Question about Porter Cable RN175 Roofing Coil Nailer

1 Answer

I have a Porter Cable RN175 Roofing Nailer that has had light to moderate use. It is regularly oiled and cleaned. The nailer frequently stops feeding nails to the piston. When this occurs the guard shield must be opened, the next nail on the coil is moved into the piston chamber, the guard is replaced and the nailer will fire correctly....for at least several nails before is repeats failue to advance the next nail. Any suggestions?

Posted by on

  • chaley10 Oct 25, 2010

    Thanks for this info, however, in the past, I have changed nail brand with no success. Also, have sprayed the nails with WD40...with no success. Any other suggestions?

  • chaley10 Oct 25, 2010

    Solution ideas were very helpful. Thanx!



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Porter Cable Master
  • 5,603 Answers

This sounds like it might be a problem with the nails themselves. Have you tried another brand? If the place you got the nailer is nearby, ask them about the problem. Also look if the carrier strip MIGHT not be clearing and preventing the advancement of the nails. I would also try a light spray on the coil of CRC226 available at Home Depot in the electrical dept.

Posted on Oct 24, 2010

  • Fred Yearian Oct 25, 2010

    You have done all the right things I suggested, the next step is to understand where the force to advance the nails comes from.
    Here is an exploded view of one model of a Porter cable:

    Look at parts around #400 to 415 as these are the feeder.

    If ever the unit has been allowed to dry out, the O rings in this feeding piston MAY be damaged.

    First thing I would do is to take the back cap off this little piston and flood it with oil, reassemble and cycle several times.

  • Phoenix  Repair
    Phoenix Repair Nov 23, 2010

    please before you flood it with oil (just to cover the real problem) inspect the feed pawls and make sure the little feed spring is still in place. They fall out and that will stop the gun from advancing the nails like you suggest. As for the dry out theory, if you oil your gun it will transfer the oil to all moving parts unless blocked.



1 Suggested Answer

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

My porter cable roofing nailer rn175 type 1 it fire's and the rod stayed out and air comes out what part do I need to fix

Could have check valve out of place or broken. Easy to check. Remove head and pull out the cylinder and the round cylinder spacer. Look for black band that should have been covering small holes just below the cylinder spacer. Replace band if broken or if good install the cylinder ring on the cylinder then install the band and finally reinstall the assembly into gun. Look for any broken/cracked parts in the head of the gun. Good luck

Aug 28, 2013 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Porter cable roofing nailer piston won't retract

Could be the check-band around the cylinder. Easy to check. Remove the head and pull out the cylinder. There should be a rubber band covering a series of pin-holes drilled into the cylinder. Usually the band will fall out of place or break. Use any rubber that will stay in place to cover the holes. Good luck.

Oct 16, 2012 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Gun shoots one nail, driver does not return Porter Cable RN175

Internal damage - most cause by wearing parts
Bring to the repair shop

Oct 02, 2012 | Porter Cable Coil Roofing Nailer

1 Answer

Using a Porter Cable RN175A and it stopped working.

for technical service (888) 848-5175

866-375-6287 their number

Sep 06, 2012 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

My RN 175 roofing nailer (porter cable) fires like a machine gun. I cleaned the trigger valve assembly and replaced the o-ring at top of the asembly. Still fires in high repetition.

With most nailers there is a safety device that has to be depressed as you press the gun against the work that is being nailed. This safety device might be damaged or jammed in the firing position allowing the gun to act like an automatic.

Mar 14, 2011 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

I just found our old RN175 and wonder if I should and where it needs to be oiled before use?

put about 6 drops of air tool oil in the fitting and then plug in and shoot some nails to relube the o rings. Let me know if you need more assistance.

Nov 09, 2010 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Air is blowing from the top of the gun

Leaking from top is usually caused by the upper bumper (part #886113). This vinyl part will begin to crack/crumble causing improper seal. Order bumper only or overhaul kit #903789 that replaces most parts in gun. Order from Good luck

Sep 18, 2010 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Air goes thru my Porter Cable RN175 and out the muffler

I would replace them all. Check the inlet Valve/fitting too.

Feb 03, 2010 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

Cooil nailer will drive one nail but piston will not return

it sounds like it needs a thorough cleaning to remove the asphalt and new o ring kit installed. The o rings are probably dry or worn and won't retract the piston, also look at the feed piston to make sure spring isn't broken, but I would clean and rebuild, its not that hard if you are handy with tools.

Nov 07, 2009 | Porter Cable RN175 Roofing Coil Nailer

1 Answer

My slide hammer on my roofing nailer won't return. It will lay one nail and stick. This nailer is my life line. I need help!

hopefuly it just needs some oil, but if mechanism is worn out from lots of regular use( like if you are a pro roofer) you will need to replace parts. but check for excess play, metall burrs, dirt and make sure its oiled.

Aug 26, 2009 | Porter Cable Cable RN175AR Reconditioned...

Not finding what you are looking for?
Porter Cable RN175 Roofing Coil Nailer Logo

Related Topics:

374 people viewed this question

Ask a Question

Usually answered in minutes!

Top Porter Cable Tools & Hardware - Others Experts

John Trevino

Level 3 Expert

1420 Answers

T bone 1963

Level 2 Expert

70 Answers


Level 3 Expert

2591 Answers

Are you a Porter Cable Tool and Hardware - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides