Question about Senco Nailers

1 Answer

Senco stapler piston will not return & the bumper is like new

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

Not much to go on there. As the plunger makes it's attempt to return, is there an increase in exhaust pressure? What I'm getting at is that there should be 2 sets of O rings. One for downward force and one for upward. Are both sets sealed tight? Are they lubed porperly? Could the cylinder wall from which the plunger functions be warped or defected in anyway? I'm just throwing this one out there so please don't be offended...Are the O rings the proper size?

Posted on Nov 05, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

The driver pin on my sn 1v does not return


Easy to fix. Remove the head and pull out the cylinder. There should be an oring around a series of tiny holes drilled into the lower part of the cylinder. Replace the oring with any that will stay snugly in place. Also replace the piston oring with generic oring. The piston oring should just hold the piston in place in the cylinder with-out sliding down the cylinder under its own weight. Good luck

Jan 18, 2013 | Senco Nailers

1 Answer

My senco sps fires one staple, then hammer gets stuck forward.


If you've had and used the gun since 1998 and never rebuilt it, it's done you well indeed. If the driver is not retracting you most likely have broken or worn o-rings inside the cylinder. Senco makes a rebuild kit, part number YK0376. that contains all o-rings and wear items inside the gun. The kits run about $60 but your gun will be like new again. It's a relatively easy rebuild, just use lots of the Senco grease on the o-rings as you reassemble it.

Jun 05, 2012 | Senco Nailers

1 Answer

The problem i'm having is with a senco sn 41 stapler the driver wont fully return to the top


Hello try to put some oil in the connection of top and bottom may be this might help. please rate my comment

Nov 21, 2011 | Nailers

1 Answer

Model SHBN4. Piston does not withdraw after actuating to allow nail to come into position to be fired.


Piston does not return to top is caused by bent driver, worn lower bumper missing check valve or worn piston oring. Remove the head and pull out the cylinder and driver. Check the driver for bent shaft and that the piston/oring fits snugly into cylinder; make adjustment as needed. The lower bumper should not be cracked or missing pieces. Below the bumper is a seal that should fit snugly around the driver blade. Most all nailers have a check valve around the outer lower part of the cylinder. Could be oring or look like rubber band. This checkvalve will fit snugly over a series of holes cut into cylinder and causes the piston to return to top (not all nailers have this checkvalve). Lube all parts with silicone paste lube or nailer oil. Good luck

Aug 23, 2011 | Itw Devilbiss Nailers

1 Answer

My Senco SFN1 finish nailer will not shoot a nail. When the trigger is pulled air comes out but no nail is shot. Thanks,Steve L


Not sure about Senco but most have latch you can open to expose firing mechanism. Nail sometimes gets jammed and will not allow driver to fire or if not nail push driver ****** all the way back into gun then see if gun will fire.

Oct 25, 2010 | Senco 2D0001N FinishPro2N1, 18 Gauge Brad...

1 Answer

My driver doesn't come back far enough to pick up the next nail


Many causes for this problem. Some things to check. Push the driver up by hand to see if it moves easily /hard. If hard, check for bent driver or dry cylinder. If it moves easily, check piston oring too worn and /or air could be leaking down past the bumper area. Most guns have very close fitting bumper or a seal below bumper. If too much air leaks down past bumper driver will not return fully. Check seal could be loose or broken. Remove cylinder and look for check seal covering a row of holes on outer/mid to lower part of cylinder. could be a band or oring and should fit rather tight. If ok only other parts to check are the headvalve and piston stop. Piston stop should not have cracks or missing pieces (piston stop slows/stops piston when it returns to top). Head valve should be well lubed. Good luck

Oct 03, 2010 | Nailers

1 Answer

I have a Senco Accuset nailer - #A125B None of the 1 1/4 nails from Lowe's will fit, they are all a little off. The box says they fit 'any' nailer. Am I doing something wrong?


try a contractor supply, or find a senco distributor in your area, there used to be one in my hometown of Hayward, Calif. Tey carried fasteners for all models.

Sep 22, 2010 | Senco 2D0001N FinishPro2N1, 18 Gauge Brad...

1 Answer

I need a piston stopper for a Apach nail bradder dos any one no if you can still get parts for this tipe of nail gun


you might try going to Nailgundepot.com for the part. Be sure to have the model number handy, if this doesn't work let me know and I will try and find another source

Jul 08, 2009 | Senco 2D0001N FinishPro2N1, 18 Gauge Brad...

1 Answer

Senco narrow crown Stapler Piston will not go back


There is a spring and piston in the back cap of the nailer, this must be free moving and not sticking. If it is sticking it will cause the problem you discribed. If that looks ok you probably should install an o-ring kit and that should solve the problem. A Senco service center will carry the proper parts.

Apr 09, 2009 | Nailers

1 Answer

Trigger asembly broke ned new one senco model#03501710


Check for authorized Senco retailers or repairers near you and they will be able to order one in for you. www.senco.com

Mar 01, 2009 | Senco 2D0001N FinishPro2N1, 18 Gauge Brad...

Not finding what you are looking for?
Nailers Logo

Related Topics:

128 people viewed this question

Ask a Question

Usually answered in minutes!

Top Senco Nailers Experts

John Trevino

Level 3 Expert

1378 Answers

yoopertech

Level 2 Expert

121 Answers

Matt Olenzek
Matt Olenzek

Level 2 Expert

286 Answers

Are you a Senco Nailer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...