Table 6 lists all maintenance operations that are to
be performed at the M4 maintenance interval. Main-
tenance operation numbers are reference numbers
used to help you find detailed instructions in this
manual on the maintenance operations to be per-
formed. Perform all M1 (Table 3), M2 (Table 4), and
M3 (Table 5) maintenance interval operations at the
M4 maintenance interval.
M4 Maintenance Interval Operations
Number Title
00-03 Perform All M1 Maintenance Interval Operations
00-04 Perform All M2 Maintenance Interval Operations
00-05 Perform All M3 Maintenance Interval Operations
09-01 Air Cleaner Element Inspection and Replacement
15-01 Alternator, Battery, and Starter Connections Check
20-02 Radiator Pressure Flush and Coolant Change
31-01 Frame Fastener Torque Check
33-05 Wheel End Inspection, Front Axle
*
35-03 Axle Lubricant and Filter Change, and Magnetic Strainer Cleaning
and Check
†
35-04 Wheel End Inspection, Rear Axle
*
46-02 Power Steering Fluid and Filter Change
60-01 Mirror Folding Check
*
Complete this operation at the mileage given for the applicable maintenance schedule, or annually, whichever
comes first.
†
For Dana Spicer axles, if using a Roadranger synthetic drive axle lubricant, the lubricant change interval is ex-
tended to 180,000 miles (288 000 km).
Table 6, M4 Maintenance Interval Operations
General Information00
00–06 M4 Maintenance Interval Operations
108SD and 114SD Maintenance Manual, April 202100/8
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