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AC B: Too much oil on the grass

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greg

05-01-2002 09:53:38

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I have a 1940 AC B with a 5' belly mower. It mows great except the side pto (where the pulley drives the belt for the mower)leaks too much grease/oil. This oil coats the belt and causes it to slip when mowing in tall grass. How do I get the pto apart to repair? Where can I get a diagram and the repair parts? Any help appreciated.

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Wiley

05-02-2002 20:58:15

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Re: AC B: Too much oil on the grass in reply to greg, 05-01-2002 09:53:38

I just replaced the oil seal on my belt pully pto. Like Byan said, it can be done without tearing down the entire pto unit. At work we made a puller that had a sheet metal screw in the front of it and a sliding weight like a slap hammer. We use it to remove front seals from diesel engines. It looks like a small dent puller. The entire job took about 5 minutes.

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Bryan Smith

05-01-2002 12:30:38

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Re: AC B: Too much oil on the grass in reply to greg, 05-01-2002 09:53:38

I just bought an IT manual (I think it was AC-11 or AC-O-11 something similar - covers B, C, CA, WD, and WD45 I think) to help me with that for about $25. Turns out the bearings on my belt pulley are loose and I have to repair that before replacing the seal. You may want to check yours - remove the belt from the pulley then try to shake the pulley/shaft to the front and rear or in and out - if you've got much of any movement you'll have to tighten/shim/replace the bearings. To do this you apparently have to drop the entire rear pto/belt shaft/hydraulic pump housing - it's held on to the differential by about 6 or 8 bolts - and remove the pto shaft. Get the manual before you start ...!

I've been told you can replace the seal (if that's all you need) from the outside - just remove the belt pulley, get the seal out (which can be a job - I plan to use a few sheet metal screws in the seal, some vise-grips, and a small hammer) and replace. Be warned that there are two seals available. A leather one is used for belt pulley shafts with a "oil-return groove" in them, while a rubber seal is used for shafts without the groove. No way to tell which you have until you take it apart.

Hope that helps. Maybe I'll get to tear into mine in a few weeks and see what it really needs....

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Greg

05-02-2002 08:27:46

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Re: Re: AC B: Too much oil on the grass in reply to Bryan Smith, 05-01-2002 12:30:38

Thanks for the info. I will get a manual on order. Who did you order from?

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Dusty MI

05-02-2002 18:37:22

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Re: Re: Re: AC B: Too much oil on the grass in reply to Greg, 05-02-2002 08:27:46

AGCO Allis dealer # 79003403 covers G, B&C, CA cost about $11.00.
Every body ought to have a manual for their tractor.

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41 C Allis #552 N.E. Texas

05-05-2002 19:44:19

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Re: Re: Re: Re: AC B: Too much oil on the grass in reply to Dusty MI, 05-02-2002 18:37:22

Be very careful when you remove the pto assambly from your tractor. The PTO assambly is very heavy and hard to handle. I have removed mine from my 41 C by myself and it wasnt east at all. Putting it back up by yourself is also not easy at all.

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