Hydraulic pump on Super A

[Richard G.]

I want to put a seal, gasket kit in our Super A.
This site shows 2 kits.
Thompson and Pesco.
How do I know which pump we have?
Thanks, Richard

 

[used red MN]

This should do it. Look at the areas the bolts tighten down against, should be able to tell by that.
CNHI Farmall Super A Hyd. Pump diagram

 

[crsutton81]

Richard my SA book does show where both the Pesco and Thompson pumps were both an option. The top pump in the picture, #1, is the Pesco brand. The bottom pump, #8, is the Thompson brand. Note the difference in the bypass check ball placement. The Thompson brand where my pen points is in a cutaway slanted base. The Pesco brand has a raised square boss area that contains the bypass ball and spring. That's the easiest way for me to externally distinguish the difference.

 

[Richard G.]

Thanks to both of you.
That makes it easy.
I did one several years ago and I guess I got the correct one by accident.

 

[crsutton81]

Most of the pumps locally here were Thompson brand. The IH dealer said he only sold parts 1 time for a Pesco in 55 yrs of business.