M2 Maintenance Interval Operations
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Table. lists all maintenance operations that are to be performed at the M2 maintenance interval. Maintenance operation numbers are reference numbers used to help you find detailed instructions in this manual on the maintenance operations to be performed. Perform all M1 maintenance interval operations (see Table.) at the M2 maintenance interval.
Table 1, M2 Maintenance Interval Operations
- For driveline lubrication, the M2 maintenance interval is for Meritor drivelines only; for Dana Spicer drivelines see the M1 maintenance interval.
- Inspect the CNG fuel cylinder every 12 months regardless of mileage.
Table 1, M2 Maintenance Interval Operations
Table 2, M1 Maintenance Interval Operations
- For Detroit axles, complete this procedure once a year or at the following applicable interval, whichever comes first: every 5000 miles (8000 km) for Schedule I vehicles; every 25,000 miles (40 000 km) for Schedule II vehicles; or every 100,000 miles (161 000 km) for Schedule III vehicles.
- For driveline lubrication, the M1 maintenance interval is for Dana Spicer drivelines only; for Meritor drivelines see the M2 maintenance interval.
- If equipped with an oil-coalescing desiccant cartridge, replace the cartridge once a year, regardless of mileage. Otherwise use the M5 maintenance interval.
- Complete this procedure every 25,000 miles (40 225 km), 3 months, or 500 operating hours, whichever comes first.
- The automatic drain valve should be inspected every 6 months or 1500 operating hours, whichever comes first.
- M1 maintenance interval should be used as a general guideline; the actual frequency of filter element replacement will vary depending on cleanliness of the fuel station system.
Table 2, M1 Maintenance Interval Operations
Note: