I bought a Miller Dialarc new back in 1980. The machine had about 1/2 hour running time on the machine when the cooling fan motor started to make a noise. I took the sheet metal off the welder and wanted no part of fixing the motor. Now 35 years later it was not a bad job. I took the motor out and apart and went to a bearing house and asked for bearings for the motor and the guy there told me that the original bearings were good and did not need replacing. So I put the motor back together and into the welder. I noticed taking it apart that the hub the fan blades are on, on the armature had the Allen screws finger tight. Putting it back together I tighten them good and thought that was the noise problem.
There is still a noise, anyone have any ideas.
When that machine was first turned on that fan was as quiet as a small man fan.
There is still a noise, anyone have any ideas.
When that machine was first turned on that fan was as quiet as a small man fan.