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Old 09-10-2018, 12:21 PM
kingrj kingrj is offline
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3rd Gen Trigger Jobs 3rd Gen Trigger Jobs 3rd Gen Trigger Jobs 3rd Gen Trigger Jobs 3rd Gen Trigger Jobs  
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Default 3rd Gen Trigger Jobs

Well...I bought a 4506-1 almost 30 years ago and love the gun but hated the trigger. No big deal since it sat in my safe for years till I decided to start deer hunting with a .45 Super and the Smith was the only auto I had that I felt sure could take the pounding. Sooo...back comes the crappy single action trigger. Some experimenting lead me to believe that the majority of the problem was the crappy firing pin blocking piston. Sure enough when I removed it the single action trigger was immediately better and lighter! Problem was that every so often, not all the time, when the trigger was pulled in single action a "click" occurred just prior to hammer fall. I could probably have just lived with it but it was driving me crazy I had to find out what it was! The problem turned out to be the final (second) step of the trigger draw bar and the double action (second) hammer hook! Just before the draw bar finally moved the sear enough to drop the hammer it just "kissed" over the final double action hook on the hammer! That was making the click. Properly timed the draw bar should not even engage the hammer hooks when the hammer is manually cocked to the single action position but it sure enough drug during he 0.002 travel of the sear before hammer fall. I carefully reduced the second double action catch on the drawbar by about a 0.001" and that solved the problem in single action without effecting double action pull. I just wanted to share so others that might run into this problem will not pull their hair out like I did.
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