Senco Accuset nailer A250FN

2 years 6 months ago - 2 years 6 months ago #1451 by Dee

I have a Senco Accuset pneumatic nailer model A250FN. It's over 10 yrs old but hardly used. As I was using it the other day it blew a valve seal. Problem is this part seems to now be obsolete. The part number is listed as B24013. Does anyone have a suggestion as to where I can find this part or repair this problem?

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2 years 6 months ago #1452 by MTR-Admin

Thanks for the post Dee,

Part# B24013 is the Firing Valve Piston, or the Head Valve itself. Is this what you need to replace, or is it a seal on this Firing Valve?

You're right in that the B24013 is obsolete with no replacement...your best best would be to contact Senco directly at 800-543-4596 and ask them for the number to a service center; a service center may have one or two in "dead stock" they may be able to sell you.

I wish I had more or better info, but I'd give the above a shot.

- MTR

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10 months 2 weeks ago #2192 by JohnArg

If you're willing to do a little work, I've found a way to rebuild the firing valve.

After a bit of hunting, discovered what's called machinable wax, which is a very hard and durable wax used in CNC machining applications. Got a free sample sent to me at no charge.

First, clear out all the waxy material that has broken up and caused the valve to leak, shooting air out the exhaust port. After removing the O-rings, set the firing valve in the oven at 275 degrees along with the wax (which was first shredded by drilling the sample block with a spade bit and placing the shavings in a glass ramekin). When completely melted, place the valve upright and carefully pour the wax into the recessed area. Allow to cool slowly. Using a straight edge, gently scrape the excess wax and finish by sanding with 100 grit sandpaper so that the face of the valve is completely flat and smooth.

Test fired 10 nails and it's working perfectly with no audible air leaking. Remains to be seen how well this holds up.
Good luck!!

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10 months 6 days ago #2197 by MTR-Admin

That's some excellent advice there JohnArg, thank you!! I'm sure people will find this very helpful, as have I.

- MTR

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1 week 4 days ago #2485 by tommy1

I have the same nailer and the gasket blew out part #B24013.
What I did is remove all the gasket material and than bought 2 part epoxy by gorilla glue.
Mixed it up and applied in the channel and raised it to approx same height as original gasket.
Let it sit overnight than replace the parts.
The gun works

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