3D Active Trac is a Traction Unit manufactured by Chattanooga Group. Model numbers 2789, 2789-INT, 2789-UK, 2789-AUS, 2789-EU, 2789-JPN, 2789-KOR, 2789-TAI, 2789-ARG, 2789-BRA, 2789-CHN, 2789-MEX, 2789-RUS, 2789-ZAF.
3D Active Trac Service Manual Serial Number 1614 and Above
