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Servo Release Check Valve,4L60,4L60e-65E,4L70E,82-Up

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Servo Release Check Valve - General Motors
Price: $20.18
Part Number: TAT-77701-076-SX
Servo Release Check Valve,4L60,4L60e-65E,4L70E,82-Up

Technicians would like to find a way to successfully extend the life of 3-4 clutches, and improve the 2-3 shift feel. They have been trying, with limited success, since the 700-R4 transmission was first introduced. Inadequate metering of 2nd gear band servo release oil causes 3-4 clutch failure. The 3-4 clutch and 2nd gear band are not properly synchronized. Sonnax has now developed a unique solution that combines an orifice with a ball check valve and solves these problems.

Features and Benefits

Improved design meters servo release oil, reducing 3-4 clutch failure.
Provides sufficient exhaust so that 3-2 downshifts are smooth.
Calibrates 3-4 clutch feed orifice without creating shift concerns.

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