Lincoln Jack ID?

[Graham08]

I have a Lincoln floor jack that I need to rebuild. It weeps oil and doesn’t get to full height under load. Is there a good way to ID whether I have a 93632 or 93642? Mine is identical to the photos I’ve found of both models. It came from the old Petty Enterprises NASCAR shop and they removed the original decals in favor of sponsor branding. I’ve attached some photos of it.

 

[Graham08]

I also found this sticker on the bottom with what I assume to be serial number and date of manufacture.