Question about Stanley Bostitch F28WWMCN 28° Industrial Framing Nailer And Metal Connector Nailer Combo, 80 120 Psi
Assuming there is no air leaking from the gun, the check seal (part #175520) causes piston to retract. It is a band that fits around the cylinder and covers vent holes in cylinder. You can use orings in place of band (or be creative). Other reasons for piston not returning to top include bent driver, worn piston oring, or cylinder/ oring lacking oil. Good luck
Posted on Sep 05, 2010
Testimonial: "Excellent... You were right on the mark. That seal did look bad. Replaced all seals and now works fine! Thanks for your help!"
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Posted on Jan 02, 2017
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