Leaky Seal Replacement JD 770

gregz · Nov 29, 2012

Hello Guys.a newbie here
I recently purchased a used 1993 John deere 770. 700 hours 4wd ,60" belly mower.
After the second week there was gear oil leakage by the left front tire. I just a assume the seal is leaking, years of oily dirt around the hub area. Right side nice and clean. It only leaked one day so I presume out of fluid. Today I cleaned everything and filled with one full qt. of 90w and will keep a eye on it.
My question is, is this a repair a garage monkey like myself can handle. Any special tools required? My local dealer told me it would be easier if I unbolted the entire hub at the axle ( my finger pointing) and bring it in and they will rebuild at 2 hrs $70 per hour plus parts. Or should I just bring the tractor in let them do it ,write em a check
Thanks
gregz
If i unbolt here will the whole hub slide off?

Heres my new toy

Katahdin · Nov 29, 2012

Is the axle vented? If so, the vent might be clogged and pressure builds up inside the axle housing causing the leak. Sometimes simply removing, cleaning, testing, and reinstalling the vent plug is enough to stop axle seal leaks.

gregz · Nov 30, 2012

Well not sure what to think. I added a full qt yesterday right to the full line, rode around in both two and 4wd lots of turning. Today nothing no leaks. Self fix, love when that happens. i have owned five weeks or so and only leaked that one time ??
Cheers

Willl · Nov 30, 2012

I wouldn't fret to much Greg, keep the area clean and possible pin point the leak, if ya got one.

If ya ever get a hinkering to swapping out your tires for some R-4's, I'm game.