123 hydro question

[hoosier cub]

I'm in the process of putting my 123 back together and among the maint. things I want to change the trans fluid and filter . I have looked in the manual and couldn't find where to drain the fluid or refill. Anyone want to help a newb out ?

[nra1ifer]

At the rear of the tractor you'll see a plate held with 7 bolts to the rear of the differential. There is a gasket between the plate and the casting. To drain, loosen the bolts (they are about 3/4"-1" long), then wedge the plate off and let the fluid drain into a large drain pan. The hydro/trans has 7 quarts of fluid when full. You can either make your own gasket out of gasket material (like from NAPA), or buy one through a parts source. As for fluid, Case/IH Hytran Ultra is what you'll find recommended here. Once the new gasket is on and the cover replaced and tightened, add fluid through the plug that is about 3" down from the top of the cover. A 3/8" ratchet will fit in it.


Here's a picture I took of my 123 when I had it apart this summer, and a .pdf file of a tracing I took of a new gasket. Can be used to cut one from gasket material:

[_DX3_]

Oh dang, I wish I had known earlier today you had a pdf of the gasket. I ordered a new one this morning for the 128 and that sucker was $18. Think I'll tell them to keep it. I have gasket material on the shelf waiting to be used. Thanks for the post.

[nra1ifer]

Originally Posted by _DX3_

Oh dang, I wish I had known earlier today you had a pdf of the gasket. I ordered a new one this morning for the 128 and that sucker was $18. Think I'll tell them to keep it. I have gasket material on the shelf waiting to be used. Thanks for the post.

You're welcome. I figured it would come in handy some day.

[hoosier cub]

Thanks for the answer and the template, I really enjoy working on this old dog. It's built so much better than the Porsche that I restored last year !

[nra1ifer]

Originally Posted by hoosier cub

Thanks for the answer and the template, I really enjoy working on this old dog. It's built so much better than the Porsche that I restored last year !

You're welcome, also!

And, welcome to the forum!

[Mizar N68X]

YES!!! Gaskets are rediculisly priced.

[Methos]

Originally Posted by nra1ifer

At the rear of the tractor you'll see a plate held with 7 bolts to the rear of the differential. There is a gasket between the plate and the casting. To drain, loosen the bolts (they are about 3/4"-1" long), then wedge the plate off and let the fluid drain into a large drain pan. The hydro/trans has 7 quarts of fluid when full. You can either make your own gasket out of gasket material (like from NAPA), or buy one through a parts source. As for fluid, Case/IH Hytran Ultra is what you'll find recommended here. Once the new gasket is on and the cover replaced and tightened, add fluid through the plug that is about 3" down from the top of the cover. A 3/8" ratchet will fit in it.


Here's a picture I took of my 123 when I had it apart this summer, and a .pdf file of a tracing I took of a new gasket. Can be used to cut one from gasket material:

Is that the same gasket for a gear drive? (like my 122)

Thanks for uploading that!

[nra1ifer]

Originally Posted by Methos

Is that the same gasket for a gear drive? (like my 122)

Thanks for uploading that!

I believe it is.... someone correct me if I'm wrong.... but the gasket I traced was IH-350837-R2.

[Diz Jr.]

nra1ifer
Thanks from me too.
Thats a great pdf.
I just made me a couple of copies on photo paper. It will make a nice template.