Life of axel seals on 763

[Johnboy]

Do the axel seals need to be replaced at a certain amount of used time or time in years. I have a 763 which is 24 yrs old I've owned for five yrs. The seals did not leak and the within a few months two of them started leaking. It has about 2000 hrs on it and I'm replacing bearing and seals since one axel would slide in and out about 1/4 inch. One bearing was needing replaced before long. What I'm asking is if the axel seals need to be replaced ever so often or did I do something to cause this.

 

[brdgbldr]

Do the axel seals need to be replaced at a certain amount of used time or time in years. I have a 763 which is 24 yrs old I've owned for five yrs. The seals did not leak and the within a few months two of them started leaking. It has about 2000 hrs on it and I'm replacing bearing and seals since one axel would slide in and out about 1/4 inch. One bearing was needing replaced before long. What I'm asking is if the axel seals need to be replaced ever so often or did I do something to cause this.

Seal life varies. It sounds like your seal went bad because you had bad bearings.

It also may be that they started leaking when you first got the machine because you topped off the oil in the chain case? A lot of operators do not do good maintenance and if the chain case oil is low, and you park and operate on level ground, the oil never reaches the seals and therefore can not leak out of the seal. If oil doesn't reach the seals they will dry out and fail and so will your bearings.

 

[Johnboy]

Well I got the front bearings and seals replaced. I was not too bad of a job I learned a lot that will help if I have to do it again. First I would buy a 1&1/8 ratchet box end. I hope to rears don't start leaking cause they look like they are harder to do. Thanks for advice on keeping it full.

 

[mocus250]

Bearings are First thing to check when you see leaky seal. I did rear Axel /bearing replacement on s 250 and Id do it again. The ratcheting wrench is the tool for that job. Some hydraulics lines had to be removed for rear is difference. I had to modify a wrench or two get to some of the line fittings.

 

[Robanybody]

I don't know who Axel Seals is, sounds like a Swedish porn star. But seriously, what the other have replied is accurate. The root cause however is your chain case oil. You can't stop it from collecting water. But check it occasionally and prevent excessive bearing wear. When the bearings get sloppy, they take the axle seals with them. Solid tires are hard on them as well.
So if you don't want to repeat the process in a couple years, check that oil regularly.

 

[mocus250]

Also wire, baling twine etc will eat a new seal fast. I try to look at. Axel sea area regularly when working around stuff like that.