Date: Mon, 15 May 2017 15:12:03 -0400
Reply-To: Roman Haag <romanhaag@YMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Roman Haag <romanhaag@YMAIL.COM>
Subject: Re: CV greasing - not smooth when put back together :(
In-Reply-To: <CAMOH8LJCJkBq5cTNW-DCDhd9MWRjE_LfutUHcqbVFQyWWQq=RQ@mail.gmail.com>
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A new axle has caused me all kinds of trouble trying to diagnose a knocking sound. Replaced it with another new axle (because a "tech" didn't torque the bolts, so when it fell off, so I thought perhaps it had been damaged). After the 2nd replacement knocked even louder I thought some permanent damage may have been done.
I don't know what the issue is with yours, but I can say with some experience, do not replace the axle and cv. (The Chinese ones I got have a courser spline pattern). If you ever need to replace the boot, just replace the boot and grease.
Roman
Sent from someone's plumbing
> On May 15, 2017, at 14:42, David Beierl <dbeierl@ATTGLOBAL.NET> wrote:
>
> 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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