Most recent acquisition

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Stanton
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Tractors Owned: 1942 Farmall AV, serial #87025
1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
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Location: Lone Jack, MO

Re: Most recent acquisition

Postby Stanton » Tue Mar 16, 2021 6:24 am

Greenthumbfarms wrote:The temperature here dropped last night, and I think I'll wait a few days for it to warm up before I work on it again.

I've read about timing the mag, the "snap" I'm listening for...it would be an actual sound? Or the Mag shifting when number 1 hits TDC?


Peter Person wrote:Yes, it’s an actual sound.


An audible click. Can't miss it.
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Greenthumbfarms
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Tractors Owned: 1974 Cub Cadet 1450
1975 Cub Cadet 1650
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1950 Farmall Cub (Georgette)
1956 Farmall 230 (Gladys)
1966 International Cub (Marengo)
1966 John Deere 4020 (Jack)
1975 International Cub (Ozzie)
Circle of Safety: Y

Re: Most recent acquisition

Postby Greenthumbfarms » Thu Mar 18, 2021 10:19 pm

Although I haven't had a chance to re-time the tractor, I did check the spark today. A nice, blue spark off the m center wire from the Mag, so it looks like it will be a timing issue.
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Greenthumbfarms
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Posts: 279
Joined: Mon Jun 29, 2020 4:59 pm
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Tractors Owned: 1974 Cub Cadet 1450
1975 Cub Cadet 1650
1977 Cub Cadet 1650

1950 Farmall Cub (Georgette)
1956 Farmall 230 (Gladys)
1966 International Cub (Marengo)
1966 John Deere 4020 (Jack)
1975 International Cub (Ozzie)
Circle of Safety: Y

Re: Most recent acquisition

Postby Greenthumbfarms » Sat Mar 20, 2021 12:37 pm

I timed the mag this morning, it's still giving me trouble with kicking the starter out as soon as I pull the ring. I don't know if my starter drive is shot or if I need to look at the points. Any be thoughts? Now it just wants a drip gas out the Overflow hole in the carburetor after it kicks out a time or two
Member with Will County Threshermans Association.
60th Annual Will County Threshermans gas and steam tractor show July 21-24, 2022
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Glen
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Re: Most recent acquisition

Postby Glen » Sat Mar 20, 2021 5:07 pm

Hi,
Good that you set the timing.

I would look at the spark plugs, they need to be clean so the engine will run.
If the bottom end of them look wet with gas, dry them.
If they are oily, remove the oil.
If the contacts are black, use sandpaper and remove the black, and shine them up.
Check the gaps, they should be .023".
Spark plugs can quit, and not fire, then the cylinder won't fire.

The starter drive is probably working normally, it is supposed to kick out when a cylinder fires.
If other cylinders are not firing, the engine won't run.

If the points haven't been serviced lately, I would look at them, and file or replace them if needed.
TM Tractor has new points.
The Cub owner's manual shows how to get to the points, and has pics of them in the magneto.

I would charge the battery fully, use a small output battery charger, and let it charge slowly.
A 6 amp charger is good, one that automatically slows the charge rate as the battery charges up.

It is normal for the carburetor to drip out the bottom drain hole if the engine doesn't run after running the starter. :)

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Greenthumbfarms
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Posts: 279
Joined: Mon Jun 29, 2020 4:59 pm
Zip Code: 60416
Tractors Owned: 1974 Cub Cadet 1450
1975 Cub Cadet 1650
1977 Cub Cadet 1650

1950 Farmall Cub (Georgette)
1956 Farmall 230 (Gladys)
1966 International Cub (Marengo)
1966 John Deere 4020 (Jack)
1975 International Cub (Ozzie)
Circle of Safety: Y

Re: Most recent acquisition

Postby Greenthumbfarms » Sat Mar 20, 2021 6:07 pm

Well I pulled the mag to check out the points...I dont think anyone has been inside for a long time, one of the screw heads rounded off.

Can a slot be cut with a dremel for a screwdriver head to remove it? I had figured on replacing the screws
Attachments
20210320_175407.jpg
20210320_175404.jpg
Member with Will County Threshermans Association.
60th Annual Will County Threshermans gas and steam tractor show July 21-24, 2022
https://www.steamshow.org/

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Glen
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Joined: Mon Mar 19, 2012 7:33 pm
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: Most recent acquisition

Postby Glen » Sat Mar 20, 2021 8:34 pm

You could use a power tool, if you have something that will fit in the small space.

If the magneto was held in position, in a solid holder, you could try using a large screwdriver, wider than the screw slot, and hammer the end of it lightly into the screw slot. Don't hammer hard.
Wear your safety goggles in case the end of the screwdriver might break.

A screwdriver that fills the slot is needed to prevent slipping.

Since you have the magneto off, it is a good time to grease the rotor drive gears.
Remove the 2 screws holding the cover at the rotor.
Clean the area under the cover, and grease the gears.
Check the timing marks on the gears, they should align when the rotor is pointing to number 1 cylinder.

Below is a pic. :)
Attachments
Cub magneto 4.jpg
Cub magneto 4.jpg (25.13 KiB) Viewed 109 times

k hutchins
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Tractors Owned: 1948 Farmall Cub
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Re: Most recent acquisition

Postby k hutchins » Sun Mar 21, 2021 9:16 am

From looking at your pics l would say you would be well served by a basic mag tune up.
Points, condenser, rotor, and cap.
The rotor looks well tarnished and a bit scored or burnt on the end. That leads me to believe the inside of the cap is the same. Points that are shiny and new will work better than just dressing and resetting the gap on old ones.
If you're like me you'll save the old parts for spares just in case.

Just my two cents, Glen has you covered with the technical stuff.
Why is there never enough time to do the job right, but always enough time to do it over. :?:


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