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Low whining sound from undercarriage

11-24-2019

Paul Workman

Join Date: Nov 2007

Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri

Posts: 6,466

Re: Low whining sound from undercarriage

Quote:

Originally Posted by Hib Halverson

(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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