Re: Don't Understand???

Posted by Jon Hagen on January 30, 2007 at 09:53:28 from (69.26.29.104):

In Reply to: Re: Don't Understand??? posted by JOHN HARMON on January 30, 2007 at 09:07:50:

If the noise is just normal wear making parts noisy, then the thicker oil may be the way to go.

I think the point Bob is trying to make is, don't ignore a failing part untill it destroys the transmission.
My experience with that was with a Dodge 3 spd OD trans. This OD transmission is the old Chrysler 4 spd direct drive car transmission modified into an OD transmission. They reworked the gear ratios so you shift 1-2-4 than back to 3 for the OD ratio. The original design of that trans was that you would shift 1-2-3-4 and spend 90% of your time in 4th gear, that couples the input shaft directly to the output shaft. With no load on the gears/bearings during the 90% of the time you are in 4th gear.
When they modified this trans into an overdrive trans, You shift 1-2-4 direct,than back to 3 OD which loads all gears/bearings for 90% of your driving miles.
after 80,000 miles of running 3 OD, the trans developed an ever worsening bearing noise. I pulled the trans and found that the plastic ball cage in the input shaft bearing had worn out from the constant load of the 3 OD gear. Chrysler had discovered the problem,and the $15 replacement bearing had a steel ball cage. Had i continued to ignore the noise, I suspect I would have destroyed the transmission, atleast have broken gears and probibly the case.

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