BM 710 Loosening Pivot Screw

R

Rallan

Joined
Sep 10, 2008
Messages
12
Hello All,

I'm new to this forum, and would have searched for the answer, but the search function is down... wondering if anyone could help me with this.

I recently purchased a Benchmade 710 in D2. When it arrived, it was super-stiff to open, and I could see a couple scratches on the hinge pivot torx screw where it had been tightened up. Since I live in Canada, it probably happened so that it would make it over the border and pass the flip-out test.

I used the proper tool to ease off the screw a bit, and now it's just a feathery light very nice opener.

However, I noticed that after a dozen opens, the screw keeps backing off even more, and the hinge starts to get sloppy. It's so loose, that I can actually move the hinge screw with my fingers at times.

Here's my question - I've never messed with taking a hinge screw out. Is it possible to remove the screw, add a dab of Loctite (the blue stuff) and screw it back in? Should I do that with the folder closed, or blade open?

Or, is there another better solution?

Thanks in advance!

Rallan
 
Using a dab of blue Loctite should do the trick. I've done that to my 710D2 and it seems to have settled down now. Might as well do it while closed, less chance it will bite you during the proceedure. :)
 
Be sure to just use a dab of the loctite. Use a toothpick to apply it and place it inside the pivot instead of on the screws. After you get it how you want it, talking about the action, set it down and let the loctite cure for 24 hours, otherwise you will have to do it over. Takes a #10 torx if not mistaken.
 
Or just steal some nailpolish from your SO, works fine as well. Just make sure, there´s no lube on the pivot!
 
Apply just tiny drop with toothpick. Once I put too much loctite to Rukus. Loctite goes away from pivot while tightening screw, then flow down to axis bar (between liner and scales, invisible for me). After short time axis bar starts sticking to liner. I have to disassemble the knife completely and wipe the extra-locktite.
 
Thank you all! I've done the Loctite thing, very carefully, this evening.

You've all been a great help.

Cheers
 
Word of advice. When you put the female threads through the pivot hole, you should make sure that there is not a bunch of lube lingering around the hole which could in turn get down into the female threads. Do one of two things.

1. Once you have the blade and washers aligned so that the female threaded barrel will go through smoothly, run a q-tip through the hole first so that excess lube will be wiped clean away.

2. Dont worry about the lube lingering around the hole, and make some kind of rubber "cork" type of thing to keep the opening of the female barrell sealed from excess lube. I did this method on my small sebenza where a q-tip was too big. I found a small plastic rod that was just small enough to fit in the threads. I used heat shrink tubing to get it to create just enough seal when inserting the barrell through. After the barrel is in place you can take the cork out and proceed with the blue locktite.

Peace.
 
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