Transaxle Side

Drive a new oil seal to transaxle. Refer to SIDE OIL SEAL RS5F70A "SIDE OIL SEAL RS5F51A ", "SIDE OIL SEAL RS6F51H ", "SIDE OIL SEAL RE4F03B " or "SIDE OIL SEAL RE4F04B ".
Set Tool along the inner circumference of oil seal.

Fig 1: Setting Tool Along Inner Circumference Of Oil Seal
Courtesy of NISSAN MOTOR CO., U.S.A.
Insert drive shaft into transaxle. Be sure to properly align the serrations and then withdraw Tool.
Push drive shaft, then press-fit circular clip on the drive shaft into circular clip groove of side gear.
After its insertion, try to pull the flange out of the slide joint by hand. If it pulls out, the circular clip is not properly meshed with the side gear.

Fig 2: Inserting Drive Shaft Into Transaxle With Tool
Courtesy of NISSAN MOTOR CO., U.S.A.