- 3-4 Clutch burned
- Reduced band life
- Soft slide shifts
MTV boost loss and insufficient line rise.
Install the appropriate Sonnax TV boost valve kit.
TV Boost Valve Kit
- TV Boost Valve
- TV Boost Sleeve
.423" Dia., Factory-style sleeve (no O-rings)
A common problem in 700-R4 transmissions is burned bands and/or 3-4 clutches. This failure can be reduced by eliminating throttle boost oil leakage. The Sonnax replacement assemblies 77917-02K, 77917-03K, and 77917-04K eliminate these problems.
- TV boost valve and sleeve are manufactured from hardened steel for better wear resistance.
- Kits available in three sizes for .423", .471" and .500" diameters.