Pump ID

[Rustyiron]

I was rooting through some old crates of my stuff and found a few pumps, yes I am a self admitted scrounger and have a hard time saying no to free. This is a Eaton pump with a number on it that is no help so far (5082188)
It appears to be either rebuilt or unused. As you can see, it's pretty small. There is a larger return? port & 2 smaller (A&B) ports. It also has the Cessna name cast into it. Any ID help would be appreciated.

 

[medic0648]

This is the only info I could find on cessna pump serial/model numbers. Havent been able to find any info for eaton pumps other than they use a 5 number and 3 letter model number. http://www.knighthawksupply.com/cessnapumpid.htm