Mig Welders/Wire
Feeders
1. Most problems with wire welders begins with the gun long overdue for a
rebuild. A gun rebuild consists of: liner, diffuser, tip and nozzle. And
on average costs about $35.00.

Symptoms suggesting it is time to rebuild gun and clean drive assembly :
--   wire drags, feeds erratically or 'bird nests' inside machine
--   wire burns back to tip
--   you are having to increase the amount of tension being placed
on wire as it feeds into the gun.
Cleaning your drive assembly consists of:
--   cleaning the groove on your drive roll
--   cleaning the wire inlet and outlet guides
--   cleaning oil and debris from compartment area

You will need to consult your owners manual on how to install your new
liner. Most but not all liners are held in the gun at the rear by a set screw.
Once loosened the liner can be removed from the REAR of the gun. The
nozzle, diffuser and tip most be removed prior to installing the new liner.
When cutting your new liner length to fit the gun, it is best to use the old
liner as a length gun. DO NOT CUT THE LINER TO THE LENGTH OF
THE GUN. The liner must seat into the base of the diffuser to insure
smooth wire transition from liner to tip.

2. The second common problem is that the gun has pulled apart from the
factory crimp at the mchine end or handle end.

Symptoms include:
--  the wire feeds but only sparkles on work surface or ground
clamp
--  installed new liner but wire still drags or feeds erratically
--  gun handle is getting hot while welding

These are the two most common problems with mig welders. If
you are having problems other than this, simply contact us for
further instructions.
Please provide us with the following information when
asking a question:
** Make and model of equipment
** serial and/or code number
OWNERS MANUALS
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OEM PARTS
Century welder parts
breakdowns are not
available online. Contact
us for information
Most Snap-On mig
welders are made by
Century. Contact us for
information
COMMON PROBLEMS
WARRANTY
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Copyright 2007 Bill's Welding Equipment Repair All rights reserved Rev May 10,2007
Attn: Shannon

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