GF1800E-R-2 TRANSMISSION Parts group GF1800E-R-2 C42000 TRANSMISSION CASE C44000 PTO GEAR CASE D00700 ONE-WAY SHAFT D01000 HST D01500 HST [COMPONENT PARTS] D10500 UNIVERSAL JOINT/FAN D12000 PTO SHAFT D13001 FRONT DIFFERENTIAL sale parts diagram catalog online construction equipment excavator tractor