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Old 11-24-2019   #4
Paul Workman
 
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,466
Default Re: Low whining sound from undercarriage

Quote:
Originally Posted by Hib Halverson View Post
(snip)


There are no "straight cut" gears in any version of the ZF S6-40.

Gears in the early 6-40s have a slightly smaller helix angle and that's why the early transmissions are a little more noisy and have a little higher input torque rating.
A picayune distinction, to be sure, Hib.
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