TheSamba.com :: View topic - CV Grease

Sun Sep 12, 2021 10:28 pm

Hi,

I swapped out an axle with my spare and will eventually want to R&R the joints on the axle I pulled and put new boots on. I need to buy CV grease. How much CV is needed for one axle (2 CV joints)?

Thanks!
Mrk

Mon Sep 13, 2021 12:46 am

Fill the joint itself and fill the dish in the hub, none goes in the boot.

Mon Sep 13, 2021 1:21 am

90 grams per joint , Mark

Mon Sep 13, 2021 5:48 am

Abscate wrote: 90 grams per joint , Mark

In the English System this is known as a Big Gob.

Mon Sep 13, 2021 6:11 am

Abscate wrote: 90 grams per joint , Mark

Do you use a full size newspaper to roll that joint? Spliff?

Mon Sep 13, 2021 6:32 am

[quote="calvinater"] Abscate wrote: 90 grams per joint , Mark

Do you use a full size newspaper to roll that joint? Spliff?[/quot😀😀😀

Big MoFo Fattie

Mon Sep 13, 2021 7:01 am

Thank you!!

Mon Sep 13, 2021 7:33 am

Dont go by weight.

90 grams is the "spec" listed in the books......however.....I have found that greases in general and CV grease in particular .....vary widely in DENSITY.....meaning the weight per specific volume. This is mostly because several EP ingredients over the years have been swapped in and out to make the CV grease less toxic.

At one poimt in time it was common to find CV grease with as much as 40% lead by percentage ingredient . As that fell out of favor....more graphite, molybdenum, tin and other materials have been subbed in. Also the grease bases have totally changed to support those new materials. They do not weigh the same per cubic inch or centimeter as they used to.

Some are lighter so 90 grams can be more.....some are heavier so 90 grams can be less.

Pack it as Wildthings noted. My only opinio n difference is that I pack two ribs of the boot.

The problem is that in cool weather....most CV greases get forced away from the joint and have too high of a drip point to flow back....so you run low on lube. Having some excess in the boot gives backing and prevents the grease from getting extruded away from where it needs to be.

For lubrication needs....ribbed/bellows boots are kind of stupid. They should be domed like PTO boots.....so they can be fully packed with grease exce0t for an air expansion bubble. Think like a large ball joint boot. Ray

Mon Sep 13, 2021 8:45 am

What Ray is trying to say is to not go by mass (e.g. 90 g) but rather by volume, since different formulations of the grease have different densities.

(Sorry to get all pedantic on you, Ray. :wink: )

Mon Sep 13, 2021 9:32 am

https://www.busdepot.com/un1250090

easy way to do it although any flaps will have cv grease.

Mon Sep 13, 2021 9:57 am

A single 14oz tube will generally do it, but I would want more than that on hand.

Mon Sep 13, 2021 12:58 pm

Wildthings wrote: A single 14oz tube will generally do it, but I would want more than that on hand.

Yep.....thats usually about what i use as well but I try to buy it in a tub for the same reason.....a little extra. Ray

Mon Sep 13, 2021 1:29 pm

Let’s leave ounces for Yemen and Brunei.

I think Mark just needed to know about how much he needed to buy

Mon Sep 13, 2021 1:43 pm

Abscate wrote: Let’s leave ounces for Yemen and Brunei.

I think Mark just needed to know about how much he needed to buy

Since grease can be had in various size containers it's important to note what size container we are talking about. Grease tube can be either 3 oz or 14 oz, it makes a big difference which one you buy.

Mon Sep 13, 2021 3:41 pm

Enough but not too much