Lincoln welder

notjustair · Jun 23, 2013

My arc welder is an old Lincoln tombstone. Love it.

The neighbor called today - she had broken the frame on her field cultivator. I went over and welded the frame and then welded on reinforcements to strengthen it. It is a JD unit that is about 40 years old and this was the last area to be reinforced.

Her Lincoln is a tombstone but an AC/DC machine. I assume 5-7 years old. It did a fine job of welding but there was never a cooling fan. I have used it before and I thought a fan continuously ran like mine. The newer ones have a fan, don't they? I ran it for long beads and was probably close to the top of the duty cycle. It had to have needed cooling. It was also about 92 degrees out. She didn't remember as she doesn't weld (her brother usually comes over and welds for her).

Bob Bancroft · Jun 23, 2013

I think that's one of those open fans. They can stick just setting. Sometimes need a little help to get going again.

36 Coupe · Jun 23, 2013

Fan motors never get oiled,If you cant hear the fan run oil it.2 drops.

old-9 · Jun 23, 2013

My miller had a "mud dabber's" nest in the fan stuck it but was easy to clean out.

notjustair · Jun 23, 2013

So all of the Lincoln's still use a continuously running fan?

I will bet you that one is toast. Even if it was just a dirt dauber I used it for about 4 hours steady - that's a little long for that motor to be trying to work and heating up.

showcrop · Jun 23, 2013

(quoted from post at 16:17:56 06/23/13) Fan motors never get oiled,If you cant hear the fan run oil it.2 drops.

How do you get at it?

js305 · Jun 23, 2013

I bought one of these in the late 70's. The fan made noise from the get go and I thought it was supposed to, since it never was quiet. After a while I had to use a long thin screwdriver to make the fan start running after it had set for a while. Finally, I took the top off and saw that it has a cheap looking fan that looks like an exhaust fan in a bathroom. I got a four inch fan that is made much like a computer cooling fan, made for 120 volts. After a little fabrication I mounted this fan in place of the original. That was about fifteen years ago. The new fan moves more air, is sealed against dust, and is much quieter than the other one. These welders are almost bullet proof, but the fans in them are really lacking.

36 Coupe · Jun 24, 2013

Take the back panel off.my Lincoln dates from 1964.Later models have a different back panel.A motor that starts slow and picks up speed needs a drop of oil on each bushing.

36 Coupe · Jun 24, 2013

Those motors are impedance protected.They can stand a locked rotor.Never leave a welder plugged in when its not in use.Lightning can jump the switch and short the diodes on AC/DC models.Fan motors can be damaged by lightning strikes on the power line.

36 Coupe · Jun 24, 2013

My Lincoln 225 has a 240 volt fan.

EX 450 Owner · Jun 24, 2013

I don't known about the newer ones but; back in the early 1960’s when I bought my 225 amp Lincoln tombstone unit, the 180 Amp did not have a fan while the 225 amp model had a 240 volt impedance protected fan unit.

Lincoln welder

notjustair

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Bob Bancroft

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36 Coupe

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old-9

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notjustair

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showcrop

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js305

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36 Coupe

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36 Coupe

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36 Coupe

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EX 450 Owner

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