Question about Porter Cable FR350A Factory Reconditioned 3 1/2" Round Head Framing Nailer Kit, 70 120 Psi
Not a common problem with this gun, however here are some things to check. Assuming no air leaks. Bent driver, worn piston oring, dry cylinder, check valve ring not in place or loose and head valve/piston-stop issues.
Push piston/driver with rod to top position (remove from air supply) and notice how difficult to push. If very hard, check for bent driver, dry cylinder or oring too tight. If very easy and piston drops back down with light tapping of nose against wood, oring too loose. If feels about right and piston does not drop down with tapping, suspect check valve or head valve/piston stop. If check valve was in place and snug, driver not bent and oring good /cylinder lubed, pull head valve and check for cracked piston stop or lack of lube and valve hard to push and does not readily return (push in headvalve with thumbs should move in about 1/4 inch and return) .
Check valve ring (897387) is a rubber band on outer part of cylinder covering a row of holes and is what causes piston to retract. The band should fit snugly on cylinder and in proper place. Sometimes this band slips off groove and falls to bottom of cylinder. Lube gun with silicone paste sold at Lowes in the plumbing department and parts at www.toolpartsdirect.com or dewalt service center. Good luck
Posted on Oct 07, 2010
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Posted on Jan 02, 2017
SOURCE: driver wont retract
check to make sure the head bolts are tight on the top, if they are it probably needs a rebuild kit from campbell housfield includes orings for the piston, gaskets ect. and instructions
Posted on Feb 13, 2009
sounds like time for a rebuild i do this once a year on all of my guns i buy a seal kit and replace them at that time and oil the interior oparts and check for worn or broken parts
Posted on Sep 03, 2009
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