Transaxle Side

Drive a new oil seal to transaxle. Refer to "SIDE OIL SEAL ", "DIFFERENTIAL SIDE OIL SEAL REPLACEMENT ".
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.

Fig 2: Aligning Drive Shaft

Courtesy of NISSAN MOTOR CO., U.S.A.

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.