You should know, there were many and I say many versions of the Tokheim, tall and of course the short ones you are asking information for.
Start here, http://petrolianacollectibles.com/tokheim%20pumps.htm]
Now click on the model you have.
Now if you post just what 39 model you have, the guys will give you the answer you need.
Incidentally, I have over 12000 images of pumps shown on this section of my website, many with information like that at the top of the 39 page, enjoy.
Author, Gas Pump Identfication books 1st & 2nd Editions & Air Meter Identification books
We rebuild ECO air meters and sell parts.