SONNAX 77701-076 CAPSULE WITH CHECK BALL, 700R4 / 4L60E EXTENDS 3-4 CLUTCH LIFE

$ 23.00

In stock

SKU: PATC-S74480C, SX 77701-076, 41, CC CS74480D, a20 ra b14 Categories: , , , , Tags: ,

Description

CAPSULE WITH CHECK BALL, 700R4 / 4L60E EXTENDS 3-4 CLUTCH LIFE

700R4, 4L60E, 4L65E, 4L70E

Servo Release Check Valve Kit

Part No. 77701-076

  • Valve
  • O-Ring

2nd Gear Servo Release

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 GM 4L60 (700-R4) and 4L60-E series transmissions were 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 servo release check valve kit 77701-076 is a unique solution that combines an orifice with a ball check valve to resolve these problems.

  • 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
  • Don’t confuse the OE checkball with the one found in Sonnax servo release check valve kit (77701-076). Although they look similar, they have completely different functions. The Sonnax kit is a unique solution that combines an orifice with a ball check valve to tune 3-4 shifts, but it MUST be used with a properly functioning OE 3rd accumulator checkball assembly.

Additional information

Weight 1 lbs
Dimensions 4 × 4 × 1 in