Farm Equipment - WD Governor Install /Magneto Timing

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WD Governor Install /Magneto Timing

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=10465
Printed Date: 22 Jan 2025 at 9:55pm
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Topic: WD Governor Install /Magneto Timing

Posted By: NH in MD
Subject: WD Governor Install /Magneto Timing
Date Posted: 02 Apr 2010 at 3:01pm

I have a WD that came to me partially disassembled. I need to resinstall the governor assembly. Are there supposed to be marks to line up the gear on the governor assembly with the gear in the block properly? I can't seem to see any.

Also, I bought a WD manual, but when it came today it only covered timing for the later distributor models. Can anyone give me the instructions for timing the WD magneto?

Thanks very much, and have a blessed Easter.

Neil in MD

1949 Allis WD
1947 Allis B

Replies:

Posted By: LouSWPA
Date Posted: 04 Apr 2010 at 8:17am

There is a web site that covers this, I'll see if I can find it, but, I don't think there are marks on the gears. Set the motor to the F marke on flywheel on compression stroke of no.1 cylinder. Then you install mag set so rotor is at no 1 position.

Hopefully, someone can fill in the rest, 'cause I can't remember.

Posted By: LouSWPA
Date Posted: 04 Apr 2010 at 8:42am

http://www.ytmag.com/articles/artint7.htm - http://www.ytmag.com/articles/artint7.htm

Posted By: TomMN
Date Posted: 04 Apr 2010 at 6:00pm

To set the governor gear correct the slot for mounting the mag needs to be horizontal when any of the pistons are at TDC. Since this turns at crankshaft speed you'll see by turning the engine with the hand crank that no matter which pistons 1&4 or 2&3 are at TDC the slot will always be horizontal when one set is up. The mags for these all impulse fire on the horizontal, then once up to speed the impulse coupler doesn't come into play and the spark is advanced to the proper fire mark. Make sure that you have the crankshaft on TDC though, look either at the mark on the flywheel or look at the set-screw on the front crankshaft pulley it will be pointing straight down when 1&4 are at TDC (WC not sure what the pulley looks like on a WD). Since the pistons dwell at the top for quite a few degrees just looking at the pistons isn't good enough.