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Old 02-06-2018, 12:38 PM   #1
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GM 4107 Engine

I am going to be looking at this Coach here soon and the owner sent me pictures of the engine as I requested. Trying to figure out why an Alternator on the front. Owner of the coach belonged to her dad that has since passed. The owners couldn't give me a reason other then charging the batteries. Should I be looking for a problem somewhere? I am a Newbie so trying to figure out what to look for when I get there.Click image for larger version

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Old 02-06-2018, 03:19 PM   #2
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The old 8V71s could have drives on the front and rear timing gear covers for running things like an alternator or compressor. You can see the air compressor on the opposite end. The cam shafts were just below the head.

That's probably where a good size alternator would go, but that looks like a small frame 90 amp Delco.

While looking at that engine, keep in mind that its a V8 engine that they lean over on its side, making one bank of cylinders level with the ground and the other standing up. Its not a big deal but that's what they did it to fit them big, 2 stroke, Detroit Diesel engines in.

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Old 02-06-2018, 03:34 PM   #3
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Thanks Twinboat . It looks like a small alternator. But I guess I don't have to worry about it. The owners just emailed me telling me the coach was sold. I wished I could have looked at it first tho. There might have been a reason that they were selling at a low price too. So onward I go.
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Old 02-06-2018, 04:46 PM   #4
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They were probably selling it cheap because the drive train is pre-historic.

Most of today's mechanics would be scratching there head, looking at that.

Good luck shopping.
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