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Message

Mantis Driveshaft U-Joints

2002-11-01 by ronald.mcleod@aspentech.com

Maniacs . . .

This may be of no interest to anyone other than Mantis owners, but who
knows.

My Mantis developed a noticeable vibration on acceleration and at steady
highway speeds.  Turned out to be the driveshaft U-joints.  There are 2 -
one just behind the overdrive, and the other immediately in front of the
rear axle differential.  But wait - they're not the same!  The front U-joint
is TR6.  The rear U-joint is unknown.  We managed to find a replacement
U-joint that had the proper dimensions, and had to increase the bores on the
yokes by a few thou to get it to fit.  The provenance of this new U-joint is
completely unknown, but not to worry, as I have an identical spare.  This
means that when the U-joint fails again in another 30 years, I will have the
needed part.  Trouble is, I'll be 87 then, and won't remember where I stored
it.

Regards . . . Ron McLeod
1970 Marcos Mantis P8/5858

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