Tech Tips

Paper Based Material vs. Sintered Metal in Automotive Automatic Transmissions
August 07, 2018

There are applications where sintered metal is the preferred choice; however, in automotive automatic transmissions, compliance of paper based materials resulting in excellent load distribution and favorable friction characteristics make paper materials a much better and more durable choice. Read More

SMOOTH IS IN - ROUGH IS OUT
March 13, 2017

A serious misconception, still held by many, is that a rough steel surface is necessary for a "good clutch apply". Actually it IS NOT. A thin film of oil between the paper and the steel creates a powerful holding bond. The bonding created by this oil film makes it possible for a clutch pack to apply and release thousands of times without wear.

Water and Automatic Transmissions: A Rebuild In The Making
May 09, 2016

It doesn't take much of the wet stuff to create enough damage that the best solution is a rebuild. Read More

GM 6L80/90: Cracked or Split Sump Filter
March 30, 2016

That cracked or split sump filter may only be a symptom...Read More

Mean Effective Radius
February 05, 2015

If you have two friction plates that are identical, except for the inside diameter of the friction material, then you need to identify the mean effective radius of each plate.

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Plates of Different Thickness in the Clutch Drum
February 05, 2015

When installing steel plates of different thickness in a clutch drum, the placement of the thinner plates can be important. And, the ideal placement of those plates depends on which clutch drum you’re using.

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