1958 801B Case-o-matic fuid

Jake1991

Member
So. This is my first time on the website, and first time posting on a forum. About a year ago, I purchased a 1958 Case 801B tractor with the case-o-matic. I am finally getting around to working on it after it sitting for almost a year because right after I bought it, we bought a house that required some remodel. Anyways, after scouring websites, forums, manuals, and consulting with mechanics and case dealerships, I am thoroughly confused as to what type of fluid should be used in the torque converter housing. I know it holds 4-5 gallons, and is separate from the transmission unless your seals leak. The fluid I took out smelled like regular gear oil and was a silvery/black with bits of fiberous material in it. I bought the tractor for 1500 bucks, with the only things really being wrong with it: a few darkened/not working gauges, missing rear clamshell fenders, a WORE OUT water pump, the linkage for the injector pump was a little messed up and when you tried to shut it off it still popped and grunted so you had to open the compression release to get it to shut down, and the pto dragging a little when it was not engaged. I am working through the small problems and getting it cleaned up to be a in service show tractor. I DO NOT WANT TO MESS UP THE CLUTCHES IN THE CASE-O-MATIC. Anyone that owns one, works on them, or has extensive experience with this transmission, ANY AND ALL HELP WOULD BE GREAT! I am mechanically inclined, but this is my first tractor. By the way, still learning all of the abbreviations, so if you are going to abbreviate, put the full word before or after. THANK YOU!
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The case-o-matic, or com, uses auto transmission
fluid. I think any pink trany fluid is ok. Some use
case Hytran fluid in it, but that is a bit thicker
and can cause a little gear grinding when cold.
 
This what was recommended then, myself I Highly recommend using CNH Hy-Tran oil, make sure you at least clean the COM filter and better yet replace it, I would flush the housing some with dsl as well if it were me from what you found in it,
cnt
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Type A automatic transmission fluid is what you put into the torque tube. Used to be able to buy in a five gallon bucket or even a fifty five gallon drum. I don't know why Case decided on the type A fluid though. There might be a modern substitute for it, but I don't know what it would be.
 
Thank you guys. I have the operators manual that has that page in it. As for any pink tranny fluid, should type F be used? What about fluids with detergents? Will that cause the glue to come apart on the wet disks? And I have heard of using Type A, but it is no longer offered. I have read that type A is now the Dexron ATF?
 
(quoted from post at 21:48:57 02/21/15) Thank you guys. I have the operators manual that has that page in it. As for any pink tranny fluid, should type F be used? What about fluids with detergents? Will that cause the glue to come apart on the wet disks? And I have heard of using Type A, but it is no longer offered. I have read that type A is now the Dexron ATF?
I just did a search and also found that Dexron ATF replaces the old type ATF. That's what I'd use.
 
Jake

I use the NAPA equivalent of hy-tran for just about everything, though as John says, I do occasionally grind gears. I have also had the problem with the engine not shutting down when the throttle is shut off. You may have a weak spring, that is what I replaced to solve the problem. As for the PTO, get a manual and it will go thru the adjustment for that. I think the 800 was one of the best tractors ever built and that was a great price. Enjoy!
 
I have one of the 800 page service manuals on order right now. Hopefully it should be here soon. I think the injection pump linkage was out of adjustment, because it didn't seem to be moving back all the way, so I adjusted that, and will see when I get to start the tractor again next time I guess. When you guys say the hy-tran will cause gear grinding in cold weather, how cold are you talking? I am in the pacific northwest, and I think the coldest it has ever really gotten around here for any extended period of time that I would MAYBE be using the tractor is the low 20's? And does that NAPA equivalent meet Case specifications?
 
I used CNH TCH fluid in mine because that is what the owners
manual said to use.The TCH fluid is still available , a little pricey but
you only need one 5 gal. bucket. My 2 cents ,Paul
 
I run dextron 3 in my 800 diesel. The filter is washable but should be replaced if it's damaged.
 
(quoted from post at 18:38:38 02/21/15) I run dextron 3 in my 800 diesel. The filter is washable but should be replaced if it's damaged.

1031. I have looked around and can not find that filter. Its the pipe shaped carbon like filter? The one behind the squareish cover with 4 bolts below the brakes on the right side right? The cooler line to the transmission comes out right below it? Thanks

Case Nutty. Thank you for the clarification. I was curious what the TCH stood for.
 
The filter is there, and looks to be in good shape. I cleaned it off good. There is no holes in it, and the ends are cut square. I have looked on all of the tractor sites that I know of and can not find that filter. Does anyone have a part number, or know of a dealer/website that carries it? Whenever I call the case dealer, they say they can not look up parts from that long ago, unless a I have a part number, then it is a maybe.
 
I can get you a part # for it,,, the dealers you call are too lazy to look as they are on the computer parts catalogs,, I clean them in clean gas if yours is intack like you say and not embedded with metal you should be fine, will post you back a part # if John or someone else does not beat me to it
cnt
 
Just to clearify for a greenhorn. You have listed instructions for a 730/830. The 800 will have hydraulic oil behind the rear end in it's own reservoir.
 
(quoted from post at 15:45:51 02/22/15) Just to clearify for a greenhorn. You have listed instructions for a 730/830. The 800 will have hydraulic oil behind the rear end in it's own reservoir.

DKase. I have the correct manual for my tractor. I do know that those are two different reservoirs, and the capacities are a bit different for the transmission/hydraulic system. We were mainly discussing the case-o-matic fluid requirement. Thank you though for clarifying. That is something that I did just learn here a few weeks ago.
 
So I called up to the Case dealer today to make sure they had the TCH fluid in stock. The guy I talked to said they did, and I don't know if he was just trying to be nice and save me a buck, or what, but he was almost insisting I didn't need to spend the $95 for a five gallon bucket of the stuff. Still planning on it, but I was directed toward this, and thought I would see what you guys thought. Like I said. Still planning on buying and using the Case TCH unless persuaded otherwise. Really don't want my wet disk clutches in a wet mushy pile of fiber from the glue coming undone.
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I do not see listed model numbers of the tractors so assume that is a general equivalency chart and not specific to tractors.

It is interesting that each of these other oil companies do not have an equivalent to Case Hy Tran Ultra.
 

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