WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
Install 3rd one-way clutch to front sun gear.
Courtesy of NISSAN NORTH AMERICA, INC.
Install snap ring to front sun gear with a flat-bladed screwdriver.
Courtesy of NISSAN NORTH AMERICA, INC.
Check operation of 3rd one-way clutch.
Hold oil pump assembly and turn front sun gear.
Courtesy of NISSAN NORTH AMERICA, INC.
Check 3rd one-way clutch for correct locking and unlocking directions.
CAUTION:
If not as shown in figure above, check installation direction of 3rd one-way clutch.