Tools, Sharpening and Power Machinery - Bostich Finish nailer N60FN
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hvac01453
05-07-05, 05:17 PM
I was wondering if anyone might know why my finish nailer is malfuntioning. I bought it 15 years ago and finally got the chance to use it. I ran it at about 80PSIand on the 5th or 6th window casing it started to leak some air around the trigger. I have a large capacity of air so I kept on using it and it started to misfire after about an hour or so. Then I remembered to oil it. I added about a quarter teaspoon of oil, to which I'm sure it would blow out any excess as stated in the manual. I ended up having to remove the top 4 screws that hold the exhaust cover on to manually pull the drive pin up and it came up without incident. It seems to me it has no air to drive the head back up to the lock position....Now I'm just assuming this....any ideas. The gun fires the pin down but doesn't return. I inspected the drive pin and it's straight. I even pushed it down and up with a plier from the top before replacing the head cap back on. I'm thinking the air leakage around an obviously bad o-ring is the cause but I'm just guessing.
GregH
05-08-05, 08:34 PM
hvac01453,
What else have you got around there growing old gracefully? :D
Here is a link (http://www.bostitch.com/default.asp?TYPE=STATICLEFT&PAGE=tooldoc_results.htm&Left=left_tooldoc_results.htm&partNum=N60FN&serialNum=) to the Bostitch site that has info on your nailer.
There is a parts list, schematic and owners manual that may have what you are looking for.
What else have you got around there growing old gracefully? :D
Here is a link (http://www.bostitch.com/default.asp?TYPE=STATICLEFT&PAGE=tooldoc_results.htm&Left=left_tooldoc_results.htm&partNum=N60FN&serialNum=) to the Bostitch site that has info on your nailer.
There is a parts list, schematic and owners manual that may have what you are looking for.
IBM5081
05-08-05, 10:27 PM
In 15 years of non-use, it's probably time for a set of O-rings. If the tool has been subjected to heat as well as age, the O-ring material has likely hardened (fails to seal even with oil present) and cracked (leaks air at these points).
The tool is probably worth rebuilding, the O-ring kit is not that expensive and you can probably perform the rebuild yourself if you have the wrenches and sockets to open up the tool. Start with the seals for the piston and those around the cylinder area.
Running the tool without lubrication probably aggravated the tired seals, causing greater leakage of air.
The tool is probably worth rebuilding, the O-ring kit is not that expensive and you can probably perform the rebuild yourself if you have the wrenches and sockets to open up the tool. Start with the seals for the piston and those around the cylinder area.
Running the tool without lubrication probably aggravated the tired seals, causing greater leakage of air.