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Wisconsin Engines Single cylinder up to V4 engines.

Wisconsin Engines

1965 Wisconsin aenld # 3983098


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  #1  
Old 03-08-2019, 11:25:57 PM
Lizardking Lizardking is offline
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Default 1965 Wisconsin aenld # 3983098

I recently bought a Quincy 325-7 Wisconsin AENLD on a 1947 Atlas tank air compressor. Compressor had been sitting sins 2001 and decided to change the oil on the Wisconsin . Before I bought it I tested the compressor and it ran and built compression but stumbled and died. Oil was dirty with some sludge on the pan but not too bad. I looked in the block found the threaded part of a bolt but couldn't see where it might have came from. Anyone with experience rebuilding these engines have any idea where in could of came from? Oil pump has its 3 bolts and connecting rod has it's 2 nuts and bolts.
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  #2  
Old 03-09-2019, 12:19:53 AM
K-Tron K-Tron is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Aren't you glad you pulled the oil pan! What size is the bolt, it looks 5/16-18 or 3/8-16? There also appears to be a loose helicoil spring hanging out in there. It is possible someone broke off a fuel tank mounting bolt, somehow drove the rest of the broken off bolt through the block, installed a helicoil improperly and vibrations from running put the helicoil in the oil pan? There are not many thru-holes on a Wisconsin AENL that share the oil pan. I would pull the rod bearing cap, check the connecting rod bolts, check the crankpin, and make sure someone did not put a really long bolt through the block that the crankshaft could have sheared off.

Chris
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Old 03-09-2019, 01:35:09 AM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

You might be right about someone pushing a broken bolt through the block. Haven't sized the broken bolt but it's the same size as the ones on the starter bracket that go through the block. The other bolt I believe is for the battery ground cable. I inspected the cap bearing, bolts, pin and checked out good. The broken bolt has no damage besides where it broke off so it didn't get sheared off. Not sure if that's a helicoil insert on that bolt but will check it out tomorrow.
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Old 03-10-2019, 12:15:58 PM
Zira Zira is offline
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Default Re: 1965 Wisconsin aenld # 3983098

What Chris (Ktron) said. I would also put a wrench on all the bolts that size that you can find (gas tank bracket, bearing plate on both pto side & flywheel side, head) and make sure they are tight. If any free spin, there may be more helicoil pieces ready to fall out into the lower end of the engine.
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Old 03-24-2019, 03:44:02 AM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Did some work on the wisconsin and broke a bolt that holds the cooling tin to the side of the head. Drilled it out and taped the hole. Now I'm stuck trying to remove the starter from the bracket. I've tried hammering the bracket off with no success. I was able to remove the starter and bracket off the block . I sprayed it with kroil and will give it another try tomorrow. Going to try heat if the kroil doesn't work. Anyone have any ideas on how to take the bracket off?
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Old 03-24-2019, 09:17:58 AM
gdstew gdstew is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Remove the pinion gear!
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Old 03-24-2019, 11:08:26 PM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Quote:
Originally Posted by gdstew View Post
Remove the pinion gear!
Will that release the bracket?
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Old 03-25-2019, 12:40:30 AM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Quote:
Originally Posted by gdstew View Post
Remove the pinion gear!
Success!! Thank you
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Old 04-18-2019, 03:16:31 AM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

My Wisconsin doesn't have a dip stick or crankcase breather.
Should it have a crankcase breather ? Will a small air filter work?
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Old 04-18-2019, 10:21:47 AM
K-Tron K-Tron is offline
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Default Re: 1965 Wisconsin aenld # 3983098

The AENL never had a removable dipstick, at least not that I know of. You simply used a wrench to open the fill plug and visually check how much oil was in the engine. This is a fill to overflow system. Your engine has a breather, you just havent spotted it yet. There is a 1/4" NPT hole tapped on the side of the valve chest cast into the crankcase. A brass elbow is normally fit here with a pipe that goes into the air cleaner pipe.

Chris
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Old 04-18-2019, 11:52:32 AM
Lizardking Lizardking is offline
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Default Re: 1965 Wisconsin aenld # 3983098

Just went through some pictures of it before I took it apart and see the pipe you described. Thank you Chris.
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