RA-40 REAR AXLE AND SUSPENSION — Differential 18. INSTALL COMPANION FLANGE (a) Using SST, install the companion flange on the shaft. SST 09557-22022 (b) Coat the threads of a new nut with MP grease. (c) Using SST to hold the flange, tighten the nut. SST 09330-00021 Torque: 1,850 kg-cm (134 ft-lb, 181 N·m) 19. CHECK FRONT BEARING PRELOAD Using a torque wrench, measure the preload of the backlash between the drive pinion and ring gear. Preload: New bearing 18 - 27 kg-cm (6.7 - 13.9 in-lb, 1.0 - 1.6 N·m) Reused bearing 5 - 8 kg-cm (4.3 - 6.9 in-lb, 0.5 - 0.8 N·m) • If preload is greater than specification, replace the bearing spacer. • If preload is less than specification, retighten the nut 130 kg-cm (9 ft-lb, 13 N·m) at a time until the specified preload is reached. If the maximum torque is exceed while retightening the nut, replace the bearing spacer and repeat the preload procedure. Do not back off the pinion nut to reduce the preload. Maximum torque: 3,450 kg-cm (250 ft-lb, 338 N·m) 20. CHECK RUNOUT OF COMPANION FLANGE Using a dial indicator, measure the lateral and radial runout of the companion flange. If the runout is greater than the maximum, inspect the bearing. Maximum lateral runout: 0.1 mm (0.004 in.) Maximum radial runout: 0.1 mm (0.004 in.)