3rd Gear\Direct Clutch Problems

Problem\Complaint : 

 3rd Gear shift keeps getting later and later as the vehicle warms up but

when it does shift, it feels pretty good. Customer claims that it used to 2-3 shift aprox 25 mph

and now it's 45 to 55 mph before it shifts. Upon teardown you find the direct clutches look good.

Air check the direct clutch drum assembly on the pump. 

(shown below)

(click on image for Larger Display)

The Drum requires way too much air to apply the clutch. The Outer lip seal is losing the lip of the seal 

(shown below)

(click on image for Larger Display)

Inspect the surface inside the drum where the lip seal rides for smoothness. Some drums have been found with machining marks in them that slowly damages the lip seal. Drums that are not smooth 

MUST BE REPLACED !

If you would like to see more info on this subject, drop Me a few lines at the link below !

 

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