6HP26, 6HP26X

Tool Required

Cannot be used in units that have a 053 separator plate.

Symptoms:

• 6th Slip
• 2nd Slip
• Clutch failure
• Poor shift quality
• Ratio errors

Cause:
Oscillation of the clutch C valve causes bore wear that prevents proper hydraulic actuation of clutch C.

Correction:
Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized clutch C regulator valve.

In listed Ford and ZF6 transmissions, clutch C is applied in 2nd and 6th Gears. As the clutch C regulator valve oscillates and strokes over time, bore deterioration results, allowing pressure loss that prevents proper hydraulic control of the clutch. This can cause slipping, ratio codes, poor shift quality in 2nd and 6th Gears as well as clutch C failure.

Reconditioning the bore and installing this Sonnax oversized clutch C regulator valve restores normal shift action and clutch control for revived Forward operation.

• Sonnax oversized valve matches OE calibration
• Hardcoat anodized aluminum valve combats premature wear

99793K Instruction Sheet