Wheel seal leaking again and again and again

I think the previous shop is more a Tire installer and routine maintenance and try to get the RV market, they are fairly new in the truck business, maybe 5 years. But they have a big flashy garage and they do alignment on big rigs.

I kept thinking shoddy installation and also trying to think these commercial outfits should be top notch.
Got to know the critical steps and get them right. No such thing as close enough for certain repairs.
I hope you finally found a master and all is good.

Thanks for the update!!

Update: I went back to the shop who checked the oil. They replaced the seal with a 392-9036 Stemco. The seal is a two part assy. compose of a seal and a ring that goes on the shaft axle. The speedy sleeve previously installed had a little dent in it and they say it was installed crooked.

The shop has all tools required to install any type of seal. I checked while they where working and found the mechanic did a very good installation. Let's hope it does not leak anymore. I now have about 600 miles on it and no leaks.

I did call Spicer, they gave me the part number for the seal but told me to check with a retailer for service. That seal is leaking on the left side. I really don't know. I have family that work as truck driver / truck owner, and they say they should use a Unitized seal, Stemco type.

Tom/Barb wrote:
It's all here:
Spicer manual.
starts at page 34.

Last page says: "For spec’ing or service assistance, call 1-877-777-5360 or visit our website at www.dana.com/cv"

I would be calling them direct for factory authorized service.

Installed correctly they should last 400,000 miles. Never had one leak.Maybe a rough place on the axle need to be honed. Make sure they use calipers and measure it.

I went to a big rig shop this morning. They are autorized dealer for Cummins, International truck, Spicer Axle, etc., and they do DOT annual mandatory inspection and repair on big truck.

The vent is OK. It is just a metal fitting and a small plastic tube with a straight hole, plus a bent rubber tube at the end. He did put his finger in the hole in the differential, nothing there, He blew in it no problem. He also checked the oil and it is OK. He roughly checked the wheel bearing looseness and did not find any obvious problem, all is ok. He did not have time to take the wheel off, need an apointment.

He said if he takes it apart, he will probably end up using a unitized seal but he has to find the right one. He was very suspiscious about installation at the other shop and was wondering if they use the proper installation tools.

Kidoo wrote:
I will certainly check the breather again, all I saw the last time was a screwed in fitting and a hole with a bent rubber tube attached to the fitting. Is there something else than a hole as for breather?

I presume the shop checked it too, they paid for the seals and sleeves and the work the last time. Would it be because they are not competent? They change seals on big trucks, they would know how to do it by now.

What gets me is the fact that it allways leak on both side, I could see that one side is allways leaking if it would be the runout or wear on one shaft, but both wheel?

It was not leakin prior to the first replacement of the seals one year ago. The last seal that was installed is the one I got from Spicer. It is a W20HH100. On the seal it says it is a CR35000.

What would be the part number for a unitized seal?

On the bold - that would make me look hard at the vent. Seeing as pressure is equal in all directions, a plugged vent, resulting in a pressure build up, should cause both seals to leak.

The axle runout idea was literally a last gasp at what could be causing this. As has been said before, it's just a seal. There are literally billions of them installed on everything from vacuum cleaners to large truck that work every day. Why yours is such an issue, especially after so many repair attempts, it a mystery.

With the leaking on both sides I'd think the vent would be about the only thing in the entire system that could cause them both to leak at the same time.

Ivylog wrote:
After five times it is not the seals and the only thing left is the vent.

or a cracked ??