Rear wheel seal on YM2000

[clemsonfor]

I have the tractor home. I am going to change the hydro fluid and fill my rear tires. But yesterday i notice that the back tire has fluid leaking out from the axle shaft out on the tire side. Now is the time to do it before i fill the rears and put new fluid in.

I know a few of you have done this. I am at Hoye's site looking at diagrams after i post this. But do any of you have a step by step instuructions or what needs to be removed or things i need to watch out for?

 

[winston1]

Haven't been there, done that, but here is what I have read will have to be done. 1. You will need a puller to remove the wheel hub. 2. Next remove 4 bolts and the bearing carrier. The seal will be in the carrier. Might and might not have to replace the seal sleeve. Might clean up ok. Probably need to replace the carrier gasket.

 

[clemsonfor]

Like a 3 jaw puller?. Then the carrier thats bolted to the axle will remove, then when the carrier is separated from the hub i will find the seal in there?
Hoye's drawings are spit into 2 diagrams and its hard to get a total sequential teardown view.

what will keep the axle shft centered in the axle tube when the carrier and hub are pulled? will it just kid of hand till i replace the assembly?

 

[winston1]

2 or 3 jaw. Guessing it might take a pretty good pull. Yes, the seal will be in the carrier. I don't think your axle is going to drop to a point of hurting anything. Wonder where Carey is? I am pretty sure he has done this on his 2000.

 

[careyo63]

Just Sat Down Winston LOL. Had all I can do lately Ugh!!!!
I didn't replace my collar Clemson.It was pitted but had to let it go. I have it but When mine started Pouring I was just starting to be able to do "Anything" again. Lucky I was able to do just the Seal. Really not much to it. Your need a 3 jaw with my guess CRS. still but at least 8" to get to the collar. Grabing a good hold of is another problem. Your have to Grind/Cut a few places to get a good hold of it and probly have to heat it up. But once you move it your be able to get behind it. I hate leaks on anything I own. So far the only time I'll see a drip is when I park it after a few Hrs. use mowing on it. And it's only a drop or two. It's been a few yrs. and haven't had to add any Hyd.Fluid yet!!

 

[clemsonfor]

Read your reply winston on my unsmart phone, just stumbled upon the web browser while in town. This is my old phone but the newer one was washed so i had to go back to the old one, which its web browser is better than the new one? The newer on did not have enough memory and just froze up. This one i texted in a store to get a coupon and had to go online, i got there did the form and then saw i could search the wed! There was no icon for this on the phone so the only way i know how to get there was through this text message? Anyway first place i went was tbn, saw your reply and tried to log in and my phone would not let me. i was gonna say i saw cary's reply on hoyes site. But anyway here i am back at the computer this mourn.

Cary i see your post and am about to read it.

 

[clemsonfor]

Just Sat Down Winston LOL. Had all I can do lately Ugh!!!!
I didn't replace my collar Clemson.It was pitted but had to let it go. I have it but When mine started Pouring I was just starting to be able to do "Anything" again. Lucky I was able to do just the Seal. Really not much to it. Your need a 3 jaw with my guess CRS. still but at least 8" to get to the collar. Grabing a good hold of is another problem. Your have to Grind/Cut a few places to get a good hold of it and probly have to heat it up. But once you move it your be able to get behind it. I hate leaks on anything I own. So far the only time I'll see a drip is when I park it after a few Hrs. use mowing on it. And it's only a drop or two. It's been a few yrs. and haven't had to add any Hyd.Fluid yet!!

so am i grabbing the carrier plate to pull or the hub and leaving the carrier bolted to the axle tube? Also looking at the hub (with tire on) it looks like ther is a dust cap with about a 1/2 bolt in the center of it. I have not looked that close at it, and am going to place an order soon for it and O-rings for the lift cyl (thanks winston for the reminder) and more oil filters.

I juess when you take that cap and bolt off the end of the hub you need to replace the bolt or else you will be pulling on the axle shaft it self, but i guess as long as the puller is not small enough to mess up threads by going into the axle it wont matter?

Oh winston, the diagram at Hoye (at least on YM 2000) shows 3 rings on thepiston. 2 are o-rings and one is a "back up ring, part #19" It costs $10. Did yours have this and is this a rubber ring? Did you replace this one or just the other 2 rubber rings?Yanmar Tractor Parts: HYDRAULIC_LIFT

 

[winston1]

You will be pulling the wheel hub by itself. Putting the bolt in and center punching it to give the puller a place to spin would probably work fine. You sure don't want to mess up the threads.

The lift cylinder ring #19 is a teflon back up ring. It should be ok. Sure can't guarantee that. Looks like it is $10.50. #20 is the piston o-ring. #26 is the sealing o-ring where the cover #21 seals to the lift housing.

 

[deepNdirt]

clemsonfor, It took me a minute to sort out the 2 topics posting a illustration of the hydraulic lift assembly when trying to gather information about the rear wheel seal kinda threw me a loop though I did figure out you were writing about Winstons Hydraulic rebuild thread, http://www.tractorbynet.com/forums/showthread.php?t=253878&p=2955798#post2955798
Just so no one thinks this is the schematics of the wheel axle assembly, as I did at first glance:confused2:

 

[clemsonfor]

Yea sorry for that one. I guess you had to follow the thread. I jumped from the topic repair to my order at Hoye where i will order parts for 2 projects, then asked a question in my thread instead of going to winstons thread. Sorry for the confusion, i hijacked my own thread.

