Need info on Crossman Mdl 140

[Montana Cowboy]

Afternoon All
I recently rebuilt a Crossman Mdl 140 .22 cal pellet gun. What I need to know is what number of times do you pump it to shoot it without over pumping it. This pellet gun is 45 years old so I thought some of you fellas might have had one or have an owners manual. Also, what type of oil does it use on the felt washer that is attached to the pump mechanism