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Antique Gas Engine Discussion

IH Clutch pulley


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  #1  
Old 07-11-2005, 10:52:27 PM
John in Maryland John in Maryland is offline
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Default IH Clutch pulley

I bought an IH clutch pulley for my 6hp M. It's different from the pictures I've seen on this board. The handle rides on ball bearings. The part number on the back is G952 and the handle assy has the number H792. Was this made for the M models or older Famous engines?

Thanx

f1ywhee1s
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Old 07-12-2005, 12:11:53 AM
Bill Sherlock Bill Sherlock is offline
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Default Re: IH Clutch pulley

Those numbers are listed in my parts book for the 6 & 10 HP model M's.
G952 is listed as Pulley Carrier, H792 is Toggle Head for inside pulley carrier G952. The illustration for G952 appears to have roller bearings, maybe someone switched them out to ball bearings? My book doesn't have an illustration for H792.

Bill
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Old 07-12-2005, 02:30:32 AM
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John Hammink John Hammink is offline
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Default Re: IH Clutch pulley

Quote:
Originally Posted by f1ywhee1s
I bought an IH clutch pulley for my 6hp M. It's different from the pictures I've seen on this board. The handle rides on ball bearings. The part number on the back is G952 and the handle assy has the number H792. Was this made for the M models or older Famous engines?
The carrier G952 was already born in 1905 and used first on the vertical 5&6 hp engines from 1905 to1909. Then on the 4 hp horizontal from 1907 to 1917 and on the 6 hp from 1907 to 1918. The 6 hp M was born that year and they used them here to the end 1937. There're no bearings at all in those carriers. Since 1923 they used a bearing ball in the handwheel, but I thought only for saw outfits purposes . H792 is the toggle head which can be seen in the picture. A pic of your clutch pulley could say more.
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Old 07-12-2005, 06:31:08 AM
John in Maryland John in Maryland is offline
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Default Re: IH Clutch pulley

Thanx guys

Mine looks like picture from John. I'm currently overhauling it. Somebody shimmed the blocks to make up for wear, but added too much. I couldnt engage it. The handwheel on mine is kind of floppy, are the ball bearings supposed to be packed with grease or just oiled?
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Old 07-12-2005, 07:02:31 AM
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Default Re: IH Clutch pulley

Grease is better, oil will fly away to quick. At the moment I'm working on a Mogul clutch that fits the 3 hp M too.
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Old 07-12-2005, 04:08:22 PM
John in Maryland John in Maryland is offline
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Default Re: IH Clutch pulley

John

Do you know how thick the original wood blocks were. Mine are 1 1/18 inches at the apex. They must have been slipping because somone put 1/8 shims under them, but it was too much. I haven't decided if I'm going to make new blocks or just shim the originals with thinner material.

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f1ywhee1s
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Old 07-12-2005, 06:35:26 PM
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Default Re: IH Clutch pulley

Went to the shed and measured the blocks, mine are at the apex 1.18 inch. When the circle of the wooden shoes is the same as the friction pulley drum, you can adjust the toggle forks to get a stronger or a weaker tension on the blocks. For a good working clutch pulley it's necessary to give a ferm push and pull power on the handwheel to prevent slipping.
At the picture you see another type M clutch, which is spring loaded and it really needs some power to push or pull it in or out. Hope you can fix yours.
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Old 07-12-2005, 07:20:54 PM
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Default Re: IH Clutch pulley

What book lists the part numbers for the clutch pulley? I have two different M manuals and they don't mention the pulley or have any parts numbers for them.
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Old 07-12-2005, 09:32:58 PM
John in Maryland John in Maryland is offline
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Smile Re: IH Clutch pulley

Thanx again John

When somebody shimmed mine they took all the adjustment out of the toggle forks and the blocks were still too thick, the clutch just won't engage. I think I'll find the radius of the inside drum, make a jig so I can cut new blocks on my band saw. I'll try 1 3/16 inches thickness let you all know in case someone needs to do this in the future.

f1ywhee1s
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Old 07-13-2005, 12:36:38 AM
Bill Sherlock Bill Sherlock is offline
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Default Re: IH Clutch pulley

Scott,

I have a 1938 Parts Catalog EC-1-A for McCormick-Deering engine models "LA", "M" & "L" that lists the clutch pulley part numbers. It doesn't list parts for the "LB" models unfortunately.

Bill
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