Issues with my Hobart 135 - Team Camaro Tech
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post #1 of 5 (permalink) Old Feb 21st, 10, 09:32 PM Thread Starter
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Matt
 
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Issues with my Hobart 135

I was welding on the car today and it got interesting a couple of times...
Seems the trigger (or something) gets stuck while welding, causing the wire to keep feeding even without a finger on the trigger. A few extra clicks on the trigger will eventually stop it.

Would it be a faulty trigger or something on the wire feed unit itself?

Matt

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post #2 of 5 (permalink) Old Feb 21st, 10, 11:05 PM
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Thumbs up Re: Issues with my Hobart 135

Yes, a faulty trigger.
There is a micro-switch under the plastic switch trigger cover.
You can pull the cover and check the switch to be sure no dirt or debris is in there, add a very little bit of lube ( I often use something like 'Chapstick' ) on the switch pivot areas and then reassemble.
Should be good-to-go for another couple hundred pulls ...

The switch assembly isn't expensive if you do need a new one.
Many welding shops may have it or can get it.

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post #3 of 5 (permalink) Old Feb 22nd, 10, 08:55 AM Thread Starter
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Matt
 
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Re: Issues with my Hobart 135

Thanks John. I'll take a look at the switch tonight.

Matt

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post #4 of 5 (permalink) Old Feb 26th, 10, 04:50 PM
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Jeff
 
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Re: Issues with my Hobart 135

Quote:
Originally Posted by Vintage 68 View Post
Yes, a faulty trigger.
There is a micro-switch under the plastic switch trigger cover.
You can pull the cover and check the switch to be sure no dirt or debris is in there, add a very little bit of lube ( I often use something like 'Chapstick' ) on the switch pivot areas and then reassemble.
Should be good-to-go for another couple hundred pulls ...

The switch assembly isn't expensive if you do need a new one.
Many welding shops may have it or can get it.

x2........I had a piece of slag get down inside the trigger and it was causing the trigger to not release. If I remember right I had to use a small pick to get it out and shop air to blow it out too....later that day I was also having problems with my wire balling up at the feed motor inside the machine. I don't think I have ever been so angry than the day I fought my welder for a couple hours before I realized the teflon sheath for the wire was junk. I replaced the sheath ( 2hour round trip to Praxair to get new part) and it worked like a dream again. I still dont know how I screwed it up but I was glad it was fixed.....


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post #5 of 5 (permalink) Old Mar 10th, 10, 05:15 AM Thread Starter
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Matt
 
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Re: Issues with my Hobart 135

Forgot to update this. Took the trigger apart and cleaned the inside really good. Things got better for a short while but it started to do it again. Took it apart again and stretched the return springs a little bit. That did the trick for sure as I've had many pulls since than with no issues. Thanks everyone.

Matt

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