Case rep.sleeve TH350

Case rep.sleeve TH350 Servo Piston Sleeve PTFE Seal The intermediate servo bore becomes scored from repeated cycling. The spring side of the piston has line pressure present in R, N, D. Excess leakage at the servo piston results in low line pressure and delayed engagements. During forward speeds, oil loss affects shift quality and reduces clutch life. To salvage cases install Sonnax intermediate servo sleeve kit 35709-01K. Kit contains an aluminum sleeve and a replacement piston with a PTFE seal. This kit is a simple drop-in solution and requires no machining of the transmission case. Symptoms: Delayed engagement Low line pressure in Drive Low line pressure in Neutral Low line pressure in Reverse No engine braking in manual 2nd Cause: Case bore wear and oil loss at the intermediate servo. Correction: This drop-in sleeve and piston salvages the case, and eliminates the complaints caused by oil loss.