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Advice stripping of a Webley Tri-pump with photos.

Discussion in 'Anything Airgun Related' started by sharpshooterpete, May 8, 2014.

  1. sharpshooterpete

    sharpshooterpete Donator

    Messages:
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    Location:
    Salisbury.
    Hello all,

    I posted not to long ago asking if anyone knew what could be wrong with my Webley Tri-pump...

    Well, i took mine apart to try and find a seal that may need replacing and whilst i took it apart i took some photo's of the process and what i found. I hope this helps someone at some point because i had actually stripped it a total of 4 times and found i could take it apart even further each time i did this.

    Here is a photo of the 3 'tubes' the black one is the obvious outer tubing, the next one up sits inside the outer tubing and the very top tube sits inside the middle one and screws into the base place (hopefully this makes sense) i will go into each one a little more.
    View attachment 95751

    At the bottom and top of the outer black tube is a locking nut/seal, there is also a similar locking nut/seal at the top. What i had to do with this was place the centre of the tube in a vice and undo the bottom and top nuts separately. (ignore the unscrewed nut at the bottom connecting to the pump base)

    View attachment 95755

    This is the top locking nut/seal. When you fully undo this one, pull it up slightly to reveal a thinner rod that runs through the centre. As you can see there is a small hole at the top of the rod, this goes inside the locking nut and is kept in place by a small locking pin. You need something quite small, roughly the size of a 2mm allen key to give the pin a bit of a tap, it should pop out quite easily. On top of this is also a black screw cap type thing (thats the official name ;)) which the handle connects to. I cant remember if there was or not but there may be a small o-ring in there but in my case the o-ring was fine.

    View attachment 95759

    Once the bottom and top nut/seals have been unscrewed the outer tubing can now be lifted off leaving behind what you see in the picture below. Again, i had to put this into a vice in order to remove it. Also, there is supposed to be a nut of an approx size of 15mm (i used an adjustable) which sits on top of the brass seal, i had removed this before the photo. If you just keep unscrewing the whole thing it will eventually come off leaving just the central tubing which has a thread either end. For me, it was so tight it actually unscrewed the seal as well as the tube and it came out as one. Yet again i used a vice to take it all apart. The 15mm nut i mention earlier... unscrew this from the top and you will find another small o-ring.
    View attachment 95763

    what it looks like on its own with the top nut removed and the o-ring inside.

    View attachment 95764

    the lower end of the centre tubing/screw type thing. As you can see mine was super corroded. It was fairly hard to get this b****r off.

    View attachment 95765

    The next stage was unscrewing the last nut connected to the pump base. To unscrew it fully i had to remove a very small grub screw underneath the gauge. This allowed the little spring operated nipple to pop out. If you dont take this nipple out you cant lift up the tubing. The grub screw was smaller than a 2mm Allen key (that was the smallest i had!) luckily i managed to just wedge a tiny screw driver in there and undo it just enough. Good ol' bodge job!

    View attachment 95766

    One you take out the tubing, flip it upside down and you will see another screw in nut. Undo this (be careful, it jumps out because of the spring its attached to) and it should come out with the spring connected and a smaller brass nipple which has another o-ring on it. For me this was the most corroded and dirty part of the pump so i gave it a good clean and replaced the o-ring.

    View attachment 95767
    close up of the seal.
    View attachment 95768


    Thats a rough guide of what i did. It doesnt take long at all to strip it apart to be honest. Just need the right tools (which i didnt have) and a vice helps a lot!

    unlucky for me, after stripping it all down, cleaning it and greasing all the seals. The pump still isnt working :/

    Any ideas on what could STILL be wrong!? I hope this helps some body :)

    Pete.
     
  2. ratman60

    ratman60 Pro Poster

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    Location:
    abingdon
    hello pete, i thanked you for this post even though it did not work your photos and time was good, i am sure it will help somebody here and hope you get sorted.
     
  3. wonky donky

    wonky donky Donator

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    Location:
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    Yes you didn't appear to replace all the seals, Top image, top insert has an inner rod with a pur90 4x1.5? seal...................did one just a couple of days ago & size escapes me, anyway this is the one to give trouble, sorry just can't remember the size but may have taken a photo, I will look. Can't see you have done it on your images anyway & you won't buy it off the shelf easy either.
     
  4. sharpshooterpete

    sharpshooterpete Donator

    Messages:
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    Location:
    Salisbury.
    I think I know the one you're talking about but not 100%.
    where about is it? From what I could see all the seals were fine but if I'm still having trouble It must be the one you're on about...
     
  5. sharpshooterpete

    sharpshooterpete Donator

    Messages:
    640
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    Location:
    Salisbury.
    I stripped it down again and definitely found every seal and gave it a good clean. it kind of works up to around 60/70 bar but becomes impossible to use past 70, can barely pull up on the handles :/ Im bringing it back to the shop i got it from and they will have a look for me, failing them fixing it, its going back to Webley for a service!
     

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