I recently had the rear main seal replaced in my Cub (I have no room to do this job). I got it back and everything seemed great until I tried the touch control. It wouldn't move. I finally put some weight on the fast hitch and it reluctantly went down. Then it reluctantly went up. I checked the fluid and found it to be a quart low. I added the proper amount and began working the hydraulics again. It got a little better but still very jumpy. Sometimes I still have to push it down but it seems to come up ok (although it's still jumpy). Is there air that needs to work out of this system? Is there possibly something that could have been missed when the tractor was put back together? This is my first Cud so I'm not real familar with things. Any help would be appreciated.
Something wrong with the touch control
- Thread starter NewCubGuy
- Start date
As Thomas said, cycle it rapidly 10-12 times to get the air out. You may then need to add more Hytran, but do it with the piston retracted or you can overfill it.
I did cycle it with the fill plug out but only a couple of times. It must take this system a while to work things out. Everywhere I read said to just use 80/90 gear lube so that's what I put in it. Should it be something different? Didn't think it would matter on these old systems. I filled it with the lift down. I read somewhere that that was the way to do it.
I’ve never seen anyone suggest putting 80/90 in hydraulic unit on a cub. Hytran or its equivalent is the way to go. I would think 80/90 would be on the thick side, especially in cold weather. I have used 10 wt non detergent oil before, which was originally called for in early units but then IH came up with their own fluid
Don McCombs
501 Club
Don’t forget to drain the gear oil from the manifold tubes between the pump and the TC block.
Hi,
Case IH Hy-Tran fluid is thin hydraulic fluid. It is sold at Case IH dealers.
There are other brands, be sure it works with IH hydraulic systems before buying one.
The Cub operator's manual tells how to check and change the fluid, and remove the air from the system.
Check the fluid with the arms in the rear, or down position, the manual says.
The fluid rises in the system when the arms go the rear position. If you fill it with the arms ahead, it will have too much fluid in it.
Below is a page from the 1955 Cub operator's manual telling about checking or changing the fluid.
IH changed the name of the fluid to Hy-Tran fluid after this manual was made.
The page tells how to drain the fluid from the Touch Control tubes.
Paragraph 4 tells about removing the air from the system. The arms should go through their full travel 10 - 12 times.
https://farmallcub.club/rudi/farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Cub%20Owner's%20Manuals/McCormick%20Farmall%20Cub%20Operator's%20Manual%2012-20-55/Page%2064.jpg
Last edited:
And probably have to change it twice to get most of the gear oil out of the system.
Thank you. Very helpful.Hi,
Case IH Hy-Tran fluid is thin hydraulic fluid. It is sold at Case IH dealers.
There are other brands, be sure it works with IH hydraulic systems before buying one.
The Cub operator's manual tells how to check and change the fluid, and remove the air from the system.
Check the fluid with the arms in the rear, or down position, the manual says.
The fluid rises in the system when the arms go the rear position. If you fill it with the arms ahead, it will have too much fluid in it.
Below is a page from the 1955 Cub operator's manual telling about checking or changing the fluid.
The page tells how to drain the fluid from the Touch Control tubes.
Paragraph 4 tells about removing the air from the system. The arms should go through their full travel 10 - 12 times.
https://farmallcub.club/rudi/farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Cub%20Owner's%20Manuals/McCormick%20Farmall%20Cub%20Operator's%20Manual%2012-20-55/Page%2064.jpg
So I drained all the fluid from the system (including the tubes as directed) and refilled with hy-Tran. I got nothing. Back and forth way more than 10 - 12 times and it ain’t moving. Was working sort of with the other oil. Question, is there a separate fill for the touch control unit itself or does everything fill from the one plug?
Dale Finch
501 Club
One plug...upper left side of block toward rear.
Oh, that’s a fill plug? No wonder nothing is happening.
Below is a page from the 1955 Cub operator's manual, showing the parts of the Touch Control system.
You didn't say what plug you are using to fill it, or the year of the Cub.
The Touch Control system fills from the 1 plug on the left side of the unit.
The Touch Control holds 3 1/2 Pints of fluid. That's less than 2 quarts.
There is no plug for the Touch Control by the seat.
The plug to the rear of the gear shifter is for putting oil in the transmission.
The trans does use 80W-90 gear oil.
If the Cub is a 1958 or newer, the operator's manuals say to use Hy-Tran fluid in it, or the manuals say you can use 80W-90 gear oil.
The trans holds 3 1/2 Pints also.
The trans oil filler plug is just to the rear of the shifter.
The trans oil level plug is low on the left side of the trans. Fill it only to there.
The trans oil drain plug is at the bottom of the trans, visible from under the platform.
Last edited:
Don McCombs
501 Club
It’s time to think about acquiring some manuals for your new Cub. I recommend the Operators Manual, Service Manual and Parts Catalog. The best source is BinderBooks.com .
Agree
I have no serial number tag but, strictly going by the grill, I believe it to be a 1955. Just a guess. Yeah, I think I was given some bad intel. I was using just the plug behind the shifter. Thought it all worked together as I have some other tractors like that. So, so this evening I’ll get that fluid draining from the transmission and rear end and fill it again with 80/90. I may have to get some more hy Tran for the touch unit. Bear with me, I can be taught.