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766 water problem

K

kennell

Member
Last winter my 766 wouldn't have power steering when the temp was below freezing. This summer i replaced the transmission lock seal, and put a new rubber around the PTO lever. I put new hytran and filter and thought my problems were solved. Last weekend it was cold and again no power steering until it ran for a hour.
Where would the water be getting in? I can't afford to run the tractor for an hour at half throttle every time i want to use it.
Any help would be appreciated. Kent
 
We had a 656 when I was a kid and each fall, we had to pull the drain plug and dump out the water so it did not freeze up. Dealer said it was condensation from our humidity. Dad finally put in a plug like the H or M use for checking engine oil level, making it easier to shut off.
 
Will the water be at the bottom of the rear end. Can i drain off the water and leave the hytran in there? Which plug would ti be best to take out? Thanks Kent
 
Are you sure that the problem is water? On my 806, in the cold, my steering will not work well for a half hour or so. I have been told it is usually a problem inside the MCV. A few older guys in my neighborhood have told me that all of these tractors were this way... Someone will probably correct me. I have heard that making a short hose to connect the hydraulic outlet together and turning it on to flow oil and warm up the hydraulics will help. I know for a fact that last winter I used it to run a log splitter, and by the time I was done the steering worked the best it ever has since I have owned it in the winter. I am not certian that the hose will help, but I will be finding out in the next few days, as the winter parade is Saturday and snow will be coming soon... By the way, I am quite certian that I do not have a water problem, as I have changed the hy-tran multiple times in the 5 years it has been mine and have not gotten any water out of it. You also need to remember that the same pump that runs the steering also provides flow to the TA... If water was frozen up and oil could not flow your tractor would not move.
 
HyTran is designed to absorb up to 3 percent water and keep it in suspension. That keeps the moisture from collecting on gears and bearings and causing them to rust. the downside is that in sub freezing temperatures this water will freeze to form ice crystals that will not go through the filter or bypass screen. Since the water stays suspended in the oil you can't just drain it off the bottom to separate it.
 
Look in filter cover, if you can, before you start it, if Hytran is creamy color, drain it & replace it all, takes about 17 gal, it is made to hold some water in suspension, if its overloaded it will turn creamy color, normal color is a caramel. No place leaking, it is normal condensation.
 
Another thing, running pump with out flow through it sure does not do that pump any good. If you pull the filter out after a minute or two of running and it is full of slush you know water is the problem. Like Owen says, HY tran will hold a lot of water without seperating out. I never was convinced that was a good atribute but IH sure thought so.
 
You can only drain the water after the tractor has been sitting for about a day at least.And it has to be warm enough so the water in the tranmission isnt froze. The best time time to do that is in the spring or in the fall before it gets cold. The best place to drain it is at the very bottom of the tranmission. Just loosen the plug and let it out slow until it turns to oil.
 
try this, allow it to warm up for a few minutes, then work the steering wheel left to right and right to left 10-12 times.
We had a 1066 like that years ago, never could find anything wrong with it though.
 
I can drain the oil on my 2606 about a quart at a time with a gallon ice cream container under it. I can't get a big bucket underneath. Leave your top and side plugs tight and filter housing still on. It will drop a quart or so and then gulp for some air. Plenty of time to stick the bull plug back in if you don't hold it too far away or drop it in your bucket.
 
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