NOTE:For specific part number information, contact the Parts Department of your local dealership The following equipment is included in this group: Click OK.ģ17-7484 – Cat Communication Adapter 3 Group In the Communications tab of the Preferences dialog box, select the Communication Adapter option from the Communication Interface Device drop-down list. The requirements for Hydraulic Excavators B-Series (HEX) are the following: NOTE:For specific part number information, contact the Parts Department of your local dealership. NOTE:Engines that do not have the service connector may also require the 140-9442 ATA/CDL T-Adapter.