Winston, i was thinking that i should put the bolt back in and then push on that with the puller. I guess thats a hardened bolt and will be able to take the force. Oh well it will be loose so even if i crack it i will be able to get it out. but im postitive that this will go easily!

 

[careyo63]

Without a doubt use the bolt until it comes loose. Or risk damaging the Threads??? Your not going to do anything to the bolt. Mine was Org. and the Hub has never been replaced or removed. It popped loose with only a couple taps on the puller. Once you get past the Hub the Seal Housing is just 4 bolts and the seal. Your need to replace the gasket. I just used gasket paper for a new one. Then your see what you dealing with on the Seal Collar.

 

[clemsonfor]

I know you said you did not replace your seal collar, due to your condition. But if i were going to replace it, im gonna order it. Do you think it would just drive out like a bearing race would.

I know this is a bunch of questions, but i find if i know what im doing a job goes 3x faster, than if i just dissasemble stuff till i figure it out.

 

[careyo63]

I ordered one just didn't use it for what was involved to replace it at the time. I was on the 2000 today and was looking for it to leak. Sure enough may be a drip or two when I parked it.

 

[clemsonfor]

I wiped mine last yesterday afternoon, and the tire till it was not "{wet" with oil. Today after church and going on the boat, i looked at it and it was just as wet. Pool in the lip on the rim and then overflowed and drooling down the tire. I dont see it drip but its going pretty good i guess.

 

[careyo63]

Your have to wait until you get it apart and see if the collar is bad. You shouldn't damage the seal if you do have to go back into it and replace the collar if you still have a leak. Your have a good idea after seeing it what your need to remove it. PITA. Yep!!!

 

[clemsonfor]

Well i put my order in last night. Im getting the seal colar, some more oil filters as i used my last one this summer, and i am getting the hydro cyl oring and the ring for the cover plate, as well as a carrier gasket (yes im to lazy to make one, plus id have to buy paper anyway) and maybe a thing or 2 i cant think of?

 

[clemsonfor]

View attachment 276794 View attachment 276795 View attachment 276797View attachment 276798 View attachment 276799 View attachment 276801

Got the hub pulled, carrier removed and the seal out. My colar is pitted and worn but i have no idea how to get it off? It appears to be pressed on.

A tip for those dont think like me the fluid would only be a little up the axle and after maybe a gallon it will be done. You better drain it all, it took almost 2 gallons before the axle stopped draining. I was planning on changing fluid anyway, but it would of been way easier to drain it out of the plug!

Back to the collar and the outside bearing. Say i wanted to change that bearing, how do you get it out? Do i pull the axle tube off and then can i knock them off, or pull the circlips at that point then press them off the shaft? Looking at the hoyes site, looks like the tube may slide off, then you pull a circlip to get the sale shaft out, then you can press the axle out of the bearings? This appears to be how the collar woul have to be removed? Oh whatever they sealed the carrier on with looks like a combination of a paper gasket, some glue and silicone???

And some pics, as it did happen.

 

[Gary Sweat]

View attachment 276794View attachment 276795View attachment 276797View attachment 276798View attachment 276799View attachment 276801

Got the hub pulled, carrier removed and the seal out. My colar is pitted and worn but i have no idea how to get it off? It appears to be pressed on.

A tip for those dont think like me the fluid would only be a little up the axle and after maybe a gallon it will be done. You better drain it all, it took almost 2 gallons before the axle stopped draining. I was planning on changing fluid anyway, but it would of been way easier to drain it out of the plug!

Back to the collar and the outside bearing. Say i wanted to change that bearing, how do you get it out? Do i pull the axle tube off and then can i knock them off, or pull the circlips at that point then press them off the shaft? Looking at the hoyes site, looks like the tube may slide off, then you pull a circlip to get the sale shaft out, then you can press the axle out of the bearings? This appears to be how the collar woul have to be removed? Oh whatever they sealed the carrier on with looks like a combination of a paper gasket, some glue and silicone???

And some pics, as it did happen.

I think the 2000 and the 1900 are pretty close in the way the bearings come out. Here's some pics of mine when I changed the bearings and seal.
The piece of pipe was used to push the new bearing back in.

 

[winston1]

Clemsonfor, I can't view your pictures. Maybe because I don't know how. Message comes up "Invalid attachment specified".

Would seem to me the best way to change that sleeve is to remove the axle housing as Gary did. I'm not sure you would have to have a press to do the job. I'm sure it might make it easier. My experience would lead me to believe the bearings will not be that tight fitting. The sleeve probably is. Looks to me like the shaft with bearing would tap out of the axle housing once removed. Then you could use your puller to remove the outer bearing and sleeve.

Normally, a sleeve like that without an o-ring seal would be a shrink fit. Reason being it would leak if not. The parts drawing does not show an o-ring. If you determine to remove it take a chisel and hammer and whack it good. It would most likely help to loosen it for easier removal.

As you know I haven't been there done that, just surmising in my mind how it all goes together. Carey and Gary are the ones to really listen too.

 

[clemsonfor]

I pulled out the service manual. To get the axle off i need to pull the PTO unit. There is a bolt that retains the axle to the axle gear. you remove that 1 bolt from the inside then the bolts on the axle tube. It appears the whole assembly then comes off like gary shows. Then i think you would need a press to push the shaft with the bearings on it out of the tube, along with the ring once it was heated?

The pics were showing up as thumbs in the thread last night after i got out and then back into it after posting?? Ill mess with it today when i get time.