Center Case: Inspection: Mainshaft

Check surfaces which contact sun gear, clutch drum, clutch hub, press flange, clutch piston, each bearing, etc. for damage, peel, partial wear, dents, bending, or other abnormal damage. If any is found, replace with new one.

Fig 1: Checking Surfaces For Damage, Peel, Partial Wear, Dents, Bending, Or Other Abnormal Damage
Courtesy of NISSAN MOTOR CO., U.S.A.