TM 9-2320-386-10 2-111 2-47. OPERATION OF TROOP SEAT – CENTER MOUNTED KIT a. General. The troop seat – center-mounted kit is installed to double troop transport capacity on M35A3 and M35A3C cargo trucks. b. To operate troop seats (1), refer to para. 2-28. Troop seats (1) are installed on opposite sides of pocket assemblies (2). 1 2 2 1