Is it possible that some models of the 1066 does not have a transmission fluid filter?? Because on mine higher up and further forward in front of the brake pedals sits my battery. I have searched all over the right side for any canister type housing and only find the flat plate with two wing nut type bolts holding it on, which I assume is the regular hydo fluid filter.

The filter under that cover is your one and only hydraulic oil filter. It filters all the oil for all functions except the pto.

DOWN on the right side (passenger) side towards the bottom ahead of the right axle housing is a tear drop shaped cover with a cap held on by to bolts with wing nut style heads . Place a bucket under it unloosen the two wing nut bolts and twist the cap and wiggle it off . You should only loose about a gallon or so UNLESS someone has over filled the rear end then ya may loose more . I do believe you need and owners manual as you need to learn about your tractor .

TV,Max is talking about a HYDRO 1066.He cant find the transmission filter(see the posts below).Max,does the tractor have a cab? if so,the filter(housing)is hidden behind the right front cab mount.My 826H,1026,and Hydro 100 were as described.

LEFT side of the tractor, lying horizontal, just in front of the MCV.

Allan

Max,From your post below indicated(or so I/we assumed)That your tractor is a Hydro.If it just a common gear drive,it will not have the "transmission filter".Only hydrostatic tractors had the additional trans filter.

OK, I am relatively sure it is a hydro tranny, it will not move (clutch will not work) and I have no power steering when it is low on fluid or gummed up with ice crystals. I am trying to remedy the ice thing now. Yes DeltaRed, it does have a cab but I still can't find the filter you are talking about, it is just not there . Allan you say it is on the LEFT side laying horizontal, is that an exterior filter ie spin on type? If so there is NO filter there exterior or interior. MN Scott I tend to agree with you that the one filter is a do all one, but.....I don't know Jack about this tractor, lol. I am SOOOO confused!! Tractor Vet I agree with you I DO need a book, but things in my household are sort of tight at this time, and honestly I just can't afford to get one at the moment. As my dad always said, "Poor people have poor ways".

Sounds like your not 100% sure its a hydro.How many SHIFT handles are there 2 or 3.You will either have 1 on each side or 1 on the left and 2 on the right.

If it has two shift levers on the right, it is a gear drive and the belly filter needs changed like T. Vet says.

Allan

Allen your good at photo's so if your out by your tonka toys next time take a good detailed picture of the dash are on your 1066 then take a couple shots of just where a GEAR DRIVE hyd. filter is . Now in this area there was only ONE hydro ever sold and it was a 1066 and The guy had so much trouble with it he bad mouthed it up one hill and down another. None were sold after that around here. Myself i have never bought a hydro or for that fact ever worked on one . Everyone that i ever saw at a sale was in the dead row marked BAD HYDRO and we let the salvage buyers have them .

It has two shift handles on the right side as you are setting in the seat. It is an H pattern (for reverse)with a high speed, low speed, reverse and the far right handle is 1,2,3,4 speeds.

You have a gear drive tractor. There is only one hydraulic filter, located down on the passenger side just in front of the axle. Two nuts or wing nuts, cover pops off and filter pulls out.might loose a quart or two of fluid.

Is it below freezing where you are? If so then you need to drain the fluid as well. It's not moving because the MVC (?) pump is freezing up. That's the pump that controls the steering and clutch assist. Hytran fluid from CNH is the proper fluid. It absorbs water over the years and freezes the pump up when it drops below freezing. I can't tell you how much it will take off hand, maybe 15-20 gallons.

Casey in SD

So, if it has the two handles on the right side it is a regular gear drive right? That would clarify why there is only one filter, the one on the right side. Sorry guys for the confusion but everyone around here locally is telling me that it is a HYDRO. Does the clutch work off the hydraulic system also? Because it will not move when it is iced up or low on fluid. It does have another handle on the left side but it seems to be locked in one position, I do not even know what it is used for.

Handle on the left side is the T/A. It's like a two speed power shift. It reduces the gear your in by 33% to help pull through a tough spot so you don't have to stop and shift.

Casey in SD

Most likely reason it will not move when "iced" up or low on fluid, is that the TA is shot in low range (which is driven through a mechanical sprag and does not require hydraulic pressure to pull tractor) and the high range in TA needs hydraulic pressure to lock up the direct drive clutch pack.
Another confusing thing I see on here all the time is people referring to the hydraulic system as hydro . I like to keep the two words separate as to hydraulic systems and a hydrostatic drive. Less confusion.

Is there some sort of additive that could be used to dissipate the water that collects? It gets below freezing quite often and this year it has started the not moving and no steering, but this is the first year it has done it. To drain the fluid do I take the plugs out of the rear end, there are three on the bottom. I have the filter out and am going to get a new one tomorrow. It is Case HI #528493R3.

