Product Description
ORIGINAL RELEASE 124740-TL40 WORKS IN GEN-1 ONLY! TO UPDATE TO WORK IN GEN-2 APPLICATIONS REQUIRES PURCHASE OF JIG PLATE 124740-JP40.
Tooling Required
6T70 (GEN-2) 6T75 (GEN-2) 6T80 (GEN-2) Oversized Actuator Feed Accumulator Piston Kit
I
GM Gen. 2 6T70/75/80 units often suffer shift abnormalities caused by excess wear in the actuator feed accumulator piston bores. This wear allows actuator feed limit fluid loss which prevents proper regulation of oil pressure supplied to control solenoids, resulting in harsh or soft shifts, solenoid codes and clutch failure.
Reconditioning the bore and installing Sonnax oversized actuator feed accumulator piston kit 124740-65K re-establishes correct clearance for revived shift control in all ranges.
- Hardcoat anodized aluminum valve combats premature wear
- Springs calibrated to match OE function
Symptoms
- Harsh shifts
- Soft shifts
- Solenoid performance codes
Cause
Bore wear can cause excess leakage in the actuator feed limit circuit which can affect solenoid function resulting in various drivability issues.
Correction
Restore hydraulic control by reconditioning the bore and installing Sonnax oversized actuator feed accumulator piston kit.
Contents
- Accumulator Pistons (6)
- Springs (6)
