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Re MF35 Trans/differential

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Larry from NY

05-01-2001 18:12:40




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I bought my 35 about this time last year. I drained the trans/diff fluid. It was very contaminated with water. I let it drain for a couple of hours and refilled it with a generic trans fluid. Because I am an avid board reader, I now know that I should have used the MF mineral based oil. I will soon change it again.
Here's the problem. The dipstick shows that the new fluid is that beige color when oil gets contaminated with water. I think that maybe the draining did not take out all of the fluid/water.
I am changing the shift lever boots as well.
The next time I drain this baby, how do I get the residual water out. Or doesn't a few ounces matter very much?

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Lee

05-06-2001 03:30:14




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 Re: Re MF35 Trans/differential in reply to Larry from NY, 05-01-2001 18:12:40  
The beige color probably came from the left over oil in the dif/trans. When I was home, we had a MF-50. The dif/trans came with 80-90 oil in it, the problem is in the winter it has to warm up before the hydraulics start to responed like in the summer. Just plain slow until you work it for a few hours.



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jt

05-04-2001 09:28:50




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 Re: Re MF35 Trans/differential in reply to Larry from NY, 05-01-2001 18:12:40  
What are you referring to as the 'Mineral-based oil'? I am about to change the trans/diff oil on a 1958 MF50 that I just purchased. The original owners manual mentions only using SAE 80/90 mineral oil. I asked the guys at the local MF dealership and they said that in the 'old' days they referred to it as mineral oil but that it wasn't any more. They also said that 80/90 was too thick to work in the hyd pump. I ended up buying Cenex QuickLift HTB (they said it was the same as Massey-Ferguson PermaTrans III Tran/Hyd oil but a little cheaper). Did I get the wrong stuff or is this the same as the 'mineral-based' oil that you're referring to?

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Larry from NY

05-04-2001 16:58:33




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 Re: Re: Re MF35 Trans/differential in reply to jt, 05-04-2001 09:28:50  
I have read about this 'mineral oil' in several posts on this board. Massey still makes the product referring to it as M1103. It is a 80/90 weight oil.
'Big Dean' Austin addresses the need for this oil in the older Masseys on his web page. Dean is the maven of Massey maintenance in these here parts. His URL is:
Link
As to the weight of the oil for winter use, I cannot really comment. I don't use my tractor in the winter here in the Catskills, but I start it every few weeks. The lifts arm operate at winter terperatures, but I haven't tried using it under any load.
Hey, I guess it was just as cold in the early 60's when MHF made these things and they worked then with 80/90. Why not now with all the global warming going on?

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Bob in CA

05-01-2001 19:58:10




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 Re: Re MF35 Trans/differential in reply to Larry from NY, 05-01-2001 18:12:40  
A little moisture in the oil won't hurt anything if you are using the tractor often. Some of this moisture will actually vaporize out over time with good hard use of the tractor. The problem will come when you let it sit for a period and the water settles out and causes rust in the cylinder and on gear surfaces. It is difficult to get all of the water/oil out but by getting the oil warm after a good hard use of the tractor and then jacking the tractor up in the back and tilting in various angles, you can get the oil out of the pockets and low points in the differential area. As long as you are changing the oil you may want to change the boots at the shift levers and also at the third link point. This should keep most of the water out in the future.

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