View Full Version : Sticky Trigger
05-18-2005, 02:18 PM
I need a little guidance please.
My 3 year old Handler 175 has an irritating habit of spitting out a couple of extra feet of wire when I complete a weld. I can quickly squeeze and release the trigger a few times and it will stop. It doesn't do it everytime...but often enough to be a pain in the butt.
I have taken the trigger out and removed a few small weld BB's, which helped, but it still does it from time to time.
Is there a better way to clean the trigger? Contact cleaner or something? I would like to conserve my wire a little better than I can now. :)
Any help would be appreciated.
05-18-2005, 02:35 PM
Contact cleaner and some grease maby?
05-18-2005, 03:55 PM
You need to figure out if it's realy the trigger, of if the contactor's sticking. If your trigger is releasing, and the machine continues to run, it could be the trigger switch, too.
The next time it happens, let it run and disconnect the gun trigger cable from the front panel. If it keeps running, the trouble is inside. If it quits, replace the trigger switch. You can always rewind the wire.
05-18-2005, 08:20 PM
I hate to be the bearer of bad news, but I suspect its the trigger and that it is only going to get worse. Unfortunately, the 3-year warranty doesn't apply to the gun, only to the power source. The gun was under a 90-day warranty.
I had the same problem with my MM175 trigger. Did the same trick just recommended to confirm that the problem was on the gun side, not inside the box.
I tried everything under the sun to reverse or correct it and it just got worse and worse. It eventually became uncontrollable. I even took the trigger completely apart and it was dirt simple. It appeared to originate with the wiring leading to the trigger inside the gun itself; couldn't get to it.
I got a sweet deal from a Miller Rep who exchanged the guns for me, despite it being out of warranty, and everything was perfect again.
05-18-2005, 08:53 PM
Nothin like having a rep that knows which side his bread is buttered on.
05-19-2005, 03:32 PM
I appreciate the replies.
I think I'll make a trip to Radio Shack for some electrical contact cleaner, and give it a squirt...with the trigger out of the gun and unplugged of course. We'll see what happens.
Worst case scenario, I fry my trigger and have to replace it, which ought to fix the problem anyway.