Hi, since last November, I had oil seals replaced 4 times on the rear axle and they still leak. I need some info on the seals used and liked to know if anyone had seal replaced and which part number they used. I have a Roadmaster chassis on a Monaco Cayman 2003.First replacement they used an SKF seal part number 34384. Two of them installed by different shops leaked pretty bad.Second was a National seal 370047A, 3 of them leaked, installed by different shops. Those two seals are interchangeable.Now, I phoned Monaco and they refered me to Dana Spicer, Dana told me the seal to be used on my Dana S150 specific part number is a Spicer part number W20HH100. I cannot find any cross reference for this seal and it is a rare find, but I finnaly found one. This seal is also used on a W20 and W22 Workhorse part number W8000276.I also found some info on this site: http://www.oemys-performance.com/whparts3.htm.I you have any info. please let me know, thanks.

Years ago, we were on a trip with our Chevy truck and Lance camper. Three times on the trip, the rear axle seal blew. I kept replacing it because it was oiling up the brakes. Apparently, the seal surface had lost some diameter and wouldn't seal. I found a company that made sleeves that slid over the axle and then you installed the seal. The sleeves looked like a section of a soup can. This solved the problem. Sorry, but I don't remember what they were called.

Something isn't right, for sure. The speedi-sleeve will solve the issue IF the shaft is worn. Anyone replacing the sleeve should know if it's needed or not. The other issue may be the seal gets damaged when being installed, either when pressing it in or when the axle is reinstalled. That is fairly common but you'd think one of the shops would have done it right. If that checks out I'd also check the axle for any runout. Those seals aren't designed to handle any runout so if the axle was off by even a few thousands it would cause premature seal failure. On a side note I sell these seals as part of my real job and have installed a bunch of them over the years. There isn't any magic to them but they do need to be installed properly.

I have installed may speedi-sleeves, I use a low flame propane torch to warm the sleeve up and it will slide right on. Once it cools it contracts to the axle. I believe Stemco is primary maker of these.

Need info on Rear Axle Seal | Good Sam Community

Kidoo
Explorer
Aug 01, 2017
Rickieblue wrote:
Where I work, we use Stemco seals almost 100% of the time....look at this 2 piece seal..the ring goes on the spindle... Click here!

This is the type of seal I would like they used, but they do not seem to be the best shop in town for Axle. I am stuck with them for warranty work and this is why I ordered the original from spicer, if I tell them different, they will blame it on me for having provided the seal.

If it leak again I will go to a shop that specialize on truck axle.
Kidoo
Explorer
Aug 01, 2017
rjxj wrote:
Kidoo
The one they had been putting in was for a smaller diameter shaft so it would have been too tight on your 3.5 in shaft. Not a lot tighter but it probably didn't help the shaft any.

Yes, this is what it looks like, probably squeezing the seal.
azrving
Explorer
Aug 01, 2017
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Rickieblue
Explorer
Jul 31, 2017
Where I work, we use Stemco seals almost 100% of the time....look at this 2 piece seal..the ring goes on the spindle... Click here!
Kidoo
Explorer
Jul 31, 2017
OK, just got the new seals from Spider. Indeed the number on the box is W20HH100, but, on the seal it says it is a CR 35000, common seal. It's just too bad that Spicer would not give this number instead of their number so you could at least go for interchange if you do not have the CR in stock

They will install a Speedy Sleeve or Wear Sleeve tomorow, they say the shaft was worned when they took the old one out the last time they did it. OK, now it is worn!! Why the hell they did not install a sleeve the last time?

Anyway, the bill is on them, so they can do whatever as long as it stops leaking for my next trip to Mexico.
Kidoo
Explorer
Jul 22, 2017
K Charles wrote:
The one you put in skf34384 is for a 3.438 shaft
The right one skf35000 (w8000276 is for 3.5 shaft
The lip code and width are a little off too

This is what I think too, SKF is a little off. Hope the right one will do the job.
K_Charles
Explorer
Jul 22, 2017
The one you put in skf34384 is for a 3.438 shaft
The right one skf35000 (w8000276 is for 3.5 shaft
The lip code and width are a little off too
K_Charles
Explorer
Jul 21, 2017
Has the inside and outside bearing both been changed?
That is a common seal and should be in stock at any good sized truck repair place. As said above napa has them.
cyntdon2010
Explorer
Jul 21, 2017
Bruce Brown wrote:
It looks NAPA has them too.

NAPA Seal

56.00 per sleeve : no way
Kidoo
Explorer
Jul 21, 2017
They replaced the seals when they replaced the Brake Rotors, there was no leak prior to that. The oil level was pretty close to the filling hole and the vent was defenitly not plugged, I checked it twice and the shop checked it too.

The seals installed where SKF 34384, then National 370047A, but there is no information anywhere that these are an interchange for the original W20HH100 or W8000176.

The SKF 35000 look much more like the W20HH100.

As for dimensions, Spicer does not provide any dimension for the W20HH100 or the W8000176. So it is hard to say if the replacements where adequate to start with.

SKF 35000 : http://www.rockauto.com/fr/moreinfo.php?pk=1837330&jsn=8

W8000176 or W20HH100: http://www.shop.classarvrepairs.com/Workhorse-Rear-Wheel-Seal-Assembly-W8000276-W8000276.htm
http://www.ebay.com/itm/Spicer-oil-seal-W8000276-W20HH100-/182560432443?hash=item2a8173213b:g:BzsAAOSwTuJYnI~w&vxp=mtr

At this web site, they list the tools to install the seals and CR35000 is on the same line as W20HH100.
http://www.manualsdir.com/manuals/258975/spicer-drive-axles-illustrated-parts-list-axle-shafts-wheel-end-parts.html?page=20

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