3710 Wheel seal leak

[tboutwell]

How much trouble to replace wheel seals in the front wheels of a 3710? Or is a there an easier way to stop leak?

 

[deminin]

Can you tell where the leak is coming from? I am not familiar with the 3710, but I recently rebuilt the front axle on my 2910, and I imagine the front axle asm. is fairly similar. The most likely place for a leak to occur would be at the junction of the main axle housing with the bevel gear assemblies. If this is the culprit, there is a large o-ring acting as a seal between the two units. The bevel gear asm. is fairly heavy, and is joined to the housing via 4 large bolts. When you seperate the two, you will see the o-ring. Any dirt, or pinching of the o-ring will cause a leak in this area.

Another place for a leak to occur might be at the grease seal where the drive shaft enters the front axle housing. This isn't too hard to fix...pull the drive shaft sleeve back, remove a pin on the coupler, slide it back, and you should have room enough to replace the seal.

A simpler fix might be to use gear oil, rather than UDT/SuperUDT. The 80/140 wt. gear oil will not be nearly as likely to leak as the thin hydraulic oil, and unless you are operating the tractor in extremely cold climates, you should have no problems with it.

 

[rbargeron]

How much trouble to replace wheel seals in the front wheels of a 3710? Or is a there an easier way to stop leak?

Welcome to TBN - Changing front axle seals on Grand L's is not too big a job, but it's not trivial either. There's a discussion with diagrams and instructions here I've found that once a leak starts, oil of any weight will get thru it - solution is to replace the leaking seal(s). Usually if seals leak oil out they can let water in as well - so the bearings should be inspected while you're in there. As always, prompt cheerful refund if info is bogus. Dick B