Oversize Actuator Feed Limit Valve* Gen 1 only, Reamer Required
OVERSIZE AFL VALVE & SLEEVE KIT
Symptoms:
No 4th
No 5th
No 6th
Low clutch oil pressure
Harsh shifts
Flare shifts
Cause:
Excess actuator feed limit (AFL) bore wear allows pressure loss that leads to driveability concerns.
Correction:
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized AFL valve.
The function of the actuator feed limit (AFL) valve is to provide regulated pressure to shift solenoids. Wear in the AFL bore causes low clutch pressure and results in transmission slips/harsh shifts. This eventually leads to a loss of 4th through 6th gears, and finally the loss of transmission function. Reconditioning the bore and installing Sonnax oversized AFL valve restores hydraulic control for revived shift operation in all ranges for GM Gen. 1 6T40, 6T45, 6T50 and GM Gen. 2 6T40, 6T45, 6T50 units
Symptoms:
Cause:
Excess actuator feed limit (AFL) bore wear allows pressure loss that leads to driveability concerns.
Correction:
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized AFL valve.
The function of the actuator feed limit (AFL) valve is to provide regulated pressure to shift solenoids. Wear in the AFL bore causes low clutch pressure and results in transmission slips/harsh shifts. This eventually leads to a loss of 4th through 6th gears, and finally the loss of transmission function. Reconditioning the bore and installing Sonnax oversized AFL valve restores hydraulic control for revived shift operation in all ranges for GM Gen. 1 6T40, 6T45, 6T50 and GM Gen. 2 6T40, 6T45, 6T50 units
SONNAX Installation Instructions