YM1500 Axle Seal Leaking

[reb]

[...you can access the axle retaining bolt and clip by removing the case bottom and thus avoid removing the PTO transmission?...]

Yes. Breaking the bolt loose was a real challenge. My BB was attached, so I welded a hook to a box end wrench and pulled on it with a come-along attached to the BB (for the right axle).

If you are going to replace the inner seal, I see no way to get to it without removing the housing (16 &/or 17). BTW, it is probably a good idea to replace the seal collar when you replace the seal.

Good luck.

 

[mjdupre]

Thanks for the reply.

I'm assuming that the inner seal must be shot, otherwise it would not be leaking fluid.

Sounds like it's going to be a lot of fun.

 

[mjdupre]

Brought the tractor home this past weekend and hope to start tearing it down this coming weekend.

Just a quick, probably really stupid, question first....

I'm assuming that the axle case/transmission/PTO and the hydraulic system all share the same fluid resevoir? I had assumed that the differential case would have gear lube, but after reading the owners manual the only reference to gear lube is for the 4WD version in the front end.

And yes, I am really new to this whole tractor thing.

 

[reb]

...
I'm assuming that the axle case/transmission/PTO and the hydraulic system all share the same fluid resevoir? I had assumed that the differential case would have gear lube, but after reading the owners manual the only reference to gear lube is for the 4WD version in the front end....

Yes, except the axle housings are dry. The inner seal ensures that. BTW, the shafts to the brakes go thru the transmission housing, too. I assume there are seals there and they are ok on your machine.

Good luck. Let us know how it goes.

 

[mjdupre]

Hopefully the seal on the brake shaft is OK.
I don't think that there's really any way to tell.

Since It's leaking from the rear axle carrier gasket (#34 on REAR_AXLE_CASE)
I'm assuming that it's the inner axle seal that's at fault, not the brake axle seal.

 

[Eddie]

Thanks Aaron, That's what I was afraid of.

I'm contemplating doing it myself, with the help of a auto mechanic friend.

I was looking at a post in this forum by Eddie: Winter Repairs, it's not clear what model he's working on there. But it sounds like the tricky bit is getting the PTO cluster back in place.

Does the service manual cover this pretty well ?

Any tips appreciated, I'm planning on bringing the tractor home in a couple of weeks to give this a shot, unless someone talks me out of it.

Mike

Mike,
I was working on a YM2020 which only has one seal in each axle. You have to unkey the axle from the gear on the inside in order to pull the axle out on it.

Sounds like the job on your tractor may be simpler.

 

[mjdupre]

Well we got it all torn apart yesterday, really wasn't too bad at all.
Doesn't look like anyone has been in here for quite some time, lots of sludge.

Did notice a bit of wear on the gear attached to the right brake shaft, but since the brakes seem to work fine, and we don't feel like rebuilding the entire axle case, I think we'll just leave that alone for now.

We've decide to replace both the inner/outer seals on the axle, the seal collars look to be fine. We're also going to replace the seal on the brake shaft, however I haven't been able to find a part number for that.
Looking at the Rear Axle Diagram now I'm wondering if it's part #19 ??

I also decided to remove the hydraulic fluid filter, it was really gunked up. Now that I'm looking at the hydraulic system parts diagram it looks like there was supposed to be a spring, #28 in the picture. I assume the purpose would be to apply pressure against the cover plate. There was no sign of a spring on mine, only the spring in the filter which seem to be just a bit short to apply any pressure on the cover plate. Otherwise the filter looks pretty good after a good cleaning. Any thoughts here ?

 

[HoyeTractor]

Looking at the Rear Axle Diagram now I'm wondering if it's part #19 ??

Yes, it is.

There was no sign of a spring on mine,

There must be a few different variations of that setup. Many of the YM1500s that we tear down for parts have different looking screens also. Some are longer with an internal spring, some have a perforated steel inner tube with no spring anywhere, some have a spring at the end... I think the style with the internal spring (the style we sell) does not require a spring at the end but ours are about 1" too long so they fit nice and tight. I would just be sure that it looks like it will seal on the tube and I think you'll be Ok.

Aaron
Parts@HoyeTractor.com
(940)592-0181

 

[mjdupre]

Got it all reassembled this weekend without any major difficulties.
So far everything looks fine, no leaks and everything seems to be working fine.

Thanks to all for the pointers/suggestions.