oil on the points

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splints
Posts: 13
Joined: Thu Apr 19, 2018 9:04 am
Zip Code: 75931

oil on the points

Postby splints » Tue Jul 03, 2018 3:22 pm

57 cub loboy died after mowing bout an acre and wouldnt start. i left her sit all night and checked it out today pulled the dist cap {not mag} and found oil not a lot but some anyway i cleaned it out with brake shoe cleaner let it dry put it back together. fired right up. my question is where did the oil come from? is there an "o" ring ? and could it be the coil got hot?

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Bill V in Md
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LT1045 Cub Cadet
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Re: oil on the points

Postby Bill V in Md » Tue Jul 03, 2018 4:29 pm

The oil could be coming from a leaky governor oil seal.
Bill VanHooser
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splints
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Re: oil on the points

Postby splints » Tue Jul 03, 2018 5:02 pm

I thought of that but didn't know if there was an oring on the shaft. btw do you happen to know if the mag seal and dist seal are the same ?

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Bill V in Md
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Posts: 728
Joined: Sun Feb 02, 2003 6:51 pm
Zip Code: 21228
Tractors Owned: 1948 Farmall Cub
LT1045 Cub Cadet
Circle of Safety: Y
Location: MD, Catonsville

Re: oil on the points

Postby Bill V in Md » Tue Jul 03, 2018 6:20 pm

There is a distributor shaft seal on the battery ignition units. The magneto oil seal is different.
Bill VanHooser
Circle of Safety

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Glen
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Re: oil on the points

Postby Glen » Tue Jul 03, 2018 6:35 pm

Hi,
There is an o ring on the Battery Ignition unit shaft, like Bill said.

The oil seal that seals off the whole unit from the motor oil runs on the governor gear, it is the same seal, whether you have a Battery Ignition unit, or a magneto.
If motor oil is running through the Battery Ignition unit, the oil seal is probably worn out and needs replacing.

Below is a listing at TM Tractor for the seal, it has a pic below on the page of the engine.

http://www.tmtractor.com/new/gv/436fp.htm

Below is a pic of the drive and seal. :)
Attachments
Cub gov gear.jpg

splints
Posts: 13
Joined: Thu Apr 19, 2018 9:04 am
Zip Code: 75931

Re: oil on the points

Postby splints » Tue Jul 03, 2018 6:50 pm

thanks guys great help! now i know which direction to go. are there any break down pictures of the distributor out there?

staninlowerAL
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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, '51 JD M (regular), '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"
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Re: oil on the points

Postby staninlowerAL » Tue Jul 03, 2018 7:15 pm

splints wrote:thanks guys great help! now i know which direction to go. are there any break down pictures of the distributor out there?

Manuals section GSS 1012 has a complete section on the battery ignition as well as the magneto ignition.

mozer71
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Re: oil on the points

Postby mozer71 » Tue Jul 03, 2018 7:22 pm

Great advise and now the distributor, itself. Under the rotor there is a felt pad. This takes a few drops of oil to lube the sleeve bearing. When the bearing wears excessively, the fit isn't tight enough to prevent oil seepage. You can check the radial "play" of that bearing by moving the rotor shaft up/down and side to side. It is only one bearing but it causes other problems because the rotor is running eccentric and carving out the cap contacts. It is better you found this now.

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Glen
5+ Years
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Posts: 3024
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
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Location: Wa.

Re: oil on the points

Postby Glen » Tue Jul 03, 2018 7:24 pm

Hi,
Below are pages from the Cub parts manual showing the Battery Ignition unit.
The o ring on the shaft is number 24 in the first pic. You have to take the distributor apart to get to the o ring.
If you take it apart, be sure the spark advance parts move freely, and are not stuck.

http://www.farmallcub.info/manuals/cub_ ... 012-28.jpg

http://www.farmallcub.info/manuals/cub_ ... 012-26.jpg

mozer71
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Re: oil on the points

Postby mozer71 » Tue Jul 03, 2018 7:27 pm

Point settings become wonky when the shaft bearing is loose.
Oh. Thanks Glen. !

splints
Posts: 13
Joined: Thu Apr 19, 2018 9:04 am
Zip Code: 75931

Re: oil on the points

Postby splints » Tue Jul 03, 2018 7:57 pm

Great info and thanks for the breakdown. Now all that's left is finding some more time in the day! you would'nt know where some might be ? lol

staninlowerAL
5+ Years
5+ Years
Posts: 3714
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, '51 JD M (regular), '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"
Circle of Safety: Y
Location: AL (Southwest)

Re: oil on the points

Postby staninlowerAL » Tue Jul 03, 2018 8:16 pm

The older I get, the more short of time I get. Since I retired I don't know how I ever had time to go to work. :lol:


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