VALVE GP-CONTROL 1079643 - Caterpillar

CORRECT TOOTH CONTACT
ILLUSTRATION A
ILLUSTRATION B 1. Use the procedure that follows to check tooth contact: a. Put a small amount of Prussian blue, red lead, or paint on the bevel gear teeth.b. Turn the pinion shaft in both directions and check the marks made on the bevel gear teeth.c. See the illustration for the marks of the correct tooth contact.2. If the marks on the bevel gear look like the marks in Illustration A, use the procedure that follows: a. Remove some of shims (5).b. After some of the shims are removed, do Steps 6, 7 and 8 again in the Differential and Bevel Gear Adjustment Procedure.c. Check tooth contact again.3. If the marks on the bevel gear look like the marks in Illustration B, use the procedure that follows: a. Install more of shims (5).b. After more of the shims are installed, do Steps 6, 7, and 8 again in the Differential and Bevel Gear Adjustment Procedure. Several adjustments may be necessary before the tooth contact is correct. Free movement (backlash) must be correct before tooth contact can be checked.