Parts list: № Number Qty Name Options 1 AT477083 1 Track Idler Track Idler Wheel and Brackets 2 T320933 1 Roller Shell 3 T320934 2 Bushing 4 T320939 2 O-Ring 5 T320930 1 Shaft 6 T320932 2 Pin 7 T344432 1 Plug 8 AT441272 2 Seal Kit Next page: ST978529 Idler and Recoil Assembly ST978535 Spring Assembly, Standard Carriage