Hi All.
I’ve got an oldish Bostitch coil nailer that appears to have a clogged trigger valve (or something). The trigger assembly is held by roll pins and look easy to drive out. Are these machines easy to disassemble/assemble and clean?
Thanks,
Scott.
Replies
I can almost guarantee that your problem is not with the trigger assembly, so don't remove that.
Start at the top and carefully disassemble the gun while keeping track of parts & o-rings. I like to dunk the guns in a parts washer and really flush them out while they are apart. Blow out with air.
Get the rebuild kit and reassemble one o-ring at a time. Oil as you go. It's not hard, but you have to be careful you don't lose or misplace parts.
Good thing you said almost, cuz ...nope. Its the green doohicky in the trigger that dies first. LOL
BTDT a few too many times. Drive out the drift pins and replace the trigger is the only fix.Spheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations
They kill Prophets, for Profits.
I must admit that I am surprised by that one! I have 3 N80C nailers and I have never had that problem with any of them. They have quit firing, but not for that reason.
Ok, Doods...here's the update.Firstly, Sphere, when I told my wife that you suspected a dysfunctional "doohicky", she immediately said, "Tell that man that I love him!!!!". I'll admit to kidding her about her ambiguous language, so she seized the chance to catch one of us at the same game. You've got a soul mate.Now for the technical brief: Sphere (and DI) were right. I removed the valve assembly (it was white in my case), stuck it in a bath of paint thinner and squished the shaft up and down. A considerable bunch of grit and dirt settled to the bottom of the container. (A crew has been using it this week and I suspect they've been dropping detached hoses in the mud....bad practice). Works fine now, though I'll pick up a new valve assembly soon.Thanks all....this kind of idea sharing is my favorite part of the Internet.Scott.
Whats she wearing? (G)Spheramid Enterprises Architectural Woodworks
Repairs, Remodeling, Restorations
They kill Prophets, for Profits.
If it's an older type trigger valve it will have a plastic shaft. Those shafts tend to wear down, the replacement is metal. If you can get it to fire by pushing the shaft up manually, but it won't fire with the trigger, it is the trigger valve that is bad. And they are easy to change.
My N80 coil nailer wore out the shaft, and I replaced the trigger valve. It, worked fine, till somebody swiped it.
Edited 3/14/2009 12:42 pm ET by Dam_inspector
I think you've hit the nail on the head (har har... couldn't resist). That's the exact symptom.Thanks all!Scott.
Go to this Bostitch site. Drop down to the model you are working on. You can print out an exploded view of your gun. Keep the parts arranged as in the drawing as you disassemble the gun. You can order o-ring kits for some, not all of the bostitch guns.
I agree that it's probably not the trigger.
http://www.bostitch.com/default.asp?TYPE=STATICLEFT&PAGE=tooldoc.htm&LEFT=left_tooldoc.htm