BALL JOINT AS 1483883 - Caterpillar

Illustration 39 g00655198
Note: The rolling torque specification that is measured at the pinion shaft is different for new bearings and for used bearings. Refer to the specifications in Step 54 for the rolling torque that is measured at the pinion shaft for new bearings and for used bearings.
Position Tooling (F) onto the splines of pinion shaft (38), as shown. Use Tooling (F) in order to check the rolling torque at the pinion shaft. The rolling torque of the pinion shaft should be 2.2 0.4 N m (19.00 4.00 lb in) for new bearings and 1.1 0.2 N m (10.00 2.00 lb in) for used bearings.
Repeat Steps 52 through 54 if the rolling torque is out of tolerance.
Illustration 40 g00640366
Note: The backlash gauge of Tooling (G) has four positions that are engraved on the face of the tool for measuring backlash. For this specific model, the dial indicator of Tooling (G) must be positioned on the "B" (Y) in order to check the backlash on the bevel gear.
Illustration 41 g00655213
Position Tooling (G) onto the splines of pinion shaft (38), as shown. To ensure an accurate backlash measurement, verify that the backlash gauge of Tooling (G) is positioned correctly on pinion shaft (38). Take three readings that are spaced approximately 120 degrees from each other relative to the bevel gear. All three readings must be within the specification of 0.25 + 0.10 - 0.07 mm (0.010 + 0.004 - 0.003 inch).
Illustration 42 g00655194
If the backlash measurement is incorrect, perform the following procedure. Install nuts (48). Maintain the bearing preload until the correct backlash is obtained. Repeat Step 56 after the adjustments are made.
The tooth contact between the pinion shaft and the bevel gear must be checked. Check the tooth contact on the pinion shaft by using the following procedure.
Apply a small amount of rouge compound onto the teeth of the bevel gear. Rotate the pinion shaft in both directions after the bevel gear is coated.
Illustration 43 g00622770
Correct Tooth Contact Setting
Refer to Illustration 43 for the correct tooth contact pattern. The tooth contact starts near the inside of the bevel gear toe. This area extends 25 to 50 percent of the tooth length on the bevel gear. A slight contact toward the toe on one side and toward the heel on the other side is acceptable.
Illustration 44 g00622774
Short Toe Contact Setting
If the pinion shaft is too far away from the bevel gear, short toe contact will be the result, as shown above. The teeth of the pinion will be in contact with the toe end of the convex faces (part that makes a curve toward the outside), and the top edge of the heel end of the concave faces (part that makes a curve toward the inside). Remove some of the shims from the housing assembly in order to correct the short toe contact setting. Repeat Steps 51 through 58.c if any adjustments were made to the tooth contact pattern on the pinion gear.
Illustration 45 g00622777
Short Heel Contact Setting
If the pinion shaft is too