 2022, 12:53:03 PM ---Thanks Nige / Ken; I guess I’ll just stick with the parts manual drawings; if for no other reason than originality.
I’m away from the bike now for a couple of weeks; but do balk at doing the clampings up ‘D washer tight’: yesterday evening I went to my comfort limit wrt what I reckon a M8 Stanchion bolt in an alloy casting should take. (I did though pre-measure the D washers at 2.3mm thickness - maybe there’s an issue here?)
I’ll stick a torque wrench on it later and double check my wrist calibration…
Cheers!
--- End quote ---
If the nut is tight but the D washer is still loose, the nut, or the head of the bolt must be catching on something else and tightening on that. Maybe part of the yoke casting? Are the bolt head and nut the original sizes across the flats? Any increase in size might cause a problem. Just a thought.
Seabeowner:
--- Quote from: Lobo on July 27, 2022, 02:22:20 AM ---Tips pls on compressing the rear shock springs wrt dismantling the units? Have looked eBay but concerned the jaws of all I see too bulky to engage the lower part of the spring (ie next to the damper)
Have tried 4x decent tie-wraps and ratcheting down… but too much force required methinks.
--- End quote ---
I did the 500 shocks using plenty of ingenuity and a couple of ratchet straps. Fixed the shock upright and fixed the straps to an anchor points either side. You can wind the straps up inside the shroud by a turn.
Lobo:
Thanks Gareth: pretty certain of no issues other than my reluctance perhaps. I did consider the fresh paint within the yolk; but I did have to Dremel-scotchbrite much of that away simply to get the stanchions through. A bit of me still wonders whether the D washers are undersized?
Seabe.. like the sound of that and will give it a try. Many thanks.
K2-K6:
--- Quote from: Lobo on July 27, 2022, 09:10:40 PM ---Thanks Gareth: pretty certain of no issues other than my reluctance perhaps. I did consider the fresh paint within the yolk; but I did have to Dremel-scotchbrite much of that away simply to get the stanchions through. A bit of me still wonders whether the D washers are undersized?
Seabe.. like the sound of that and will give it a try. Many thanks.
--- End quote ---
Aah, that may have an impact on the washers, any paint in the bore will push the gap apart where the washer sits.
In manufacturing the bore is made all but identical to the OD of the stanchion and then the cut made. If it's not done in this way then the bore (if too big or small) won't have the same circular shape as the fork leg and not be able to clamp effectively. Any additional coating in there will give error.
Oddjob:
I seem to recall the D washers are 2.3mm thick as standard so it doesn't sound like that's the problem.
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