How do you go about draining the final drives on the D69U? I crawled under it and saw nothing resembling a drain plug. The only things I saw were the bolts that go around the bottom holding the case together and they were very worn away from being dragged over years worth of rock/dirt/etc. Also, it seems that both the finals are leaking from behind the sprockets. Is that a bearing tightening issue or a seal issue? Thanks.

By the way I made some progress last night. I got the difficult track adjuster screw moving- although slowly. And, I got the transmission drained, rinsed and refilled.

There are drain plugs on each final drive recessed in the lowest point on the final casing. The plug is about 1 1/2" in diameter and has a square concave hole that accomodates a 1/2" drive ratchet for removal and installation. Draining the finals is a messy job... your drain pan must fit between the underside of the inside pads and the final housing cover.

Service manuals for the D6 9U are offered often on the major auction site. The books are inexpensive and invaluable. I suggest that you get one if you are going to be working on your 9U to any extent.

"Joel59" wrote:

Also, it seems that both the finals are leaking from behind the sprockets. Is that a bearing tightening issue or a seal issue? .

Joel,

From what I went through on my 9U it could be either or both. You could have a sprocket loose on the hub, you could have bearings needing tightening up, and/or you could have a leaking seal.

The RH side was pouring oil on mine until I tightened up the loose bearings, and now the RH side barely weeps any oil. I figured I should also check the LH bearings and they didn't have much slack in them, but now the LH side leaks......

Jack it up in the back and put a BIG bar in between the sprocket spokes and the trackframe and see if you can move the sprocket any.

dd

Thanks Dirt dog. I was reading all that you went through. Now I'm scared!!

"Joel59" wrote:

Thanks Dirt dog. I was reading all that you went through. Now I'm scared!!

Hang with it. This tractor is one of many old pieces of machinery I have owned, and one of the few of those that I think is worth the time and money to repair and rebuild as needed.

dd

deltakj,

there are no drain plugs on the bottom of the final cases. It looks as though it has dragged bottom lots of times however. Do you think it is possible that they have been broken off and polished smooth by dragging bottom many times over the years? Has anyone seen anything like this? Thanks.

you should have a plug at bottom cover final drive --part number 3b551

do you have a picture of it? All my operation and maintenance manual has is an arrow pointing under the final drive. Thanks.

If you can't see it on the bottom of the final drive, I would go the easy route and get a suction gun and suck it out the fill plug instead of trying to get the plug out.

The plug should sit in a recess in the casting so it is partially protected from scrubbing over rocks etc. They can be hard to get out anyway even if you can get a breaker bar or ratchet deep enough into the socket to break it free. I've never seen the reason such plugs are tightened "to the death". I guess everyone is just making sure it doesn't fall out.

You could take a side grinder and grind away the smeared metal at the lowest part of the final casing and find the plug. then you would likely have to drill it and use an extracter (easy out) to attempt to get it out. A replacement plug would sit "proud" of the worn away surface and be especially succeptable to future impacts and scrubs.