Date: Mon, 15 May 2017 14:42:14 -0400
Reply-To: David Beierl <dbeierl@ATTGLOBAL.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Beierl <dbeierl@ATTGLOBAL.NET>
Subject: Re: CV greasing - not smooth when put back together :(
In-Reply-To: <f1969a19-2a13-dcd7-739d-c2930f280408@williamsitconsulting.com>
Content-Type: text/plain; charset="UTF-8"
Hard stuff can indeed be damaged by dropping onto concrete. Dropping an
axial-lead diode onto concrete can destroy it -- the article talking about
that estimated peak loads of 25,000 gee from dropping four feet onto
concrete, side impact. There's undoubtedly some damage to the ball, but
any effect from that will show up down the road.
A new Lobro joint has negative clearance between balls and races and is
quite stiff to operate by hand. I suspect that's what you're noticing.
Yrs,
d
On Mon, May 15, 2017 at 1:41 PM, Steve Williams <
steve@williamsitconsulting.com> wrote:
> Hi,
>
> I decided to check for wear and re-grease my CV joints.
>
> I did NOT remove the CV's from the axle, so the middle "cage" never came
> off to get mis-aligned.
>
> I cleaned, found two tiny pits on two different surfaces, so will rotate
> my axles (standard transmission).
>
> I did one joint at a time to ensure the parts did not get mixed up.
>
> With the axle still off of the van...
>
> When I re-assembled, the CV joint feels "smooth" when I operate it by
> hand in approximately the same range of motion as it would have on the fan.
>
> If I pull the shaft out a bit, there is some catching as I rotate the
> shaft/cv by hand.
>
> I have triple checked the assembly, making sure the thin part on the
> inside cage is aligned with the "thick" part of the outer housing.
>
> The only think I can think is that the steel balls didn't go back in the
> same groove that the originally came from and aren't "mated" to their
> new home.
>
> Part of me wants to reassemble and just drive, but the other part of me
> doesn't want a failure on the road!
>
> I've never felt a "new" cv joint, so I do not have anything to compare
> to. All I have to compare to is the used CV's, which seemed to operate
> smoothly throughout the entire range of motion.
>
> I did drop a ball on the concrete floor of my garage, but it did not
> appear damaged (yes, I cleaned it) and I cannot imagine the hardened
> steel would be damaged by dropping 2 feet onto concrete.
>
> Do I have a problem, or is this slight sticking "normal" after
> reassembling used CV's?
>
> It's really hard to describe the sticking :(
>
> Thanks,
> Steve W.
>
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