Date: Sat, 12 Nov 2016 14:15:14 -0500
Reply-To: Eric Wunrow <VW@ERICWUNROW.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Eric Wunrow <VW@ERICWUNROW.COM>
Subject: Re: CV lube?
In-Reply-To: <CY1PR20MB002974DDB976223C68E66FE9A0BB0@CY1PR20MB0029.namprd20.prod.outlook.com>
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This may be timely for me…
I had four new Lobro joints installed maybe 20,000 miles ago, and the other day heard the left-rear "clicking" for the first time.
As with the joints I replaced, the clicking is only on very steep hills at lowish rpm. (Note: I am not bogging the motor!)
Doesn't this seem awful premature?
They were installed by a trusted shop, by the way...
Eric
Eric Wunrow Pictures
303. 988. 8717
VW@EricWunrow.com (for this list's emails)
EW@EricWunrow.com (for private messages)
On Nov 11, 2016, at 2:29 PM, Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote:
> Didn't you recently have the transmission out for an overhaul? Why wouldn’t you service the CV joints properly back then? At least half the work was done to get the transmission out. If they were serviced why would they need servicing now?
>
> Lubricants come in so many different options. In simple terms greases consist of a soap base mixed with oil and other additives for a given set of applications. Greases are used for applications where oil cannot be contained.
>
> Of the soap bases probably the most common is the Lithium base. Other bases can be aluminum, bentonite, calcium, etc. Yes these are metallic based soaps.
>
> For our CV joints Molybdenum Disulfide (Moly) is added to provide some level of "Boundary" lubrication. This for when the lubricant (oil) is squeezed out from pressure or washed out. Many car manufacturers specified this additive for wheel bearings.
>
> As part of the specifications the oil is often specified for viscosity.
>
> If the original grease and wheel bearing grease are both lithium based there should be no issues. However, now that the boots are stuffed with grease you should expect there life to be shortened. A properly packed joint does not have the boot filled with grease.
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Don Hanson
> Sent: Thursday, November 10, 2016 10:56 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: CV lube?
>
> What's the difference between a dedicated CV grease and, say, a "high temp disc brake wheel bearing" grease?
> Are my wheels going to fall off because I shot 15 pumps (htwb grease) each, from my grease gun, into all four of my axle boots? 15 pumps (x4) used up ~one pint of high temp WB grease... The joints are now much happier....but did I create a caustic mix with the two greases, something that is eating those CVs? No time to do a complete service right now, therefore the short cut and "grease I had"...
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