TRANSMISSION Ch 2 page 258 EXAMPLE 3: “LINE” CONTACT PATTERN The contact pattern convex and concave is too close to the top. The contact pattern is too small and is not tangent to the middle of tooth. An adjustment is necessary! Adjustment: Install thicker pinion shim! The convex contact pattern must be tangent to the tooth centerline. A minimum of 50% of the tooth depth (flank) is covered. The contact pattern in this example is still acceptable but not ideal. However, the contact pattern should not be any closer to the top. Note: An edge on the root of the tooth caused by the shot-peening process is allowed (see example). SHOP MANUAL