Inspect the thrust needle bearing and the needle bearing for galling and rough movement.
Inspect the splines for excessive wear and damage. Check shaft bearing surface for scoring and excessive wear. Before installing the O-rings, wrap the shaft splines with tape to prevent O-ring damage. Lubricate all parts with ATF during assembly. Install the conical spring washer, 41 x 68 mm thrust washer in the direction shown. Replace the locknut and conical spring washer with new ones when assembling the transmission. Check the clearance of the 5th gear.