TG1860G TRANSMISSION Parts group TG1860G C00100 ENGINE PULLEY C00202 ELECTRIC CLUTCH C00400 BEARING CASE C30000 TENSION PULLEY C40000 HST C40601 HST 1 (PUMP) C40701 HST 2 (ARM) C62000 PTO TENSION PULLEY sale parts diagram catalog online construction equipment excavator tractor