HyTran in SC tranny?

Thu Jun 13, 2013 1:23 pm

Manual says gear oil. Did IH ever change this to HyTran?

Re: HyTran in SC tranny?

Thu Jun 13, 2013 2:55 pm

I don't know if they did. But I think Hy tran would be to thin. The newer seals are a lot closer tolerence than 50 years ago. I would use regular gear oil.
Last edited by Cecil on Thu Jun 13, 2013 4:17 pm, edited 1 time in total.

Re: HyTran in SC tranny?

Thu Jun 13, 2013 3:13 pm

I believe they did, in later 240's and then 404's, because they cut a hole in the top of the torque tube and changed the HydraTouch block to reach down into the transmission housing for a larger oil reservoir.

On an actual Super C, though, gear oil is it. With Hytran you will be complaining about the transmission noise.

Re: HyTran in SC tranny?

Tue Jun 18, 2013 1:10 pm

If I stay with gear oil, then the problem becomes one of availability. The only gear oil I can find is GL1 and GL5.

Re: HyTran in SC tranny?

Tue Jun 18, 2013 2:56 pm

Tom I use GL 5 in all my machines.

Re: HyTran in SC tranny?

Tue Jun 18, 2013 5:51 pm

Thanks Cecil. That's what I've been using, but I've seen posts on different forums stating that GL5 is harmful to yellow metals. I don't know if there is any yellow metal in a SC tranny, but there is in a cub tyranny

Re: HyTran in SC tranny?

Wed Jun 19, 2013 6:49 am

I believe I have seen it changed in the later manuals. I think the manual that came with my 71 reads that you can use either one. I will look and see if I can find it.

Re: HyTran in SC tranny?

Thu Jun 20, 2013 8:03 am

Pretty much around the time they introduced HyTran they listed it first in lubricants section of the manuals. Could be to increase sales or because later transmissions also served as the hydraulic 'tank' like the number Lo Boys?

http://www.farmallcub.info/manuals/prev ... e%2007.jpg