D9G final drives

I have a final drive seal leaking on a D9G. The mechanic told me to just keep adding oil. His labor alone could be close to 8000. Is this something I can tackle myself?

Pretty big job, but possible, will need someone to press hubs off and on. Mechanic doesn't want the job?

That is usually two really motivated and competent men three days of heavy work to do having a service truck with at least a 6,000 pound crane and the 100 ton press with all the correct press parts.

The other problem would be why the seal is leaking. From my experience they don't wear out often. The get broken from without or within. Then there is the issue of the dead axle being straight and the cases not being chewed up and on and on. I'm pretty sure a dealer would hit you for $8,000 in labor. Good independent wrenches might be at least half of that. It is an expensive machine to run and fix.

Good Luck!

Yair . . . grandpa rich. John C. beat me to it.

I think you should look at this realistically and calculate contingencies.

In my experience oil leaks from finals are often a symptom and indicator of other ills . . . at very least I would check for metal before you top it up and run it.

If you don't get that dreaded rattle in the can and the oil shows clean it may be time to sit down and think through your options.

It seldom/never is a case of just replacing seals. I don't want to sound alarmist but often, once committed to repairs, such a job can turn into a can of very expensive worms.

Cheers.

grandpa rich, its a shame you are not in the U.K. as i would pop those casings down fast no trouble by myself with an excavator or tele handler to swing a few lumps about, I would do both sides for "8 large" and cry with glee, its no more work realy than doing D8H/K back casings plus the oil pump is easier to get to, on the D9G the dead shaft does not need drawing (S/No Check) as the labrinth was modified to just a drilling and easy to clean, it sounds to me like someone is not keen for a few days work, lets face it the bits are to heavy to lift so its all off the hook whats the drama, if your tractor was on this rock I would start Tuesday, (got a bit on Monday)

best of luck tctractors


The 3 day for 2 men thing depends on that top pinion, if its good and no snags are found (Knackered Bolts, Hub guards) I would steam it easy in 4 days = 2 large a Day "magic"

A final drive job isn`t a DIY project by any means unless you are well stocked with a lot of special tools. Agree 100 % that there is a reason the seal is leaking. It also isn`t as easy as it might sound by some of the previous responses. Take a good look at a parts breakdown of what`s inside the final drive case. A very expensive planetary drive as opposed to a gear reduction set up should you need to go that far.
Even if it is just the sprocket seals, you would still need to pull and press back on the sprocket. That is where all the expensive tools come into the picture. Good luck.

grandpa rich, I have seen quite few D9s with final drives leaking. Don't take that mechanics advise about just keep filling them with oil. We tried that. They will only get worse and you will not be able to keep any oil in them for very long. I saw some that the oil would run out as fast as I put it in. Running them in wet borrow pits was a recipe for a final drive disaster. Especially when you take a relatively warm final drive into cold wet slop.

grandpa rich, I have at least 2 or possibly 3 sets of tooling to tackle that rim etc off and on, plus I will stick to my guns that its not that bad a task, I will admit that on Duo, Cone seal leaks its best to do both sides, plus you have the spanners out so its not that much more work, I usualy ask my customers to pop the blade off for me, unless its an inside frame set-up, then the blade is handy, anyhow you must understand that the F/Drives are oil pressure fed so as soon as the outside hub bearing gets the wear lines caused by the track frame limited movement the pre load soon starts to drop away on the other bearings in the hub causing poor load tension on the seals, I would do around 10 to 15 F/Drives a year so its easy for me.
tctractors

I would check the filters they would give a indication of $$$$ to be spent.
Cheers Will

Thank you everyone. I've been in Arizona visiting my sister. We need it to pull a tile plow. I have some serious decisions to make. Thanks again to every body.