Repairing, tuning and tuning parts for CAS
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Tips & Help

(This may only be a short version. A longer version may be found in Cowboy Chronicle. http://www.sassnet.com/Downloads/15eChron/15janchron.pdf, Written by Larsen E. Pettifogger)

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Shotgun Boogie Trigger Kit - Uberti 1873 Trigger Kit - Buy Now

Includes 9 pieces

  • Upper trigger
  • Lower trigger
  • Washer ( instead of the flat safety bar spring )
  • New safety bar spring
  • New trigger spring
  • New pin
  • Three (3) screws, metric M3.

 

Hexkey 1.5mm needed.

Cut a piece of 9mm from the old trigger/sear pin. This you can use as a slave pin for much easier installing. 

Uberti 1873 Trigger Kit - Buy Now

Before you start using loctite or nail polish for all three screws, play a little bit with the trigger group and adjust trigger kit in the lower tang.

When you have the lower tang out, disassemble all trigger parts including springs. Leave only the safety bar in the lower tang. Then set the screws with loctite or nail polish. If you look from front to back, lowest screw is the trigger stop backwards. Right screw trigger stop forward. Middle and shortest screw play between the two parts. Assemble trigger. After that, please build safety bar spring in. Now the trigger spring and washer ( the screw press washer on the spring ). 

One screw is the trigger stop forward. This screw must be adjust from behind. It is the first screw you have to adjust. The safety bar must be able to come out of the frame, but no play on the trigger.

Next step is to adjust second screw, the play between upper trigger and lower trigger. At that point the third screw for trigger stop backward must be complete inside the trigger! Otherwise, you can’t reach screw Number (2).

Take care that hammer is NOT going down when pulling trigger. And when pushing the safety bar into the lower tang, like the closed lever is doing, the trigger may not move backwards.

 

Next step is to adjust second screw, the play between the upper trigger and lower trigger. At that point, the third screw for trigger stop backward must be complete inside the trigger! Otherwise, you can’t reach screw number 2.

Take care that hammer is NOT going down when pulling the trigger. And when pushing the safety bar into the lower tang, like the closed lever is doing, the trigger may not move backwards.

At last, adjust third short screw for trigger stop backward.

At first adjust the trigger stop forward, that the safety bar just can slip behind the trigger, without play.

Uberti 1873 Trigger Kit - Buy Now

Then adjust the play between the two parts, that the hammer stay in cocked position, when safety bar is behind trigger and you pull trigger. When you push the safety bar into the lower tang (like the closed lever do),  trigger does not have to move. Then adjust trigger stop backwards to the shortest possible way of trigger.

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How to install a Ruger Short Stroke Kit - Ruger Vaquero Short Stroke Kit - 

  1. Disassemble the Ruger completely
  2. mark the recoil plate carefully. You need it for assembling 
  1. start to punch out the cross pin with starter
  2. when it is loose, take a longer pin and punch the cross pin complete out.
  3. punch the firing pin out, while the frame is in a vice. Use aluminum brackets to protect the frame
  4. Change the firing pin spring and assemble the firing pin, spring and recoil plate. Check the marks on the recoil plate, that they are in line. Use the long rod through the barrel to hammer the recoil plate back in its place. 
  1. File the burr inside the frame away, otherwise, the hammer sticks here.
  1. Grind or file material like the purple line shows, NOT only the edge in 45° ! So more material you take away, so earlier the hammer stop / latch is coming out. 
  1. Change all springs into the tuning springs.
  2. Assemble all. You can start with latch and trigger, or with hammer and pawl.
  3. Hammer strut must be shortened a bit, that you have room enough to adjust the hammer stop screw.
  4. Hammer strut and spring can be the last parts together with hammer stop.
  5. Adjust the hammer stop.

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How to install a Ruger Short Stroke Kit - Ruger Vaquero (New and Old) Short Stroke Kit

 

  1. disassembly the Ruger complete
  2. mark the recoil plate carefully. You need it for assambling

 

  1. start to punch out the cross pin with starter

  1. when it is loose, take a longer pin and punch the crosspin complete out.
  2. punch the firing pin out, while the frame is in a vice. Use alu brackets to protect the frame
  3. Change the firing pin spring and assamble the firing pin, spring and recoil plate. Check the marks on the recoil plate, that they are in line. Use the long rod through the barrel to hammer the recoil plate back in it’s place.

 

  1. File the burr inside the frame away, otherwise hammer sticks here.

 

  1. Grind or file material like the purple line shows, NOT only the edge in 45° ! So more material you take away, so earlier the hammer stop / latch is coming out.

 

 

  1. Change all springs into the tuning springs.
  2. Assamble all. You can start with latch and trigger, or with hammer and pawl.
  3. Hammerstrut must be shortened a bit, that you have room enough to adjust the hammer stop screw.
  4. Hammer strut and spring can be the last parts together with hammerstop.
  5. Adjust the hammer stop.

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Ruger Disassembly