Side Bearing Preload & Final Assembly, 190 Model Axle

Fig. 37 Side bearing shim thickness:

1. If hypoid gear set, carrier, differential case or side bearing have been replaced with new ones, adjust the side bearing preload with adjusting shim. The required thickness of adjusting shim can be calculated by the following formulas: T1 = (A - C + D - H') 0.01 + 0.175 + E; T2 = (B - D + H') 0.01 + 0.150 + F; where T1 = required thickness of left side bearing adjusting shim in millimeters, Fig. 37, T2 = required thickness of right side bearing adjusting shim in millimeters, Fig. 37, A = figure marked on the left side bearing housing of gear carrier, B figure marked on the right side bearing of gear carrier, C & D = figure marked on the differential case, E & F: = differences in width of left or right side bearing against the standard width (20.00 mm) in millimeters, H = figure marked on the ring gear and figures for A, B, C, D and H are dimensional variations in a unit of 1/100 mm against each standard measurement. If values signifying A, B, C, D and H are not given, regard value as zero and compute.
2. Install determined side bearing adjusting shim on differential case, and press left and right side bearing inner races in.
3. Install differential case assembly into gear carrier, tapping with a rubber mallet.
4. Align mark on bearing cap with that on gear carrier, and install bearing cap on carrier. Torque bolts 36-43 ft. lbs. on all other models.

Fig. 38 Measuring ring & pinion backlash:

5. Measure ring gear-to-drive pinion backlash, Fig. 38. If backlash is too small, remove shims from left side and add them to right side. To reduce backlash, remove shims from right side and add them to left side.
6. At the same time, check side bearing preload. Bearing preload should be 10.4-17.4 inch lbs.