Mag or Battery Ignition Unit

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TiberiusCub
Posts: 12
Joined: Sun Aug 27, 2017 1:49 pm
Zip Code: 22039
Tractors Owned: 52 and 55 Cubs
Location: NoVA

Mag or Battery Ignition Unit

Postby TiberiusCub » Tue Aug 29, 2017 9:43 am

Greetings all,
As discussed in my other post, it has been around 15 years since I worked on a tractor and there is a lot of rust on my noggin. (Disclaimer: I used to work for a trucking company. I hesitate to say I was a diesel mechanic because I did not do a lot of engine work, but I did do a lot of diagnosis and parts R & R, so I am somewhat mechanically inclined). With that disclaimer out of the way, I am trying to figure out if the two tractors I have have Mags or BIUs. I have posted some pics below. Also, it appears on the 55 that someone else put some kind of resistors on it, I am guessing instead of a solenoid. Has anyone seen anything like that?

Thanks in advance,
TC
Attachments
55 Right Side View.JPG
55 Right Side View.JPG (74.36 KiB) Viewed 288 times
52 Right Side View.JPG
52 Right Side View.JPG (62.9 KiB) Viewed 288 times

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raystractors
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Zip Code: 37058
Tractors Owned: 1950 Cub, 1952 Cub, 1970 Cub, 1975 Cub, 1953 Cub, 1939 A, 1948 super A, 1952 super A, 1950 C demonstrator, 1952 Super C, 1949 H, 1956 farmall 300, 1957 international 350, 1963 Massey Ferguson 35
Circle of Safety: Y
Location: TN Dover

Re: Mag or Battery Ignition Unit

Postby raystractors » Tue Aug 29, 2017 9:55 am

Not a real clear picture, but both have a external coil attached, which means they are battery ignition.

Jim Becker
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Re: Mag or Battery Ignition Unit

Postby Jim Becker » Tue Aug 29, 2017 10:06 am

I agree with raystractors, not real clear.

The '55 appears to have 2 large resistors. I suspect a 12-volt conversion with one resistor knocking the voltage down to feed the original 6-volt coil. The second is probably in the excitor feed to an alternator.

The '52 has something strange going on as it appears to have a generator but there is no regulator and the whole wad of wires where the regulator belongs is all taped together. It has a replacement coil. The coil is well labeled so reading it will give a clue. Maybe the generator is the original and the regulator has been moved. Maybe it was replaced with an earlier one with a cut-out on top. Maybe it is some other generator (12-volt?). Read the coil. See if you can find a regulator in some non-stock location.

TiberiusCub
Posts: 12
Joined: Sun Aug 27, 2017 1:49 pm
Zip Code: 22039
Tractors Owned: 52 and 55 Cubs
Location: NoVA

Re: Mag or Battery Ignition Unit

Postby TiberiusCub » Tue Aug 29, 2017 10:36 am

I am going to add better res pics. This might help.

TC
Attachments
55 Right View Better Pic1.jpg
52 Right Side View Better Pic.jpg

staninlowerAL
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Posts: 2611
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Location: AL (Southwest)

Re: Mag or Battery Ignition Unit

Postby staninlowerAL » Tue Aug 29, 2017 10:48 am

IH J4 magneto photo from TM tractor parts
mvc_5877s.jpg

staninlowerAL
5+ Years
5+ Years
Posts: 2611
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Location: AL (Southwest)

Re: Mag or Battery Ignition Unit

Postby staninlowerAL » Tue Aug 29, 2017 11:07 am

Go to the QUICK LINKS tab at the top left corner of this page and download the pdf manual GSS 1012 Electrical Equipment for detailed information on the Magento and Battery Ignition systems used on these tractors

TiberiusCub
Posts: 12
Joined: Sun Aug 27, 2017 1:49 pm
Zip Code: 22039
Tractors Owned: 52 and 55 Cubs
Location: NoVA

Re: Mag or Battery Ignition Unit

Postby TiberiusCub » Tue Aug 29, 2017 11:22 am

Thanks Stan, will do.

TC

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Don McCombs
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Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
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1951 Farmall Super C w/FH
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Location: MD, Deep Creek Lake

Re: Mag or Battery Ignition Unit

Postby Don McCombs » Tue Aug 29, 2017 12:08 pm

Looks like both are battery ignition units.
Don McCombs
MD, Deep Creek Lake

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Jim Becker
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Re: Mag or Battery Ignition Unit

Postby Jim Becker » Tue Aug 29, 2017 3:26 pm

More clear. My comments stand as they were.

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Glen
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Location: Wa.

Re: Mag or Battery Ignition Unit

Postby Glen » Tue Aug 29, 2017 6:18 pm

Hi,
The Cub owner's manual shows the 2 different ignition systems.
Here is a page from the 1955 Cub owner's manual I posted at your other post showing the Battery Ignition unit, and generator as they originally were.
Yours have been changed some. They both had the switch on the starter with the rod to pull originally. :)

http://farmallcub.com/rudi_cub/www.clea ... e%2050.jpg

TiberiusCub
Posts: 12
Joined: Sun Aug 27, 2017 1:49 pm
Zip Code: 22039
Tractors Owned: 52 and 55 Cubs
Location: NoVA

Re: Mag or Battery Ignition Unit

Postby TiberiusCub » Wed Aug 30, 2017 7:54 am

Thanks Glen. I have reviewed the 52 and 55 manuals. I will have to wait until the tractors are delivered and dive in and see if I can figure out the wiring nightmare.

TC


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