MAINTENANCE SCHEDULE SCHEDULE A CONDITION Maintenance operation — A = Check and adjust if necessary. B = Clean C = Inspect and correct or replace if necessary. • Revise or transfer a trailer, using a camper or car-top carrier. • Repeated short trips of less than 8 miles (13 km) when outside temperature remains below freezing. • Extensive idling and/or low speed operation such as police, taxi or door-to-door delivery use. • Operating on dusty, rough, muddy, or salt spread roads. Maintenance operation — Service interval: Operation Months 1 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 Miles × 1000 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 km × 1000 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120 128 136 144 152 160 Steam Maintenance item See Reps. (em No.) MA-15 (item 71) MA-8 (item 2) MA-6 (item 2) MA-7 (item 6) MA-8 (item 9) MA-7 (item 7) MA-8 (item 11) MA-7 (item 4, 5) MA-4 (item 1) MA-8 (item 10) MA-9 (item 9) MA-8 (item 3) MA-8 (item 8) Months C R R A R R R R R R I I I R R I R R I I R R R I I R R R I I R R R I A every 72 months B every 6 months R every 6 months I E every 24 months A every 24 months R every 36 months I I every 60 months R every 72 months R every 72 months I every 72 months ENGINE Timing belt (1) V-belts Drive belts Engine oil* Engine oil filter* Engine coolant Exhaust pipes and mountings 7M-GE engines 7M-GTE engines 7M-GE engines 7M-GTE engines First period: 50,000 miles (80,000 km) or 72 months After first period: Every 50,000 miles (80,000 km) or 72 months I: R | R | R | R | R | R | R | R I: R | R | R | R | R | R | R | R I: R | R | R | R | R | R | R | R I: R | R | R | R I: R | R | R | R First period: 45,000 miles (72,000 km) or 36 months After first period: Every 15,000 miles (24,000 km) or 12 months R | R | R | R | R | R I | I | I | I | I | I FUEL Air filter * (2) Fuel lines and connections Fuel tank cap gasket Every 30,000 miles (48,000 km) or 36 months I | R | I | R | I | R I I IGNITION Spark plugs Chassis and other 7M-GE engines 7M-GTE engines Every 15,000 miles (24,000 km) or 12 months R | R | R | R I EV-C