Maintenance Schedules
Schedule
Maintenance Intervals
Maintenance Interval
Frequency
Mileage
km
Hours
Schedule I
*
(severe service)
for vehicles that travel up to
6,000 miles (10,000 km)
annually
Initial Maintenance (IM)
first
1000
1600
100
Maintenance 1 (M1)
every
1000
1600
100
Maintenance 2 (M2)
every
4000
6400
400
Maintenance 3 (M3)
every
8000
12 800
800
Maintenance 4 (M4)
every
16,000
25 600
1600
Maintenance 5 (M5)
every
32,000
51 200
3200
Schedule II
(short-haul transport)
for vehicles that travel 6,000
miles (10,000 km) or more
annually
Initial Maintenance (IM)
first
8000
12 000
—
Maintenance 1 (M1)
every
8000
12 000
Maintenance 2 (M2)
every
16,000
24 000
Maintenance 3 (M3)
every
32,000
48 000
Maintenance 4 (M4)
every
64,000
96 000
Maintenance 5 (M5)
every
128,000
192 000
Schedule III
(long-haul transport)
for vehicles that travel 60,000
miles (100,000 km) or more
annually
Initial Maintenance (IM)
first
25,000
40,200
—
Maintenance 1 (M1)
every
25,000
40,200
Maintenance 2 (M2)
every
50,000
80,400
Maintenance 3 (M3)
every
50,000
80,400
Maintenance 4 (M4)
every
100,000
160,800
Maintenance 5 (M5)
every
300,000
482,400
*
For Schedule I vehicles equipped with an hourmeter, use maintenance intervals based on hours of operation rather than mileage.
Table 1, Maintenance Schedules
General Information
00
00–01 Determining Scheduled Maintenance Intervals
108SD and 114SD Maintenance Manual, April 2021
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Summary of Contents for 108SD 2021
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