Question about Hitachi NV45AB2S Coil Roofing Nailer
I have a hitachi nv45ab that was in desperate need of new o rings. I bought the kit and a service manual and followed step by step replacing every o ring in the gun. Now when I plug in the air line the gun just blows air out of the exhaust port. Its not a small leak it just blows all the air right through the exhaust. I have taken the gun back apart 3 times now and still come up with the same result. I do have one o ring left over from the kit its numbered 9 in the service manual valve o ring. It is supposed t sit on the head cap but there was no o ring there when I took it apart. I have tried to put the o ring in but do not see where it would go. And every place I have tried does not make a difference. I have another working gun but I am affraid to take it apart to look if it has the o ring in it. I dont want to have two guns that dont work. Please help.
This probably is the problem,
The cylinder that the piston moves up and down inside is probably to low, and not making contact with the rubber piece in the head cap.
The cylinder has a spring that allows for movement up and down, take a pliers and gently pull up the cylinder if it does not move freely on its own. It will stop when it reaches the cylinder plate ( the part with 2 screw holes for easy removal). Be careful not to mar the cylinder though.
When reassembling the cylinder should make contact with the head cap. Hope that works!
Posted on Apr 23, 2009
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 11, 2014 | Tools & Hardware - Others
Jan 23, 2013 | Hitachi Air Tools & Compressors
Jan 23, 2013 | Hitachi Tools & Hardware - Others
Jan 22, 2013 | Air Tools & Compressors
Feb 23, 2012 | Stanley Bostitch Stick Framing Nailer...
Oct 28, 2011 | Stanley Bostitch Nail Gun
Jul 09, 2011 | Stanley Bostitch Nail Gun
Oct 25, 2010 | Hitachi Tools & Hardware - Others
Jan 21, 2010 | Hitachi NV45AB2 Roofing Coil Nailer
Jan 20, 2010 | Hitachi Air Tools & Compressors
2,208 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: