Re: Keep getting water in rearend, where's it comi

Posted by captaink on April 26, 2005 at 08:42:06 from (66.115.214.56):

In Reply to: Keep getting water in rearend, where's it coming f posted by Bobg on April 26, 2005 at 06:58:10:

In addition to the water getting in around the gearshift lever, I would like to offer a thought on condensation particularly dealing with heating and cooling. As the air in the transmission warms, it expands and escapes through the gearshift lever tower. As it cools (usually overnight) it creates a vacuum and pulls air back into the transmission (evening air has more humidity than daytime air). Now, if the tractor is not run for a few days and the temperature outside falls to the “dew point” so will the cast iron. This will cause water drops to form on the inside of the transmission. These drops fall from the top or run down the sides into the grease, and unless sufficient heat is generated to evaporate it back out, will stay in there. The same principal applies to the inside of a steel building especially if the doors are left open on a foggy day and the temps fall overnight.

If you use heavy gear lube (80 or 90 weight) you can get most of the water out of the rear end without changing the lube. After the tractor has set for a few days, the water will have settled to the bottom of the rear end. Loosen the drain plug. As you loosen the plug water will start to seep around the treads and come out first. Depending on your patience and time, you can play with loosening the plug more or less and let the water out. When the water stops coming out tighten the plug back up. If you do this once a year, you will be fine.

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