Question about MIG Welders

1 Answer

Mig welder My Hobart 135 Handler will not feed wire. The drive roller is turning super slow. The wire speed knob does not do anything when you turn it. Do you think it's the wire speed rheostat?

Posted by on

  • ric955 Apr 22, 2009

    I have a Hobart Handler 135. I have four heat settings and a purge setting. When I put the dial to number four, the highest setting the drive roller barely turns. It works just fine with the other settings. Anybody ever had the same problem or know what part is probably bad?

    THANKS

  • Anonymous Mar 24, 2014

    wire speed slows down when welding

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 37 Answers

Sometimes dirt builds up at the beginning of the liner, at the drive. Eventually the dirt jams in there so much that it gets very hard to push the wire through it. Carefully cut the wire between the spool and the drive and secure it to the spool through a hole, so it doesn't unspool into a bird nest, then disengage the drive roller, the wire should pull out of the tip freely. If you feel resistance when you pull it out, either there is dirt at the beginning of the liner, or the contact tip is causing resistance. Without the wire in the drive, turn on the machine and try it watching the drive. Does the drive work freely now? Does it change speed with the rheostat? If its a problem with dirt, this is what I do, after you get the wire threaded back through the drive, liner and contact tip, and everything is working, take a small clean cotton rag and simply tie it around the migwire between the spool and the drive, in a way that the drive can't **** it in. This will constantly clean any dust/dirt off the wire before it goes through your expensive drive and liner. Whenever you change the spool, change the rag. Hope this helps, and please post your results.

Posted on Feb 08, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

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

7_3_2015_6_37_05_pm.jpg7_3_2015_6_37_06_pm.jpg

Jun 06, 2014 | Hobart Handler 140 Mig Welder

1 Answer

Hobart handler 135, the wire starts to feed for about 15 seconds then slows and stops.


Hi:
Don't know how old is your unit but my guess is that your gun's liner is the problem. Have you change it lately? If not, change it. Does your machine just stops feeding the wire or does it shuts down? If it just stop then; is the liner, if it shuts down; then you have a pc board problem.

Oct 29, 2011 | Hobart Handler 140 Mig Welder

1 Answer

I have a Hobart 140 Handler, My Problem is the feed wire is feeding too fast. It can not be regulated with the speed control. I believe the problem is with the pc board but not a 100 percent sure.


Hi:

In order to check the wire speed control you will need to open the machine and test the wire speed control mechanism (rehostat, potentiometer) with the use a volt meter. If you see a a variation on it while moving the knob then your problem is the PC board.

Good luck and have a great day.

Aug 22, 2011 | Hobart Handler 140 Mig Welder

1 Answer

Have a Hobert handler 135 i can't control the wire feed speed it seems to run wide open.


Sounds like the restate that controls the wire speed is gone. Replace it.

Jan 05, 2011 | Hobart Handler 140 Mig Welder

1 Answer

I have a hobart handler 135 motor stops feeding


Take the drive motor off and blow out dust, chips, wire pieces, etc. and then rinse out with contact cleaner, blow dry, re-install. Had to do this every so often with mine. Hope that helps.

Jan 05, 2010 | Hobart Handler 140 Mig Welder

1 Answer

Hobart handler 135 feed motor for wire doesn't feed wire. motor is ok I tested it with seperate power source. No power to motor from main board or ??????


check the SCR ,looks like a big transistor mounted
to a heat sink or some of the older units had a relay
in-line with a fuse , I have a older Hobart and it is
a great little welder. If you snap a pic of the P.C.
board and email it ill rsheehan@northernsteeldesigns.com

point out what parts to check.and replace.

Rob

Dec 06, 2009 | Hobart Handler 140 Mig Welder

1 Answer

Hobart 135 wire feed sped control problem


you have a resistor down, first check the resistor on the centre pole then those going off to the two other pins

Oct 04, 2009 | Hobart Handler 140 Mig Welder

1 Answer

Wire feeds too quickly


Some welders control wire speed with the amps control, some control amps with the wire speed control. You might try turning things up until it runs smoothly without pushing back. If you're new at welding, it does take some practice until it feels right.

Jan 15, 2009 | Hobart Handler 140 Mig Welder

1 Answer

Seised wire inside feeding tube


You can replace the liner by removing the shroud tip, and pulling the spring (liner) from the machine end of the trifgger cable.
Liners are replaceable.

Dec 23, 2008 | Hobart Handler 140 Mig Welder

Not finding what you are looking for?
MIG Welders Logo

Related Topics:

459 people viewed this question

Ask a Question

Usually answered in minutes!

Top MIG Welders Experts

yadayada
yadayada

Level 3 Expert

60867 Answers

Robert Smith
Robert Smith

Level 2 Expert

243 Answers

Matt Olenzek
Matt Olenzek

Level 2 Expert

286 Answers

Are you a MIG Welder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...