Tool Required VB-FIX Required
- 4th Slip
- 5th Slip
- 6th Slip
- Code 734, 735, 729
- Kickdown shock
- Kickdown slip
Solenoid modulator valve or bore wear can result in excess or insufficient feed pressure to a variety of solenoids, adversely affecting shift functions.
The Sonnax wear-resistant sleeve and valve corrects circuit pressure loss and restores control over solenoid modulator valve function.
Oversized Solenoid Modulator Valve Kit
- End Plug Use in TF-81SC Only
Fits either of 2 locations.
The Aisin AW TF-80/81SC solenoid modulator valve establishes and controls feed pressure to a variety of solenoids. High or low solenoid feed pressure will adversely affect shift functions controlled by those solenoids. Wear at the inboard end of the solenoid modulator valve circuit causes excessive feed pressure. This floods the solenoids and reduces reaction time, resulting in harsh shifting and high line pressure. Wear at the outboard and mid-section reduces solenoid modulator pressure. This loss has the most effect on engagements and boost oil for line pressure rise. The Sonnax oversized solenoid modulator valve kit 39741-18K corrects wear in all areas, restoring pressure control and OE pressure calibration. This kit can be used in either of two valve body locations. The hardcoat anodized valve with annular groves and lengthened front spool combined with a wear resistant sleeve offer precision control and extended service life.
- Aluminum valve is hardcoat anodized to reduce wear and has added annular grooves for better centering in the bore.
- The highly wear-resistant sleeve and lengthened front valve spool provide 75% more sealing contact area