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Username Post: TH400 whine        (Topic#357746)
dav56 
Senior Member
Posts: 254
dav56
Loc: sumner,washington
Reg: 01-13-03
08-21-19 04:04 AM - Post#2773735    

I have a TCI th400. 7,200 miles on it. It whines in 1st gear . Sounds like a gear drive. Then clunks when shifting into 2nd at low speed. 2-3 shifts fine,no noise. No noticeable noise driving at speed. Anyone know what could be causing this?


http://www.cardomain.com/ride/503656


 


Shepherd 
Frequent Contributor
Posts: 1882

Loc: Lake George, NY
Reg: 11-11-15
08-21-19 03:57 PM - Post#2773778    
    In response to dav56

Usually caused by the bearings in the planetary assy.



 
56sedandelivery 
Dedicated Member
Posts: 5692
56sedandelivery
Age: 68
Loc: Everett, Wa.
Reg: 02-26-08
08-21-19 08:37 PM - Post#2773798    
    In response to dav56

How about reverse gear, does it whine also? Sounds like the rear planetary assembly pinions/sun gear/wear bushings are shot; same as my DD truck that I have to swap the trans out on. I am Butch/56sedandelivery.




 
dav56 
Senior Member
Posts: 254
dav56
Loc: sumner,washington
Reg: 01-13-03
08-23-19 05:17 AM - Post#2773867    
    In response to Shepherd

Does that mean I would have to replace the bearings. Or the complete planetary assembly? I never noticed the noise in reverse. It does clunk a little going into reverse?

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Edited by dav56 on 08-23-19 05:19 AM. Reason for edit: No reason given.

 
56sedandelivery 
Dedicated Member
Posts: 5692
56sedandelivery
Age: 68
Loc: Everett, Wa.
Reg: 02-26-08
08-23-19 08:38 AM - Post#2773880    
    In response to dav56

IF it's the rear planetary assembly, it should be noisy in first AND reverse, as that planetary provides the low gear reduction to those gears; a one time clunking, when going into reverse, sounds more like something more rear end tolerance or universal joint related. The planetary will need to be rebuilt or replaced; easier to just replace. The bigger concern are the metallic particles from wear, and getting circulated throughout the trans/converter/cooler. Complete rebuild and flush, and I don't look forward to doing that in this heat we're having here. I may just let a friends son, who has an automotive shop, just do the R and R with my spare trans, and do a cooler flush. I am Butch/56sedandelivery.




 


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