20 Most Recent Stanley Factory Reconditioned Bostitch U/RN46 1 1 3/4" Coil Roofing Nailer Questions & Answers

The air leak can be one of a few things. FIrst make sure that you have added some pneumatic oil to the air stream. This will lubricate the o-rings and make a tight seal. If that fails to resolve it, repalce the o-rings. (kits available for around $20). Next, woul dbe the trigger assembly itself. These triggers wear over time and are easily replaced.

See the website below for parts and a good diagram of the construction of the gun. You should be able to replace the parts by following the diagrams.


Please note that the exactmodel number is required to get hte correct diagram.

Hope this helps,

Stanley Factory... | Answered on Jul 27, 2016

The Bostitch rn46 is a very good nailer however suffers from the problem that you are experiencing. Easy to fix. Remove the nails and connect to air pressure (100psi). With side door open and trigger depressed, cycle the gun against old coiled rubber hose or soft wood. As you cycle the gun, check that the feeder is moving back and forward with speed and the driver is moving down then up again. If the feeder seems to move in slow motion back and forth the air passage that feeds air to the feed piston is restricted or oring/spring to feed piston is worn. If the feeder moves very fast then suspect worn driver oring. To check driver oring, remove nails and air supply and leave open side door. Point nose of gun up then down to see if the driver seems loose and is moving up and down the cylinder. When the driver oring is good, the driver will stay at the top of the cylinder. If the driver oring seems ok and the feeder moves very fast then suspect feeder spring weak or missing. I usually find that debris from lower bumper and driver piston oring shavings have entered/clogged the air passage to feed piston. Replace parts as needed. Good luck.

Stanley Factory... | Answered on Feb 21, 2015

try taking the nose apart and look for obstructions. oil with some 3-in-1 oil and that should do the trick. if not - you'll need to take the body apart. there should be a spring in there that returns the driver needle back to starting position.

Stanley Factory... | Answered on Oct 18, 2014

if u are right nails for gun,then make sure when u put coil in and feed in front of firing pin the nails are straight with pin and connecting wires are not bent causing nails to fall out of alingnment.

Stanley Factory... | Answered on Jun 30, 2014

Adjust the air pressure on the regulator to about 90 lbs. or lower. maybe higher than 90 but that should help you set the depth.

Stanley Factory... | Answered on Jun 06, 2014

Try adding some transmission fluid to the air inlet. Just a little squirt in the air nipple. Try the gun, if it doesn't work it may need a new o-ring kit. they are relatively easy to replace. Also make sure the allen head screws are tight. These hold the body of the piston assembly against the seals. If air is leaking from this area the gun will not shoot. The seal rebuild kit comes with installation instructions.

Stanley Factory... | Answered on Apr 22, 2014

Going strickly by what you said above, it sounds like you put it away 'dry'. If you are not going to use a nail gun for an extended period of time you should lube it well with pneumatic gun oil and fire a couple nails to distribute it throughout the gun. When you take it out of storage, put a little more pneumatic gun oil in it and fire some nails to get it well lubed again and blow out any excess oil. WD-40 is OK on the exterior of the gun as long as you blow off any excess after spraying it on; never use it inside the gun. The problems you are experiencing now are indicative of broken or damaged o-rings inside the head. Some of the o-rings act as seals and some act as valves. There is also a rubber bumper at the bottom of the cylinder. When the driver hits the bumper it is pushed back up by the rebound off the bumper and assisted by air pressure. If one or more of the o-rings are damaged the air isn't directed to the proper place to make these things happen. Bostitch makes a rebuild kit for your gun. It's part number RN-46RK. You can find them on several on-line after market sites and should cost around $30 to $35. Use all of the parts in the kit and you'll have a gun as good as new.

Stanley Factory... | Answered on Oct 10, 2013

This happens quite a bit with nailers. There are is an easy method to attempt repair and more difficult procedure. There is some hammering involved, so to protect the head you must remove it and the cylinder and place the gun on a piece of wood with noise up. I use a piece of allen wrench as a punch (any good hard steel that just fits in the nose will do )and a large hammer. You must be very carefull about pieces of metal flying as you hammer metal on metal. My hammer is made of copper. Several swift hammer blows will free the driver. The quick and easy way is to hammer without removing the head. Most stuck nails are removed this way in the field due to time involved in taking the gun apart. Either way you choose, there is a chance of breaking something. Good luck and be carefull.

Stanley Factory... | Answered on Sep 18, 2013

there are detailed instructions on my profile page under tips. and unless you damage the old ones no you don't have to replace them. Let me know if you need more assistance.

Stanley Factory... | Answered on Feb 26, 2013

neither one, could be a jammed nail or an o ring issue, check for the jammed nail first and if not let me know and I will try and help.

Stanley Factory... | Answered on Aug 29, 2012

yes ,should be on head of gun,if not try turning air preasure up.

Stanley Factory... | Answered on Jul 26, 2012

Look under the latch for debris or the check feeder pin is pushed up out of place not letting the latch close. Push the pin down into the retaining oring that fits into a slot below the check feeders. If the retainer oring is split, it will not hold the pin down.

Stanley Factory... | Answered on Nov 01, 2011

Bostitch was purchased by Dewalt. You can not find manuals at the Dewalt link below.


Stanley Factory... | Answered on Nov 01, 2011

Gun will not fire if air is leaking past orings in head /headvalve or safety /trigger is not pushing trigger pin all the way into trigger valve. Test: Remove trigger to expose trigger valve pin. Remove nails. Place nose of gun against thick rubber mat or coiled rubber hose to absorb blow of driver. Very quickly and deliberately press trigger pin all the way in. If gun fires, safety foo or trigger is not pushing trigger pin all the way in. Make adjustments or replace worn parts. If gun still does not fire, remove head and pull out headvalve. Apply lots of silicone paste lube on the orings and the surface of the head where orings make contact. Reinstall head and test as above. If the gun fires then orings were leaking. Replace orings and sand any scratches on body of cap with very fine sand paper. Parts are at www.toolpartsdirect.com Good luck

Stanley Factory... | Answered on Mar 17, 2011

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