05-13-2006, 12:19 PM
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Re: Drive shafts
--- In amphicar-lovers@yahoogroups.com, "tcamphicar"
wrote:
>...
> After both drive shafts were restored and installed, one vibrated
> at 40mph and I learned that even though the replaced u-joints
> were perfect, wear to the splines could not be measured
> accurately or repaired. Even though there did notappear to be
> any vibration before the repair, the vibration starte big-time after
> the u-joints were replaced. I feel that the money saved does not
> justify the risk. Who knows what caused the vibration?
>
Easy mistake to make. Make sure the U-Joints line up in the same
rotational plane. I personally experienced that very same drastic
symptom once too about 5 years ago around 35MPH when I did mine, and
separating the slip joint to align it back properly removed the
vibration ... smooth all the way up past 70, but usually stay down in
the 55-60 range. And as yours had no vibration before, I'll bet the
slip joint doesn't have significant wear. So I'll concur with Gord's
suggestion of checking the alignment plane of the u-joint pair. Make
sure they bend at the same position in the angular rotation.
Also, when I do the rubber covers, I use a CV Joint clamp instead of
the hose clamp. Less interference possibility.
Al H
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