Severe wear of the valve and bore allowing EPC and/or balance pressure loss.
The Sonnax secondary pressure regulator valve repair kit with upgraded materials and minimal clearances prevent wear and restore proper hydraulic function.
The continuous oscillation of the secondary regulator valve wears the valve spools and valve body bore at the contacting surfaces. Such wear results in TCC pressure irregularities and valve instability. If pressure is high, harsh lock-up clutch engagement can result. If the pressure is too low, the TC clutch cannot achieve complete lock-up. Continuous clutch slippage will lead to burned clutch material and converter. Under these conditions loss of mileage and poor drive-ability are to be expected.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
January 21, 2013
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December 21, 2012
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Contact a Sonnax Parts Distributor.