Results 1 to 20 of 20

Thread: hard to cock pump

Hybrid View

  1. #1

    hard to cock pump

    Set-up:

    Rainmain 229 kit
    Luke's milled rail and body


    Everything works, and can cock and fire in pump mode, but it's really takes a lot of strength to cock. There is heavy resistance somewhere.

    If I loosen the bolt that attaches the Rainmain apparatus to the rail, then the pump shaft arm glides without resistance, but the whole thing is flimsy, and it doesn't cock.

    I tried a washer between the rail and pump back bumper, but then I couldn't get the pump rod shaft to connect with the bolt correctly and it wouldn't cock.

    Thank you for your thoughts.

  2. #2
    Join Date
    Feb 2011
    Location
    PHX, AZ
    Posts
    1,440
    any pics of the pump arm? or how you have it mounted?

  3. #3
    <a href="http://s1108.photobucket.com/albums/h406/Jonathan_Wyly_Prince/?action=view&amp;current=IMG-20120917-000163.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h406/Jonathan_Wyly_Prince/IMG-20120917-000163.jpg" border="0" alt="Photobucket"></a>

  4. #4
    <a href="http://s1108.photobucket.com/albums/h406/Jonathan_Wyly_Prince/?action=view&amp;current=IMG-20120917-000173.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h406/Jonathan_Wyly_Prince/IMG-20120917-000173.jpg" border="0" alt="Photobucket"></a>

  5. #5
    Join Date
    Feb 2011
    Location
    PHX, AZ
    Posts
    1,440
    any pics with out the body to see how the pump are sits in the pump slot? with the pump kit mounted to the rail the pump arm should sit in the pump slot and you should be able to move the pump back as if you pumping the marker? it looks like the pump arm is screwed into the pump handle pretty far tho...so you might have to adjust the pump arm length as well?

  6. #6
    Join Date
    Feb 2005
    Location
    #1 Buck Adams fan
    Posts
    7,925
    Does the bumper sit INSIDE the wave spring? It should. If it is behind or in front of it, it will make it very tough to pump.

  7. #7
    Join Date
    Oct 2006
    Location
    Houston, TX
    Posts
    3,205
    It's a tricky setup with three moving rods. I usually end up pulling everything apart except the pump kit and rail to find the binding points. You can hold the body on the rail and check the action after that, and work your way up to full assembly. Sometimes you have to bend the rod to get it set. It seems drastic, but it's hard to tell after you get all together.

    Make sure your bolt bumper is inside the spring washer, not full size and behind the spring washer. With an old bolt spring that is about the length of the bolt, you should just need a "tap" on the bolt, not a stroke.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •