Usage:
All Products That Use Rotating Seal Rings Made Of Hard Black Plastic
Description of Change: Rotating seal rings used in power shift transmissions, torque converters and steering clutches are now available with a new material to improve seal ring life. Some of the new seal rings are manufactured with radial slots in both side faces to increase the cooling oil flow for some applications.
The new seal rings can be identified from the former seal rings by a yellow paint stripe on the outside diameter and/or two small dimples molded into both sides of the seal ring. Either way of marking the rings may be observed, but the permanent identification will be with the dimples.
Radial cooling slots have been added to some seal rings with the new material where the application needs increased cooling oil flow. Three slots, 0.50 mm (.020") wide by 0.50 mm (.020") deep and approximately 90° apart, are on both sides of the seal ring. The chart identifies the seal rings with slots and those without slots. Some seal rings have had slots added without a part number change. These seal rings are still direct replacements for the former seal rings without slots.
Adaptable To: The seal ring part numbers listed are direct replacements for the former seal rings.
When the seal rings are replaced because of excessive wear, the seal grooves in the carrier should be carefully inspected. The surface finish of the sides of the grooves should be no more than 0.32 ?m (13 ?"). Also, no burrs, nicks or dents should be present on the edges of the outer diameter of the seal groove in the carrier.
The seal ring bore in the mating clutch housings or manifolds should also be inspected for excessive roughness. The surface finish of the areas the seal ring contacts should not exceed 2.0 ?m (80 ?").