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allis chalmer wd40
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rhesamc View Drop Down
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Joined: 28 Oct 2014
Location: Bridgeport NY
Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rhesamc Quote  Post ReplyReply Direct Link To This Post Topic: allis chalmer wd40
    Posted: 19 Jul 2025 at 7:43pm
I cannot find a timing mark on the flywheel.  I don't seem to see an inspection plate either..  I took the plate at the bottom of the flywheel off and rotated engine, but I cannot find a timing mark.  I assume I am doing something wrong.  Please somebody help me.  Rhesa McKnight
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IBWD MIke View Drop Down
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Joined: 08 Apr 2012
Location: Newton Ia.
Points: 4141 		Post Options Post Options   Thanks (0) Thanks(0)   Quote IBWD MIke Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2025 at 4:44am
They are there, you may need to wipe the flywheel clean with some brake-clean and a rag to see them.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 22166 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2025 at 7:14am
This is easy on a WD-45. Remove the clutch housing cover complete from underneath the flywheel. Rotate the engine until the crankshaft pulley setscrew is pointed exactly straight down. If you do this, the TDC Mark will be right there on the bottom edge of the flywheel. It's probably covered in rust and will need cleaning. There are two marks: TDC and "F" or "FIRE" which is 30 degrees BTDC. A properly timed engine is the FIRE Mark at wide open throttle.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 88603 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2025 at 7:44am
wire brush or 100 grit sandpaper and good ways to cleanup the area..
Like them all, but love the "B"s.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8684 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2025 at 1:49pm
Even cleaned up they are hard to see. Mark the FIRE line with white paint or something so it's visable when viewing with timing light. If it has M&W's it might be closer to 25Deg advanced. They were higher compression and detonate at 30.
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 1119 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 5:18pm
Hmm, I wonder if I put my wd fly wheel back on right?
Didn’t know there was any marks on the fly wheel when I put rear crank seal in….
Is there 3 ways the fly wheel will go on wrong?
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 22166 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 6:05pm
Flywheel only goes on one-way.
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Walker View Drop Down
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Joined: 12 Sep 2009
Location: oh
Points: 9006 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Walker Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jul 2025 at 6:22pm
If you are looking under WD 40 it's easy to understand how you may have gotten inaccurate information. Best and most sure way to find a timing mark is remove one plug, replace wire and hand it to your wife while saying hold this, turn ignition on and rotate flywheel until you find it or notice some other indicator you are close.


Edited by Walker - 24 Jul 2025 at 6:36pm
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