Filter Overview with Service Intervals 7130 ­ 7430 Premium Tractors Activated Carbon Air Filter ­ L156225 Replace every 500 hours, once a year and as required ­ Never clean wet or dry Please order 2 Recirculation Cab Filter ­ L155288 with air conditioning Primary Engine Air ­ AL172781 Secondary Engine Air ­ AL167771 (7130 PR) Secondary Engine Air ­ AL167772 (7230 PR) Replace every 1500 hours or every two years as required Cab Air Filter ­ AL119095 Replace every 1500 hours or every 2 years and as required Please order 2 Engine Oil Filter ­ RE504836 Replace every 100, 500 hours and the 750 hours Primary Fuel Filter ­ RE529643 Replace every 500 hours Transmission Oil Filter ­ AL156625 Replace after 100, 750 hours and then every 750 hours Secondary Fuel Filter ­ RE522878 Replace every 500 hours Hydraulic Oil Filter ­ AL169573 Replace every 100, 750 and then every 750 hours ...