WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
Remove snap ring from direct clutch drum with a flat-bladed screwdriver.
Courtesy of NISSAN NORTH AMERICA, INC.
Remove drive plates, driven plates, dish plate and retaining plates from direct clutch drum.