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Sluge in center axel housing/pump/transmission - clean out

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AussieDoc

04-21-2008 19:57:48




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A couple of days ago I seperated my TEA at the gearbox and center axle housing. I had to replace 1st/2nd gear selector fork. Easily done.

However I saw that the center axle housing the hydraulics had a lot of sludge. And the only way to clean it out was to remove the pump and use a lot of rags and diesel. I got it all out but it was a hell of a messy job.

I have read previous posts in relation to cleaning sluge out. Some believe that filling the transmission and rear end with diesel and running it for a little time will help loosen the crud. Well I can tell you that there are many nooks and grannies in the castings and I doubt it would do much. There are areas that just won't drain out and this is where the sluge builds up.

Now I'm not saying that you need to split your tractor to clean it out but I reckon to stand half a chance you really need to remove the pto shaft, hydraulic pump, dip stick cover and pto engange lever cover. It's not difficult. And if you have have an interest in how things work then it's very rewarding. :D
I also used a air compressor degreasing gun with diesel. That worked very well.

The gear box is a little more difficult to get to unless you area prepared to remove the steering box which I had to do inorder to get the selector out. In my opinion it's definately a design fault. It would have been nice to have had a separate gearbox top cover. :x
The up side was that there was bugger all sluge in the gearbox and what was there was easily removed through the drain plug.

I was also happy that there was not evidence of water in the oil.

It was a strange feeling knowing that I was perhaps the first person since the thing was built to be dismantling parts that were put together by someone somewhere so long ago...
I'll photograph it all and post it if I can work out how to. :?

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AussieDoc

04-25-2008 17:38:53




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 Re: Sluge in center axel housing/pump/transmission - clea... in reply to Richard L, 04-21-2008 19:57:48  
With the amount of sludge and crap I had I wouldn't have liked to dilute it in the hope it would drain out. As John (UK) said, the sluge could end up in places you don't want it. And after all I was talking about sluge in the hydraulic area.

However, the sludge was there to begin with because of a lack of oil changes over the years. So perhaps if the oil was changed regularly then Lance J's idea with the transmission fluid added before the change may help in keeping things drain clean. :roll:

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Lance J.

04-23-2008 13:59:31




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 Re: Sluge in center axel housing/pump/transmission - clea... in reply to AussieDoc, 04-21-2008 19:57:48  
Last year before I changed the oil in my TO35 for the first time, I added 4 quarts of Dexron transmission fluid and drove it around for awhile to help loosen up the crud. This is something I did when I was a car mechanic to desludge an engine before disassembly or if I suspected that sludge was causing low oil pressure.



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John (UK)

04-25-2008 07:20:03




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 Re: Sluge in center axel housing/pump/transmission - clea... in reply to Lance J., 04-23-2008 13:59:31  
The only problem with that idea in this instance is there is no oil filter in the system to prevent the crud from passing through the Pump and valves. If there was an oil filter the idea could possibly be useful to know...John



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John (UK)

04-22-2008 13:25:33




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 Re: Sluge in center axel housing/pump/transmission - clea... in reply to AussieDoc, 04-21-2008 19:57:48  
The sludge forms when the oil isn't changed often enough, it should be changed every 12 months even if it doesn't turn a wheel as it deteriorates and the result is sludge. It should be changed when the oil is as hot as possible (should present no problem in Australia) and then it will wash out all the crap that is in there. make sure that the bottom of the gear shift lever isn't worn and allowing water in; and on the Draft Spring at the back of the Seat there is a felt washer under the spring, this is another place that water can get in. You can fit a rubber boot on the gear change lever but the Draft spring is more tricky and really needs to be stripped down and the parts replaced, if it isn't seized up.....John

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John in MS

04-21-2008 20:23:32




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 Re: Sluge in center axel housing/pump/transmission - clea... in reply to AussieDoc, 04-21-2008 19:57:48  
I found pretty much the same situation in my 1950 TO20 when I replaced the PTO seal. After I scraped out as much as I could, I used an inexpensive sprayer as you would use for insecticides and weed killer to spray diesel into all those nooks and crannies until it ran clean. I went at it from the rear and through the tranny oil filler and the side plate for the PTO lever. But you are right, it is one of the messiest and nastiest jobs I've had to do on this thing. And it was a good feeling to know everything in there was nice and clean.

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