Question about Hobart Handler 140 Mig Welder

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Hobart 175 ,pull trigger relay clicks have 24 volts to motor ,but motor dont run take motor out and it runs great has torque ? put meter on motor leads with it hooked up and when pulled trigger voltage droped to near zero. any help appreciated . rca

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If the machine has diodes check them. Also if it has a bridge rectifier check it. My 120 would not feed wire and the bridge rectifier was bad.

Posted on May 18, 2010

  • Alan Lane
    Alan Lane Oct 26, 2013

    ok where do i purchase replacement parts. the only website i found just wanted to sell me welder and accessories

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1 Answer

I have a hobart Handler 135 and it won't feed the wire correctly. At first it will feed about 6 " of wire then it goes down to about an inch at a time then it will just click. If you wait awhile it will...


If you completely remove wire from unit does it still slowdown and stop when you pull trigger?
If yes, then 2 most common problems are
A. Thermistor @ position PTC1 on circuit board
B. Drive Roller Motor

To diagnose, locate thermistor @ position PTC1 in upper middle part of circuit board.
It's yellowish round and about 1/2" in diameter.
Jumper Accross the 2 leads, use a small insulated screwdriver or meter probe.


1. Pull trigger on gun, when motor slows or stops then jumper the leads, if it speeds back up then it's the Thermistor
Replace with a Raychem RXE 1.85A @ 72 v
Or comparable, try EBay

2. If no change, isolate motor by removing the 2 leads and connect a 9-12 volt DC battery source, does motor spin? If not then motor is problem. If motor spins and is constant then additional troubleshooting needed, next possible issues are bad resistor or scr

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Jun 06, 2014 | Hobart Handler 140 Mig Welder

1 Answer

Hobart 175 wire feed just clicks


Might have a tangle on the spool, making it difficult to turn. Or there could be a relay for the motor control that isn't making contact.

Apr 12, 2013 | Welding Tools

1 Answer

CLarke 130 en everything works Great except when I select # 4 on the heat then it won't feed when the trigger is pulled?


i put a new motor on the welder an i have 9 to 12 vote coming to the motor but the motor wont run all works but the motor

Mar 14, 2012 | Clarke Power Products Clarke 130EN...

1 Answer

Hello, I have a Hobart 180 and the wire feeder motor won't run. I replaced the wire feed motor and it still won't run. any ideas?


Sound like you have a bad trigger on the gun. Does gas spray when you pull the trigger? Check the wire plug that goes from the pistol to the unit. It should be under the liner hose where it connects to the machine. Then use a voltage meter on the wires going to the drive feed motor, and see if you get current when you pull the trigger. If gas doesn't spray neither, sounds like you got a bad trigger switch

Jun 27, 2011 | Hobart Welding Tools

1 Answer

My hobart handler 120 will not feed wire. took the feed motor off and tested. Its good. checked the trigger connections and they are both in good shape. The gas valve does click when the trigger is pulled....


First take our the spool of wire, then without any wire restriction, disconnect the gun from the machine and bridge the trigger connection, if the solenoid valve opens then the motor shoulod run. If it does, then check the trigger on your gun, take it off and bridge the cables, if it runs then your trigger switch is faulty.

Dec 28, 2010 | Welding Tools

1 Answer

Wire does not feed motor does not run worked on all connections and it ran for about 4 feet then quit crossed trigger to see if that was the problem and got no wire any suggestions?????


does everything else work? power light come on? fan? does the trigger click? seems like you've tested everything i would have tested. maybe the motor itself. its also possible that theres an open in the wiring to the trigger. i would take the trigger back apart and do a continuity test from the beginning of the wire to the connection in the trigger. check continuity on both trigger wires. the best way to to do that is using a volt meter on either the continuity setting or resistance setting zero resistance or infanite (depending on meter) will mean there is an opening and you will either have to fix it or replace it. if you dont have a volt meter you may also try arcing across the two trigger wires closer to the welder connection.see i had this problem before but it was a faulty trigger so im thinkin if it isnt the trigger (you said you tested it) then its the trigger wiring.

Dec 27, 2010 | Clarke Power Products Clarke 130EN...

1 Answer

I have a hobart 120 and it seems to short out when I pull the trigger, the rollers don't turn either. The unit just clicks


I'm not sure why you say it seems to short out. Does it trip the breaker? If the rollers aren't turning, but the tip will still arc, there is something wrong in your drive section. It could be almost anything from a bad drive motor to a bad switch in the torch (hand unit) to a bad controller. It will require diagnosing it with a voltmeter. Since it is clicking, the most likely thing is a bad drive motor as that click is probably a relay that is supposed to run the motor.

Dec 04, 2009 | Welding Tools

1 Answer

Relay clicks, but wire feed motor wont operate


check for power to drive motor,if power is there when you pull gun trigger then motor is bad.if no power look for bad wire connections then relay.

May 09, 2009 | Welding Tools

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