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[duaneb55]

I stand corrected. Looked at the wrong unit....

[duaneb55]

Completely different animals. The 14 incorporates a 3-wire potentiometer whereas the 23 uses a large ceramic resistor and wiper.

[duaneb55]

24-pin? I believe you'll find that's 10-pin and yes, you'll need the WC-24 Weld Control to mate the two as already pointed out.

[duaneb55]

You also need to make sure the throttle solenoid plunger bottoms out at high idle (weld) speed.

[duaneb55]

You may have a defective (shorted) throttle solenoid.

Unplug it and check the resistance across its leads. Spec is less than 1ohm extended, 10-12ohms retracted (plunger bottomed).

[duaneb55]

Engine stator should be putting out approximately 47VAC between both stator output leads @ 3600rpm (high idle) and approximately 24VAC at 1800rpm disconnected from the regulator.

Resistance across both stator output leads disconnected from regulator should be .06 to .10 ohms.
...

[duaneb55]

I can't say I've ever heard of or seen a Bobcat suffer a failure from jump starting but Miller recommends charging a dead battery only before attempting to start and not "jump" starting. Definitely true when dealing with a Trailblazer as there is way too much evidence that jump starting has...

[duaneb55]

Glad to hear you got it figured out and functioning. I apologize that I didn't get back and respond to your follow up questions.

Wish every problem was like yours. Always great when a problem is traced to an easy fix such as this.

[duaneb55]

DANG!! You're a scary lookin' feller!

[duaneb55]

The 180 SD relies on the foot/hand control (command) signal for TIG arc initiation and amperage control whereas the "local" adjustment simply controls or limits the maximum output to its setting.

That said, a failed sensing hall device is a very common issue with this series as...

[duaneb55]

Keep in mind the spec OCV is +/- 10%.

However, with auxiliary power output right at 60Hz (3600rpm) your no-load speed is 150rpm too slow. High idle spec is 3750rpm to allow for governor droop (drop in speed under load) which would be 62.5Hz at no-load.

OCV will actually drop...

[duaneb55]

The OP switch is NO (Normally Open) with no oil pressure. If functioning properly the switch will close to ground with more than 4psi which is what the hour meter/fuel gauge module is looking for. Pulling the wire off would be simulating a low oil pressure condition and shut the unit down as it should....

[duaneb55]

Sounds right. I instructed another owner to do the same some time ago and it worked for him. Those $$$ figures sound familiar too.

That being said, I don't recall if his was the 180K or not and haven't looked up your information but I know other modules can be made to work. If the Miller...

[duaneb55]

To confirm if the throttle control solenoid is bad or not, perform the resistance tests that popscott and 1997CST have suggested above. If it's getting hot to the point of smoking and likely the cause of fuse F2 blowing - BTW is supposed to be 20A - it's probably a shorted "hold" winding which...

[duaneb55]

Just to clarify, it's not going to be diode D2. If failed shorted, the engine would crank when the glow plug switch S6 was closed. If failed open, the glow plugs wouldn't energize while cranking which one could only confirm by checking for no voltage at the glow plugs while cranking....