AT-76 A340E(Others) AUTOMATIC TRANSMISSION - PLANETARY SUN GEAR AT1642 4. INSTALL THRUST WASHER HINT: Make sure that the lug shapes match the holes on the sun gear input drum. Upward AT1643 5. INSTALL ASSEMBLED NO.1 ONE-WAY CLUTCH AND SECOND BRAKE HUB ONTO PLANETARY SUN GEAR Free Lock Hold Turn AT8440 6. CHECK OPERATION OF NO.1 ONE-WAY CLUTCH Hold the planetary sun gear and turn the second brake hub. Check that the second brake hub must be able to turn freely clockwise and locks counterclockwise.