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Keep getting water in rearend, where's it coming f

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Bobg

04-26-2005 06:58:10

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When I brought my Dad's 49 M home after 15 years of no use and sitting outside I changed the rearend fluid. Now after 3 years I need to change it again since it is milky. It sat in the barn every winter except last, barn was full of hay, it won't sit out another. I figured the only place water can get in is on the bolt recesses on the top. I put gasket sealer under the bolt head and washer hoping this will seal it up. Does anyone have any advise or gone through this?

Any help appreciated.

Bobg

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Bob M

04-26-2005 08:44:38

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

If your weather is like ours (frequent wild swings in temperature and humidity) condensation builds up rapidly inside engines and transmissions - even when stuff is always shedded. This is especially true for equipment that is used lightly or infrequently and doesn't get hot enough drive out accumulated moisture.

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captaink

04-26-2005 08:42:06

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 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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Hugh MacKay

04-26-2005 08:21:42

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

Bob: Others are right, the water will get in around gear shift lever, transmission top bolts and condensation. Just to give you and example, I quite often left Farmall 300 out over night in busy season. If one leaves mufler uncovered one night in heavy rain, there will not be enough watter down the stack to adversely affect the engine. One night My 300 was left out with exaust pipe loose in manifold. Mufler had a tin can over it. Enough water ran down the mufler and pipe to fill two cylinders plus the manifold with water. Water will run down the gear shift lever much the same way. I never like putting hot tractors away in building for night. If one is going to burn, it may as well be one tractor only and without the building.

These old tractors weren't built water proof, and in those days very few people ever left them outside, other when working them every day. Tractors that are working everyday will evaporate a lot of this moisture.

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Joe Evans

04-26-2005 07:50:04

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

Ah, yes... the good ole IH operator platform sieve. They're bodacious leakers-in of water. Best to keep them shedded if possible. Water infiltration was the ruination of our 460's hydraulic system in my opinion.

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Sloroll

04-26-2005 07:24:11

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

You get more condensation in that cast than most people realize too.

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Charles Park

04-26-2005 07:23:16

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

Also water can be from condensation. Hot and cold and hot and cold, the housing will sweat and produce moisture. Same thing with the gas tank on a tractor or boat.

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RustyFarmall

04-26-2005 07:15:38

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

The water will also find it's way in around the shift lever. I don't have any good ideas on how to stop that.

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El Toro

04-26-2005 07:06:31

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Re: Keep getting water in rearend, where's it comi in reply to Bobg, 04-26-2005 06:58:10

Water has a way to enter a gear box when it's exposed to the weather. It will also get into your fuel tank and into the ignition. The best way to prevent this is to keep it sheltered that has a good roof. Water can also get into the crankcase on your engine. Hal

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