TRNW-2: 8L90 Check ball controversy

[Karen Hackett]

The one with 3 big check balls is for stop start.


----- Original Message -----
From: tucker tuckertrans.com via trnw2 (trnw2 at trnw.net)
Date: 11/12/25 17:55
To: Technical Discussion Forum (trnw2 at trnw.net)
Subject: TRNW-2: 8L90 Check ball controversy

Group, 
We have seen this 2 times this week.  We are working on 2022 8L90 4.3 with NO ESS.  Both of these have never been worked on.  According to everything I seen it only takes 1 large check ball on the upper VB.  One of the units had 3 large balls and the one today has 1 large ball in the middle and 1 by the pump.  So does anyone know what the deal is?  
Dan Tucker


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