<VV> Diff leak update 66 Saginaw

[Bryan Blackwell]

Hi Mark,

Curiosity got the better of me, I did a little searching on shaft seal runout and found specs of .002" or less seems common these days for crank seals, so it seems that extra couple thou on yours may in fact matter.  Be aware also that the purpose of the split ring is to help center the shaft, if yours has a lot of wear that could also contribute to the problem. You didn't say, I'm guessing you also checked the pilot bushing, yes?  Final note is as I recall one is supposed to fill the transmission, then the diff.  The axle lube settles pretty slowly, so this should give an accurate fill.  Hopefully you get it sorted soon!

--Bryan

> On Nov 14, 2023, at 6:45 PM, Mark Plucenik via VirtualVairs <virtualvairs at corvair.org> wrote:
> 
> Thanks for all the reply's and suggestions.  I got the drivetrain out again
> today and separated the transaxle from the motor.  I inspected the
> through-out bearing snout inside and out  for any  cracks or problems, all
> looked good. I removed the input shaft, set it up in a lathe using the
> drilled centers on both ends of the shaft. With a dial indicator I checked
> the runout on the seal area and the piolet bearing end.  Numbers were .007
> and .004 respectively. A second shaft I got from a club member measured a
> little better,  .005 and .002. I have an early model shaft which I also
> measured was around .004 and .002.  I don't know the specs for this but
> these numbers all looked usable to me. I am interested in your opinions.  
> 
> On the double seal idea,  I does look like it should work and still use the
> special washer. The only drawback is the OD on the second seal will be a
> loose fit. Still thinking about how I want to "tighten the gap" on the
> second seal.