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Farmall & IHC Tractors Discussion Forum

Genset with U9 engine mag install

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Author  [Modern View]

11-15-2023 15:13:25

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Hi guys, I am back at the genset after being pulled away to do a D2 Cat dozer. I had the mag totally rebuilt by Adrian;s mag service and it looks great. my question is How exactly does one install mag. I know to bring it up on #1 TDC and then put the mag in place. where I am confused is i am told this is a counter rotating mag due to the gearset in the front of the engine. a normal install would rotate the cover towards the engine at first then Rotate till it snaps. with this am I to start so the cover is outboard then rotate towards Engine? Im told that this engine is the same as a w9 gas?diesel. Help please

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11-15-2023 23:02:11

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 Re: Genset with U9 engine mag install in reply to Bogbilly, 11-15-2023 15:13:25  
Yes its the same engine and same counterclockwise rotation. A hand crank is the best thing for setting the timing once u have the mag on. You can turn the engine ever so slow till u hear the impulse trip and thats when u stop and check your timing marks. Then u can move the mag to fine tune the timing to tdc if you out a few degrees. And another thing I do is use a small chizel and mark where the mag sits after its timed. Then you have a reference point if you want to advance it a few degrees anytime. And the same with electric distributors. Many engines are also marked that way from the factory.

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11-15-2023 19:56:57

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 Re: Genset with U9 engine mag install in reply to Bogbilly, 11-15-2023 15:13:25  
No matter which way it turns you have to rotate it opposite of rotation to snap the impulse.

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Tramway Guy

11-15-2023 17:16:49

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 Re: Genset with U9 engine mag install in reply to Bogbilly, 11-15-2023 15:13:25  
Is it a U9 or a UD9?

If Im not mistaken, the mags rotate opposite on a diesel compared to a gas.

I would think you should find the FP(or Fire) mark on the flywheel or Crank pulley first, if there is one.

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11-15-2023 17:53:40

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 Re: Genset with U9 engine mag install in reply to Tramway Guy, 11-15-2023 17:16:49  
A W9 also uses a left hand mag

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11-16-2023 15:44:03

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 Re: Genset with U9 engine mag install in reply to ihplowboy, 11-15-2023 17:53:40  
Thanks for the comments guys. I have been busy rebuilding my plow to get ready for the white stuff. I think i have a handle on it so will take a few pics for the post. Wont be able to start the beast yet as I am waiting on a carb kit.

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