Nissan Micra Transmission Assembly - Output Shaft & Idler Bearing Preload

This is a page from a factory service manual covering automatic transmission (transaxle) assembly procedures, specifically steps 22 and 23. Step 22 explains that if the transmission case, output shaft, tapered roller bearing, or front cover is replaced, the output shaft must be adjusted with shims: lubricate and press the bearing outer race into the converter housing, install two or three shims on the front cover using special tool ST33400001 (J26082), install the gasket and front cover, then measure output shaft preload with tool ST3127S000 (See J25765-A). Specified output shaft bearing preload is 0.15-0.32 N·m (1.5-3.3 kg-cm, 1.3-2.9 in-lb); the shaft should be turned at least 10 times before measurement and must rotate smoothly without binding. Available shims are listed in the S.D.S. Step 23 covers idler bearing preload adjustment: clean bolt threads, apply locking sealer, install the lock washer and idler gear bolt, temporarily tighten to 26-36 N·m (2.7-3.7 kg-m, 20-27 ft-lb), align the lock washer with the groove on the converter housing, rotate the output shaft five times, loosen and retighten the bolt to specified torque, then bend the lock washer and verify smooth operation. Figures referenced: SAT350, SAT352, SAT353, SAT354.