Crosman 140 not holding air

[Trunion]

My 140 stopped holding air. After a couple of pumps I can hear a low hiss at the end of each pump. I'm guessing I need to change the seals. I'm not familiar with multi pumps

 

[Treefrog]

The good news is that they're pretty easy to work on and parts are available. A search will turn the parts up.

Video -

Luck,

J~

 

[Trunion]

Thanks, I appreciate it.