Frozen trigger adj screws (FWB 65)

[wasatch]

Recently I bought an FWB 65 only to find the trigger adjustment screws are are frozen. I tried a drop of penetrating oil on them but no luck. They are flat head screws so I'm concerned about applying to much torque and blowing out the slot.

Any tips for getting the screws to rotate?

Thanks!

[slofyr]

Recently I bought an FWB 65 only to find the trigger adjustment screws are are frozen.

Try Kroil. If an overnight soak with that doesn't free them, then possibly they have been secured with Loctite [!!]. Heating a screw with a soldering iron [which reaches about 450°F] should defeat resin thread lock. Shape the end of a pencil-tip iron to cover the screw head.

[PFribley]

I would try heat also. You have a steel screw in alloy. Got a heat gun???

[joel]

If the screw is indeed going into alloy, then you don't want to heat the screw, but rather the trigger block around the screw using a heat gun. Kroil is a good idea as well, but sounds like you've tried that. If it is a flat head screw, try using a hollow ground screw driver so that you get the most contact on the screw head. Definitely need to clean and re-lube after all that heat.

Good luck,

Joel

[Pat McCoy]

A good hollow ground screwdriver, as Joel said, and don't overdo it. Just torque it and hold the pressure. Torque is additive, so it will increase on the screw as you just hold it.

[SMC]

This may be a little late but it may help those who need it. A Junior that I was coaching (20 years ago) had a frozen trigger adjustment screw on an Izzy. My gunsmith placed the gun on a mat, supported the trigger from underneath so it wouldn't move or be torqued when the screw was pushed down. He was sitting at his workbench. He used a hollow ground screwdriver and pushed down with his chin while twisting the screwdriver. By maintaining serious down pressure with his chin he prevented the screwdriver blade from twisting out of the slot. I could see that it was a lot of effort to push down but the procedure worked.