General Information 00 M1 Maintenance Interval Operations Table: 00–07 The M1 Maintenance Interval Operations table lists all maintenance operations that are to be performed at the M1 maintenance interval. Maintenance opera- tion numbers are reference numbers used to help you find detailed instructions in this manual on the maintenance operations to be performed. IMPORTANT: After performing all operations listed in this table, perform all daily, weekly, and monthly maintenance operations listed in the "Pretrip and Post-Trip Inspections and Maintenance" chapter of the Western Star® Driver’s Manual .
M1 Maintenance Interval Operations for Service Schedules I and II Maintenance Operation Number Operation Description Check 00–06 Lubrication and Fluid Level Check 13–01 Air Compressor Inspection 20–01 Coolant Inspection 26–06 Allison and Eaton Fuller Transmission Breather Check 31–01 Fifth Wheel Inspection 31–06 Premier 690 Coupling Inspection 32–01 Suspension Inspection 33–03 Tie Rod Inspection 35–03 Drive Axle Breather Check 40–01 Wheel Nut and Rim Nut Torque Check 40–02 Tire Check 41–01 Driveline Inspection 42–02 Air Dryer Inspection 42–03 Air Dryer Desiccant Replacement (with an oil-coalescing desiccant cartridge) * 42–07 Brake Inspection 42–08 Versajust Slack Adjuster Inspection and Lubrication 46–01 Drag Link Inspection 47–01 Fuel Filter Replacement 47–02 Fuel Tank Band Nut Tightening 49–01 Exhaust System Inspection 60–03 Aerodynamic Component Inspection 83–02 HVAC Air Filter Cleaning and Replacement * If equipped with an oil-coalescing desiccant cartridge, replace the cartridge once a year, regardless of mileage.
Otherwise use the M4 maintenance interval. Complete this procedure every 25,000 miles (40 225 km), 3 months, or 500 operating hours, whichever comes first. Table 9, MI Maintenance Interval Operations for Service Schedules I and II Western Star Maintenance Manual, September 2015 00/12