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Farmall & IHC Tractors Discussion Forum
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Timing a MAG

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rdb

12-08-2007 17:03:31




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Hey
Can anyone give me instructions to time a MAgneto on a Farmall H.
Thanks!
RDB




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El Toro

12-09-2007 04:04:57




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
third party image

These instructions should help. Hal



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Andy Motteberg

12-08-2007 21:04:30




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
Turn engine so #1 piston is on TDC (Top dead center). Turn the magneto so the rotor points to the #1 cap terminal. Install the mag and lightly tighten bolts with the mag turned all the way towards the engine. Crank the engine to the next TDC and loosen the mag bolts and slowly turn the mag outwards until the impulse coupling "trips". Tighten the bolts. DO NOT OVER TIGHTEN.



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RDB

12-08-2007 18:56:50




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
Thanks alot and i will try to get it stirght tommorw



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Haas

12-08-2007 18:41:01




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
Get the No. 1 cylinder at TDC of the Compression stroke. Rotate mag so that the rotor points to No 1 firing position. Assembly mag to tractor with mag rotated up next to the block. Turn engine one compete revolution back to TDC of the next cylinder. This is to get implulse set correctly to trip. Rotate mag out away from the engine block until the the impulse just trips. Tighten up the mounting bolts, and the mag is now timed. Rotate engine again one revolution to the next TDC position. Mag impluse coupling should trip at TDC. If not adjust until it does.

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Yugrotcart

12-08-2007 17:28:11




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
RDB,
Here's a link to the IHC Magneto manual.
Hope this helps.

Paul



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Andy Motteberg

12-08-2007 20:59:57




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 Re: Timing a MAG in reply to Yugrotcart, 12-08-2007 17:28:11  
You must have missed the link Paul.

Link


Andy.



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gene bender

12-08-2007 17:13:50




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 Re: Timing a MAG in reply to rdb, 12-08-2007 17:03:31  
First thing before the mag is installed turn it over and with the cap off make sure the rotor lines up with the tower on the cap when it fires. Then when you have #1 on the compression tdc you can install having the rotor pointed to the wire going to #1. Since the drive is a slotted type thing the worst you can be off is 180deg. With the plugs out and using the cramk you can determine if you have installed it correct by turning engine over and watching when it impulses. There is no advancing timing as it will impulse on tdc then when engine runs it will go to 34deg advance nothing in between good luck.

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