[DeTomaso] ZF chatter

[L GRAY]

Jack, Chuck  and all. I have heard this rattle in ZF transaxles many times and upon tear down, found absolutely no reason for the noise. I assumed originally either the nose needle bearing directly behind the input seal housing was loose ( these will migrate into the case after some vibration in the driveline occurs sometimes ). Or the intermediate double row roller bearing has too much clearance. 
       I have installed a brand new set of bearings ( every bearing in the case) and still had this noise occasionally. 
I have thought on this many times and honestly think what is happening is one of the roller bearings ( which are a very loose fit on the shafts ) occasionally stops rotating and then gets grabbed by either the shaft or the oil film build up hydraulically binds the shaft and bearing together and the bearing.             " jumps" and vibrates as it accelerates.
       Don't know for sure ..........

Leslie A. Gray

On Oct 11, 2012, at 10:12 PM, JDeRyke at aol.com wrote:

> There's a 'mousetrap-style' anti-chatter spring that is supposed to hold 
> the throwout bearing and its cast iron carrier together as they rest on the ZF 
> nose-piece. After 40+ years, it may be that your spring broke or became 
> disconnected. If so, it will cause no trouble- just noise. This would be a good 
> excuse for getting a remote inspection viewer from Harbor Frieight., as was 
> described a couple of months ago in your POCA News.
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