General Information 00 Maintenance Service Table:
00–02 Maintenance Service Table Service Schedule Maintenance Interval Operation Maintenance Intervals Frequency Miles km Hours Initial Maintenance (IM) first 1000 1600 100 Schedule I * (Severe Service) vehicles that annually travel less than 6000 miles (10 000 km) Maintenance 1 (M1) every 1000 1600 100 Maintenance 2 (M2) every 5000 8000 500 Maintenance 3 (M3) every 10,000 16 000 1000 Maintenance 4 (M4) every 20,000 32 000 2000 Initial Maintenance (IM) first 9000 to 10,000 15 000 Schedule II (Short-Haul Transport) vehicles that annually travel less than 60,000 miles (100 000 km) Maintenance 1 (M1) every 9000 to 10,000 15 000 Maintenance 2 (M2) every 37,000 to 38,000 60 000 Maintenance 3 (M3) every 75,000 120 000 Maintenance 4 (M4) every 150,000 240 000 Schedule III (Long-Haul Transport) vehicles that annually travel over 60,000 miles (100 000 km) Initial Maintenance (IM) first 12,500 20 000 Maintenance 1 (M1) every 12,500 20 000 Maintenance 2 (M2) every 50,000 80 000 Maintenance 3 (M3) every 100,000 160 000 * For Schedule I (severe service) vehicles equipped with an hourmeter, use maintenance intervals based on hours of operation rather than distance traveled.
Use Schedule I (severe service) maintenance intervals for vehicles that operate under severe conditions, such as extremely poor roads, heavy dust accumu- lation, extreme climate, frequent short distance travel, construction-site operation, city operation (garbage truck), or farm operation. Maintenance 4 (M4) every 300,000 480 000 Heavy-Duty Trucks Maintenance Manual, October 2009 00/2