One thing I found while doing this job. I think that the Polaris brand grease is not a high enough pressure grease for the u joints. I think that high pressure wheel bearing grease or Molybedenum disulfite grease would be far superior to the Polaris brand. I don't claim to be an expert on lubricants, but as an Aircraft mechanic that has seen lots of different greases in different applications I just don't think the Polaris grease stands up that well in the enviroment that it is in.

 

I have tried sevral different U-joints. The Neapco seem to hold up as good or better than any on the market. Neapco is what you r bike came with. You can get them at most any parts store.

1-1275
1-1875

They are about $13-$17 each depending on where you buy them
Greg

 

i grease my quad with waterproof boat trailer wheel bearing grease. i have used this since 1985 when i got my LT250. it will never wash out with water as some grease is made from soap,and you know what happens when soap meets water.

 

minehunter:

Can the Molybedenum Disulfite grease be purchased at a NAPA store? Does it come in the standard sized tube or is it in the mini size? I have been using a synthetic brand but it doesn't hold up very well in wet snow and water but it is the best I can get locally. Thanks.

 

Molybendum Disulfide grease is easy to find. Go to a John Deere or CaseIH dealership, and you will find it on the shelf. I use the CaseIH stuff. It is their 'black Moly' grease. It is the ONLY thing that Case recommends for use in the kingpins of the older front-wheel-assist tractors, as nothing else stands up as well to the extreme pressure and shock loads that the front end of a tractor with a loader on it has to take. Just for you trivia buffs, they changed the kingpin bearings on the newer models, so they would hold up with 'ordinary' grease. Hope this helps.
Moly is the greatest stuff for places that take extreme pressure, high shock loadings, and extreme dusty/dirty/muddy conditions. Its ONE weakness is that is isn't the best suited for high-rpm spinning shafts (for some reason, the seals don't hold up as well). So for everything except the rear axle carrier on an Xplorer or similar machines, it is probably the best stuff to use.

PS It ain't too cheap, but it IS good stuff! If you get it on your hands in the morning, your fingers still feel greasy in the evening, even if you wash your hands 10 times.

 

I use the Case IH stuff also. It's what I use on the farm and works well on everything.