General Information 00 Maintenance Service Table:
00–02 Maintenance Service Schedule Table Service Schedule Maintenance Interval Operation Maintenance Intervals Initial Maintenance (IM) first 1000 1600 100 Frequency Miles km Hours Service Schedule I * (severe service) vehicles that travel up to 60,000 miles (100 000 km) annually 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 12,500 20 000 Service Schedule II (long-haul transport) vehicles that travel over 60,000 miles (100 000 km) annually Maintenance 1 (M1) every 12,500 20 000 Maintenance 2 (M2) every 50,000 80 000 Maintenance 3 (M3) every 100,000 160 000 Maintenance 4 (M4) every 300,000 480 000 * For Service Schedule I (severe service) vehicles equipped with an hourmeter, use maintenance intervals based on hours of operation rather than distance traveled.
Use Service Schedule I (severe service) maintenance intervals for vehicles that operate under severe conditions, such as extremely poor roads, heavy dust accumulation, extreme climate, frequent short distance travel, construction-site operation, logging, city operation, or farm operation. Table 1, Maintenance Service Schedule Table Western Star Maintenance Manual, September 2015 00/2