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Help with a Miller 44D Trailblazer Welder

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Old 02-28-2014, 10:25:58 PM
tdarden tdarden is offline
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Default Help with a Miller 44D Trailblazer Welder

About 3 years back I acquired a Miller TrailBlazer 44D with a Perkins 4-154 engine. I have never heard it run , even though the hour meter shows only about 100 hours. 1982-83 model. Few parts were missing and when I finally found them the engine appeared frozen, but it was not 9 months earlier.

I have found in forums a procedure to hopefully un-sieze the engine but that is not my question. I suspect that the unit has not been run in over 20 years.
My question is, (1) is there any way that the injection pump could still be functional ?

(2) Also where do you go to get an injector pump tested ?

(3) I have also read that with injection pumps there is a procedure that you must go through to both remove them as well as re-install them ?

Don't know squat about Diesels. Any help would be appreciated? If I am on the wrong forum please direct me to the proper one.
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Old 03-01-2014, 09:15:59 AM
Husky Husky is offline
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Default Re: Help with a Miller 44D Trailblazer Welder
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Old 03-01-2014, 11:05:22 AM
dkamp dkamp is offline
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Default Re: Help with a Miller 44D Trailblazer Welder

I'm no diesel expert, but the very, very first thing I would do, is pull off the injection pump, because... if it's stuck, and you try turning the engine, the result would damage a very, very expensive piece. It IS timing sensitive, so ther'es a procedure for reinstalling it to proper synchronism.
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Old 03-01-2014, 12:35:07 PM
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Toesmack Toesmack is offline
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Default Re: Help with a Miller 44D Trailblazer Welder

I have fired many diesel tractors and engines that have not run in 10 to 20 years. Often they fire up in the first 2 or 3 revolutions! Injection pumps will hold up just fine in storage provided they have clean fuel in them. Water is the real enemy here. Get the instructions on removing and reinstalling/timing your pump before removal. Usually pin the engine at TDC and mark the pump flange to timing cover area with a metal scribe before removal. Some pumps come off with the shaft in place, others will leave the shaft behind. Remember, this is the same as a distributor on a gas engine. Timing is critical.

Testing is often free if you have a good diesel shop. Overhaul is not cheap. $600 to $1200 is not unusual. You might as well pull injectors also, very easy to test, and it may allow you to get the engine rolling over.

Good luck!
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