General Information 00 M4 Maintenance Interval Operations Table: 00-10 The M4 Maintenance Interval Operations table lists all maintenance operations that are to be performed at the M4 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. Perform all maintenance interval operations in M1, M2, and M3 when performing M4 maintenance interval opera- tions.
M4 Maintenance Interval Operations for Service Schedules I, II, and III M4 Maintenance Interval Operations for Service Schedules I, II, and III Maintenance Operation Number Operation Description Check 00–07 Perform all M1 Operations 00–08 Perform all M2 Operations 00–09 Perform all M3 Operations 20–02 Radiator Pressure Flushing and Coolant Changing 26–05 Allison Transmission Fluid and Filter Changing 42–12 Bendix Air Dryer Desiccant Replacing (AD–2) 42–13 Bendix Air Dryer Desiccant Replacing (AD–4 or AD–9) 42–23 Meritor WABCO System Saver 1000 Air Dryer Desiccant Replacing Heavy-Duty Trucks Maintenance Manual, October 2009 00/17