Product Description
TF80SC TF81SC Oversized Main Presssure Regulator & Boost Valve Kit
Also fits Volvo AM6, Opel (AF40), SAAB (AF40/6), Ford (AF21), Mazda (AW6A-EL)
Sonnax Part Number: 39741-01K
TOOLING REQUIRED
- F-39741-TL
- VB-FIX
Aisin AW TF-80/81SC transmissions may exhibit various concerns related to line pressure instability caused by wear in the main pressure regulator bore. This results in excess line pressure, harsh shifting and reduced cooler flow that leads to overheating. Additional problems such as poor line rise, erratic shift quality and burnt clutches can surface when the boost sleeve wears. Installation of Sonnax oversized main pressure regulator and boost valve kit 39741-01K re-establishes critical valve-to-bore clearance and restores normal line pressure operation.
- Hardcoat anodized aluminum valves combat premature wear
- Sleeve is made from high-quality aluminum to reduce wear
PACKAGE CONTAINS
- Pressure Regulator Valve
- Pressure Regulator Spring
- Boost Sleeve
- Boost Valve
SYMPTOMS
- Erratic line pressure
- Low line rise in Drive
- Low line rise in Reverse
- Bushing failure
- High line pressure in Reverse
CAUSE
CORRECTION
