TH400, 3L80

Symptoms:

• Excess front endplay
• Forward clutch & sealing ring failure
• Reduced bearing, thrust washer & sealing ring life

Cause:
Worn components, machined hard parts, excess ring travel.

Correction:
This thrust washer takes up play between the forward clutch hub and direct clutch housing, reducing wear and salvaging valuable hard parts.

A pump that has been resurfaced or accumulated shaft spline wear creates excessive endplay of the forward and direct drums. This reduces sealing ring, clutch, bearing, and thrust washer life. Having the ability to shim both the lower unit sun gear and washers on all units addresses these problems.

• Oversized .015" and .030" washers take up the play between the forward clutch hub and the direct clutch housing, allowing front unit endplay to be reduced.
• Washers also stabilize the direct drum, reducing delayed reverse and improving 2-3 clutch circuit.
• Allows salvage of valuable hard parts.

Specifications:

• Material: Steel
• Thickness: 0.078"
• Outer Dia.: 1.780"
• Inner Dia.: 1.405"

SONNAX Installation Instructions