Leaking axle seal 7753

[dirt ditch]

The left front axle seal of my 7753 is leaking a small amount of oil. I am going to jack it up, remove the wheel and check if the bearing has gone bad. If the bearing is ok I will just replace the seal. My question is, Does the oil have to be drained from the chain case before removing the seal?

 

[SSdoxie]

Unless the chain case is overfull, the oil level is just at the bottom of the axle tube. Rotation of the chains & sprockets throws the oil out to the bearings.

Chain case fluid should be changed about every 1000 hrs. Be a good idea to drain and change it while doing this.