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  #1  
Old 10-22-2010, 12:55 PM
Mizar N68X Mizar N68X is offline
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Join Date: Sep 2010
Location: Illinois
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Default Original transmission "KNOCK"

Hello OCC Group,
My CCO has a transmission noise.
It is not really that bad but wanted to know if the thumping noise is normal or am I due for rebuild. Most noticabally in 1st and reverse.

Also my CC 70 has the same noise but just in 2nd gear.
Thump Thump Thump....
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  #2  
Old 10-22-2010, 01:04 PM
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Matt G. Matt G. is offline
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Location: Wichita, KS
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I would take the shifter off and see if any of the gears are missing a tooth.
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  #3  
Old 10-22-2010, 08:02 PM
Mizar N68X Mizar N68X is offline
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Quote:
Originally Posted by Matt G. View Post
I would take the shifter off and see if any of the gears are missing a tooth.
Thank you for the reply Matt!
OK I will pull the shifter tomorrow.
If I do not find a bad gear, could it be a bad bearing?
Is there a ring gear like in a car rearend?
Is it possible that the mower sat with moisture"Water" in the trans and rusted a spot on the gear?
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  #4  
Old 10-22-2010, 08:13 PM
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darkminion_17 darkminion_17 is offline
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Ahh,
Thumping noise,More than likely and more likely, your first and reverse idler gear is missing some teeth.Or you are missing a tooth on the first and reverse gears...or both.
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  #5  
Old 10-22-2010, 10:36 PM
Mizar N68X Mizar N68X is offline
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Quote:
Originally Posted by darkminion_17 View Post
Ahh,
Thumping noise,More than likely and more likely, your first and reverse idler gear is missing some teeth.Or you are missing a tooth on the first and reverse gears...or both.
Well that just stinks!!!
OK Darkminion, I will let you guys know what I find.....
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  #6  
Old 10-24-2010, 08:42 PM
Mizar N68X Mizar N68X is offline
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Hello Group,
I have not pulled the rear end cover or the shifter to see what is making the noise yet but thought since I was going into town tomorrow I would get replacement oil-fluid for the rear axle so it would be on-hand for when I do.
What gear oil should I buy for the rear axle of my original CC?
Thanks in advance for your reply.
Oh. Is the rear axle cover gasket available at CC dealer?
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  #7  
Old 10-24-2010, 08:47 PM
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Matt G. Matt G. is offline
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Hytran. The rear cover gasket can be obtained from CC or from a CaseIH dealer, same for the the Hytran. You can also get Hytran from a Case construction equipment dealer, too.
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