RUBBER LINER 2780109 - Caterpillar

Differential and Bevel Gear(1) Bearing cup.(2) Bearing cone.(3) Adjustment ring.(4) Bevel gear.(5) Carrier.(6) Bolts.(7) Bevel Gear.(8) Bearing cup.(9) Bearing cone.(10) Bearing cup.(11) Bearing cone.(12) Washer.(13) Stake nut.(14) Case.(15) Bevel gear.(16) Sleeve bearing.(17) Thrust washer.(18) Pinion.(19) Gear washer.(20) Adjustment ring.(21) Bevel gear.(22) Bearing cone.(23) Bearing cup.(24) Carrier housing.(25) Shim pack.(26) Pinion.(27) Pinion housing.(28) Yoke.(29) Bolts.(30) Adjusting nut.(31) Adjusting nut lock.(32) Adjusting nut lock.(33) Bolts.(34) Adjusting nut. The following procedure controls bearing preload. The procedure provides the same results for new bearings and for used bearings. 1. Install bearing cone (2) and bearing cone (22) onto the differential group. Make sure that the bearing cone is fully seated. Lubricate the bearing cone with clean differential oil. 2. Press bearing cup (8) and bearing cup (10) in pinion housing (27). Make sure that the bearing cups are fully seated.3. Press bearing cone (9) on pinion (26). Make sure that the bearing cone is fully seated. Lubricate the bearing cone with clean differential oil. 4. Install pinion (26) in housing (27). Press bearing cone (11) onto the pinion shaft. Allow a small amount of end play to remain. Lubricate the bearing cone with clean differential oil. If you freeze the bearing cups, allow the parts to reach a uniform temperature. Then use a driver or a press to reset the bearing cups. The limit for freezing the bearing cups is ... -29°C (-20°F) . Remove any frost and wipe the bearing cups dry. Lubricate the bearing cups with clean differential oil in order to prevent rust on the baring cups. If you heat the bearing cones, allow the parts to reach a uniform temperature. Then use a driver or a press to reset the bearing cones. The limit for heating the bearing cones is ... 135°C (275°F)for a maximum of four hours. Lubricate the bearing cones with clean differential oil after the bearing cones have cooled in order to prevent rust on the bearing cones. 5. Secure the assembled pinion housing (27) in a holding fixture. Install washer (12) and nut (13).6. While you rotate pinion shaft (26), tighten nut (13) in order to achieve a preload rolling torque of ... 1.0 to 1.7 N m (9 to 15 lb inch). This is the torque that is needed in order to rotate pinion (26). Use a 125-5723Socket Wrench Assembly to tighten nut (13). Make sure that there is zero end play of pinion shaft (26). Reduce the preload rolling torque to ... 0.5 to 0.85 N m (4.5 to 7.5 lb inch)for used roller bearings with more than 100 hours of operation.7. If the preload rolling torque for the pinion exceeds the specifications, back off nut (13) by 1/8turn and reseat bearing cone (11) and washer (12) against nut (13). Perform Step 6 again.
Illustration AStake Nut and Tooling8. When the torque for rotating pinion (26) is correct, stake nut (13) by peening the collar into the slot in the pinion shaft. Proper peening requires the use of a punch with a spherical