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Airguns by Make and Model => Crosman Airguns => Topic started by: Motor62 on February 04, 2018, 09:33:46 PM

Title: Hard pumpin'
Post by: Motor62 on February 04, 2018, 09:33:46 PM
I've got a Benjamin Sheridan. 20 cal c9 that I purchased used, a few yrs back. It was hard to pump (1st pump and so on) from the start. Is that the way these are or is there something wrong with it?
Title: Re: Hard pumpin'
Post by: Longbow on February 05, 2018, 02:35:09 AM
I don't know...I have a new 392..the first pump seems very easy to me..but I have vavle mods and well over 5000 rounds through the gun...Also  I oil it,  a lot .. ;D


Title: Re: Hard pumpin'
Post by: Habanero69er on February 05, 2018, 07:56:14 AM
I've got a Benjamin Sheridan. 20 cal c9 that I purchased used, a few yrs back. It was hard to pump (1st pump and so on) from the start. Is that the way these are or is there something wrong with it?

Sounds dry. Was the rifle put away lubed & with a few pumps in it?
If not, you need to get yourself some Secret Sauce from Mac-1. Put 6-7 drops on the piston & pivot joints. Pump the rifle up 2 or 3 pumps, dry fire it to work the lube through the rifle's internals. Do this 3-4 times & then leave the rifle with 3 pumps in it & lean it up in the corner overnight. See if there's any improvement the next day. You can also use 30w ND motor oil in a pinch.
Title: Re: Hard pumpin'
Post by: Flint on February 05, 2018, 05:09:40 PM
First four pumps should not feel very difficult at all. 
Title: Re: Hard pumpin'
Post by: avator on February 05, 2018, 05:16:43 PM
First four pumps should not feel very difficult at all.
You'll definitely feel 5 and beyond. I know that the C9 I sold Hoosier Daddy was a beast.
Title: Re: Hard pumpin'
Post by: avator on February 05, 2018, 05:18:08 PM
Have you tried to fire it a second time to make sure it's not retaining air?
Title: Re: Hard pumpin'
Post by: Motor62 on February 05, 2018, 05:29:24 PM
I'll try give it the juice (oil) and see what happens. I hope that's all it needs.
Title: Re: Hard pumpin'
Post by: avator on February 05, 2018, 05:54:33 PM
Let us know.. The C9 is a great gun. A fine example of what Sheridan and Benjamin were able to jointly create before Crosman took the reigns into their hands. Crosman had bought into it by the time the gun was made but let them continue to build it before they put the "cheap" into the next generation.
Title: Re: Hard pumpin'
Post by: Motor62 on February 06, 2018, 07:03:57 AM
That worked! Great suggestion! Thank you!