my first thing i would do a tissue test for breech seal leaking and

February 7 2018 at 7:54 PM
michael wolfram  (Login marflow)
YF


Response to HW70 help

if you get a leak replace the breech seal and rechrono

here is a great write up and give you numbers to shoot for

https://www.pyramydair.com/blog/2013/04/beeman-hw-70a-air-pistol-part-4/

here are the part numbers

https://www.dropbox.com/s/10bn62dpd859275/Wihrauch_HW70.pdf

the breech seal is the same used in most of the rifles if compare the part numbers at T.W. Chambers

the end cap has a grub screw on the bottom

short pistol springs don't take a much of a beating so that is more then likely ok

rebuild info hard to find like you say, I keep looking


    
This message has been edited by marflow on Feb 7, 2018 7:56 PM


 
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