Question about Stanley Bostitch 18 Gauge Brad Nailer 1 - 1/4IN - BT125K - 2

1 Answer

Bostitch 1850BN will not cycle. Had a piece of a brad get hung up and the piston was stuck forward. I took it all apart to remove the hung up piece of brad and free the piston. I'm afraid I didn't pay close enough attention when I removed the piston with its rod as I notice when replacing it that the driver chaft has a flat side and the oter side has a ridge down the middle. I didn't notice the rod broken or bent but after reasembling it the nailer will not shoot. I removed the piston rod and turned it over and it functioned about 4 times but didn't drive the brad deep enough and it quit working again. The piston seems to want to hang up and not cycle again. I'm not sure as to how this all goes back together as I also noticed that the metal cylinder with the plastic housing is not round and that the position it goes into the housing makes the cylinder so as not to be in a straight line with the housing. I couldn't find any marks that line up so I'm afraid I don't really know how to reassemble it so as to line it all up. The gun worked great prior to getting hung up and me trying to repair it. Now, it either will not shoot a brad or it hangs up every time.

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  • Anonymous Mar 22, 2014

    I have a nr90gc which won't re cycle I've stripped it cleaned everything and checked for any damage / bent parts the piston and push rod are free moving but it still only fires once and won't recycle could it be the piston bump rubber gone hard?

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Check the link below for directions to a website that has complete diagrams. I suspect that a seal may be damaged and the air is not flowing correctly. I would first examine all of the orings. Also, using the diagrams as a guide, check for proper movement by hand while the gun is partially dis-assembled. Update this if you have further questions.

Dan

Link: http://www.fixya.com/support/r5812776-bostitch_nailgun_dis_assembly_assembly

Posted on Oct 01, 2010

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1 Answer

How do I clear a jam?


Hi Gary:
SAFETY FIRST! Disconnect from air supply.
Pull trigger to make sure not "loaded"
- Here's what I would do.
1) Open magazine and remove stick of remaining nails
2) Try to remove jammed nail with pliers, pointy tool, etc.
3) Use allen wrenches to dis-mantle head until everything comes apart and jammed nail falls out.
4) re-assemble, cleaning and oiling at the same time.
Once done, re-connect to air supply and test.
Hint. A 2 inch nail can take some effort to penetrate, especially a knot in hardwood. Make sure you are using adequate pressure; that is the high end of the recommended pressure.
Cheers.

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1 Answer

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