The tractor seems to run good when it is above freezing or colder weather and like I said the shift on the left (TA) seems to be stuck in one position and has been ever since I have owned the tractor (five years)and the guy I bought it from didn't know what the right shift lever was either, lol. I have had very little problems with the tractor outside of batteries etc. You are saying the TA is stuck in low range?? Would that be the most forward or most backward position? The TA is driven through a mechanical sprig? (spring?)Is that easily repaired?

The proper hydraulic fluid is called Hy-Tran and it absorbs the water. Problem is it can only absorb so much and after so many years it gets "full" and needs to be changed out. That's why we are all saying drain it and fill with new.

Casey in SD

Ahh, no , it would be stuck in high range. From your explanation I read into, maybe incorrectly, the tractor will not move when the hydraulics are not working, is that correct. Well, high range, TA lever forward is hydraulically activated so if you have no hydraulics you will not have high range. And if your low range is worn out the tractor will not move when you have no hydraulics because high range requires fluid to lock up the TA high range clutch pack. If your TA low range was not worn out the tractor will move without any hydraulics at all. As I indicated, the low range is mechanically driven with a sprag. A sprag is a one way clutch (like used in a solenoid activated starter drive). So, if it is worn out it just slips, no drive. When you say froze up I take it to mean you have not power steering or power brakes also. As the mcv hydraulic pump is hydraulics for the tractor controls, steering, TA, brakes, clutch booster if it has one and lubrication of power train, when it is not working for what ever reason, you have no hydraulic assisted controls. Your aux hydraulics like hitch and rear outlets may still work as they are a separate pump but draw through same filter so might not work either. Depends on what the problem actually is. I would speculate that the TA lever is locked in the direct, high, position because the low side is worn out. The TA (torque amplifier) is just a two speed, shift on the go addition in front of a gear drive transmission. It is a wear item, just like a clutch of any kind so they "wear out". Lot depends on the use it gets and maintenance items like oil changes etc. Haven't cured any of your problems but hope I helped you understand a little better how things work.

Max,Can you afford to fix $500-$1000 or more repairs just you cant "afford a $30.00 book?The book will SAVE you money.It will be the cheapest,most usefull thing you will ever buy for your tractor.BUY ONE! Service manager in local IH dealership once told me: "They wont spend $5 for a raincap for the muffler.But they will sure as he!! spend $5000.00 for a new engine when it rain water in the stack." Good advice.

Right the tractor will not move when it is low on fluid and/or it is frozen, ie below 32 degrees. I assume the frozen part is condensed water in the fluid and filter. A couple of times it has run low on fluid and the same thing, will not move, but....bucket will lift and tilt, three point will lift, power take off works, but no clutch or steering. It all works always when there is fluid and it is not freezing cold. I got an air lock a couple of times when it ran low on fluid, I overfilled it about four or five gallons and it picked right up and started working. I have owned the tractor for four or five years and have had very little other problems with it. Old and slow but does the jobs I need it for. I have the filter out and am getting a new one today. Hope that will solve some of the problems as it was pretty stopped up. Should I go ahead and drain the fluid completely or just pull a plug and test to see if any water is in the rear end?? It has been setting for about a week now and I would think that most of the water should be settled?? And.......trust me you have been a great help, hope I can keep picking your brain!! Thanks.

Extremely difficult to get all the water out of hydraulic fluid, especially HY-tran as it holds some in suspension. So, if oil is milky looking after setting you will need new oil. Of course, with the price of oil, a couple new filters might be well worth a try to see if it still bothers. Those paper filters get soft from moisture and really make it tough for oil to flow through.

The fluid that came out when I took the old filter out was very clear, looked new. I have had several leaks,now fixed, in the past year, so the fluid is basically new. The filter did seem to be plugged up pretty bad and soppy so maybe the new one will do the trick. I did see some drops of what I am sure was water came out also. So guess I will check the plug in the rear end and see if I get traces of water there before I crank her up again. It is nice weather here now, in the 6o's but......it is supposed to turn cold again this week end. Again, thanks so much for the help, may call on you again.

Message: Sorry to bug you again but....I was just curious where you buy your parts for these older IH tractors. I did the filter change on this thing but did not change the gasket and now I have an annoying leak around the filter cap. By the way, the filter did take care of the not moving, everything works but the bucket lift is jearky and very slow until it warms up good. I picked up the filter here at a NAPA parts house but they did not have the gasket, I was in a hurry and a long way from home so I decided to just chance it.....but it did not work. Would a tube of gasket seal work Appreciate your help. Max