HOSE BK 4568428 - Caterpillar

ALIGNMENT OF BEVEL GEAR AND PINION
CORRECT TOOTH CONTACT SETTINGc) If the pinion shaft is too far away from the bevel gear, short toe contact will be the result as shown. The teeth of the pinion shaft will be in contact with toe ends of convex faces (part that makes a curve toward the outside), and top edge of heel end of concave faces (part that makes a curve toward the inside). To correct this, add shims between the pinion shaft and bearing cage of the transmission. Check gear clearance (backlash) and tooth contact again.
SHORT TOE CONTACT SETTINGd) If the pinion shaft is too near to the center of the bevel gear, short heel contact will be the result as shown. The teeth of the pinion shaft will be in contact with the toe ends of concave faces (part that makes a curve toward the inside) and the heel ends of convex faces (part that makes a curve toward the outside). To correct this, move the pinion shaft away from the bevel gear by removal of shims between the bearing cage of of the transmission and pinion shaft. After this is done, check the gear clearance (backlash) and tooth contact again. Several adjustments must be made for the correct tooth contact setting. If the gear clearance (backlash) is changed, the tooth contact setting will change.
SHORT HEEL CONTACT SETTING2. Remove all of the prussian blue or red lead from the bevel gear and pinion shaft.