M1 Maintenance Interval Operations
Number Title
60-02 Aerodynamic Component Inspection
72-01 Door Seals Lubrication
83-01 Air Conditioner Inspection
88-01 Hood Rear Support Lubrication
*
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 replace-
ment will vary depending on cleanliness of the fuel station system.
Table 3, M1 Maintenance Interval Operations
General Information 00
00–03 M1 Maintenance Interval Operations
108SD and 114SD Maintenance Manual, April 2021 00/5
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