CAB AR 1221926 - Caterpillar

18. Use a suitable puller to remove bearing (24) from ring gear assembly (11).19. Remove twelve bolts (25) and ring gear (11) from case (26). 20. Remove cotter pin and nut (not shown) from pinion shaft. 21. Remove drive flange (27). Remove dust shield (not shown) from drive flange. 22. Remove shaft seal (28). Seal will be destroyed upon removal. Do not reuse. The part number of the seal is 1G-6720. 23. Place the carrier assembly in a suitable press and press pinion shaft (29) out of the carrier. 24. Use a suitable puller to remove bearing (30) from pinion shaft.25. Remove two bearing races and one bearing (not shown) from the carrier. The following steps are for reassembly of the drive axle.
Tool set up to determine pinion bearing shim thickness. 26. Measure gap (X2) between tool (A) and tool (D) with feeler gauge (31). To determine the dimension of X4, add X1 + X2 + X3.EXAMPLE: Dimension X1 + X2 = 191.80 mm (7.55 in) + dimension X3 = 15.0 mm (.59 in) [(half the diameter of tool (D)]Dimension X4 = 206.80 mm (8.14 in) 27. Determine the thickness of the tapered roller bearing. This will be dimension X5. 28. Read the value that is etched into the face of the pinion shaft. Add this value to dimension X5EXAMPLE: Dimension X5 = 90.0 mm (3.54 in)Etched value = 159.90 mm (6.3 in)Total = 206 mm (8.11 in)29. Subtract dimension X4 (Step 26) from the total reached in Step 28. The difference is the thickness of the shim to be installed.EXAMPLE: Dimension X4 = 206.80 (8.14 in)- total step 28 = 206.0 mm (8.11 in)Difference of = .80 mm (.031 in) 30. Install shim (32) (thickness determined in step 29) into the carrier bore. 31. Use a suitable driver to install the bearing race (33). 32. Use a suitable driver to install outer bearing race (34). 33. Heat bearing (30) to 95° C (203° F).34. Install bearing (30) onto pinion shaft (29). Make sure the bearing is correctly seated. 35. Install tool (E) on the collar of pinion shaft (29). The three roll pins in tool (E) should be installed about halfway into the ring. This allows the pins to be pushed into the ring when the pinion shaft is installed into the housing. 36. Guide the carrier onto the assembled pinion shaft carefully.37. Heat bearing (35) to 95° C (203° F) and slide it on the pinion shaft, making sure it is seated in the bearing outer race. 38. Use a suitable press and install dust shield (36) to drive flange (27). 39. Install drive flange (27), making sure it is seated on pinion shaft (29). 40. Install the castle nut and torque to 600 N m (444 lb ft). 41. Check the rolling torque of the pinion shaft. The rolling torque should be 1.1 - 2.3 N m (9.79 - 20.47 lb in). If the rolling torque does not fall within these values, adjust the torque