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Harry Ferguson Tractors Discussion Forum

broken teeth on cam

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11-21-2006 17:42:36

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Should a camshaft gear with two broken teeth (180 degrees apart) warrant a new gear replacement? Thanks you!

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Jim in OH

11-22-2006 06:29:30

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Re: broken teeth on cam in reply to nh, 11-21-2006 17:42:36

Also, I'd want to know why two teeth 180 degrees apart are damaged... for one thing, the crankgear (which turns twice for each turn of the cam) would be contacting with the same tooth at both damaged places on the cam... so I'd look at the crank gear also as a possible cause... (pic is for illustration only... it is not the tractor engine).... Jim

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11-22-2006 15:59:11

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Re: broken teeth on cam in reply to Jim in OH, 11-22-2006 06:29:30

Hey Jim, the crankshaft gear looks good....ie.. not broken teeth, etc. Any ideas as to why this might be so. Would it make sense to go ahead and replace both gears just to be safe?

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Jim in OH

11-22-2006 20:14:39

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Re: broken teeth on cam in reply to nh, 11-22-2006 15:59:11

These gears are normally so lightly loaded that it is a mystery to me why there is damage, that is why I was curious to find a cause. If there is one tooth on the crankgear that is off (maybe from the factory), then it will increase the stress of the passing tooth of the camgear... I would at least carefully inspect the crank gear, because I can't think of any other cause.. but it went 50 years.. it will probably go another 50 with just a new camgear.... so I wouldn't make it a major issue... Jim

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gerard

11-22-2006 12:37:16

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Re: broken teeth on cam in reply to Jim in OH, 11-22-2006 06:29:30

As a matter of interest - is that motor a flathead V8?

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Jim in OH

11-22-2006 13:46:34

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Re: broken teeth on cam in reply to gerard, 11-22-2006 12:37:16

yes.. I think so.. not mine, just a pic I found..Jim

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gerard

11-22-2006 12:37:04

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Re: broken teeth on cam in reply to Jim in OH, 11-22-2006 06:29:30

As a matter of interest - is that motor a flathead V8?

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11-22-2006 03:11:32

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Re: broken teeth on cam in reply to nh, 11-21-2006 17:42:36

Thanks man! Thats all I need to hear- Happy turkey day.....

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Mike Veen

11-21-2006 18:06:50

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Re: broken teeth on cam in reply to nh, 11-21-2006 17:42:36

If you don"t fix it bad things will happen.More will break,then it will go out of time,then rods will bend ,then valves will hit pistons,then you will be (fubar).Anyways fix it now while it"s still cheap to do so.

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