20th through 40th Maintenance for Service Schedules III and IV
Maint. No. Maintenance Interval
Service
Date
Service Schedules III and IV
Miles km
20 M1 and M2 500,000 805 000
21 M1 525,000 845 000
22 M1 550,000 885 000
23 M1 575,000 925 000
24 M1, M2, and M3 600,000 966 000
25 M1 625,000 1 005 800
26 M1 650,000 1 046 000
27 M1 675,000 1 086 000
28 M1 and M2 700,000 1 127 000
29 M1 725,000 1 167 000
30 M1 750,000 1 207 000
31 M1 775,000 1 248 000
32 M1 and M2 800,000 1 287 000
33 M1 825,000 1 328 000
34 M1 850,000 1 368 000
35 M1 875,000 1 408 000
36 M1, M2, and M3 900,000 1 448 000
37 M1 925,000 1 490 000
38 M1 950,000 1 529 000
39 M1 975,000 1 569 000
40 M1 and M2 1,000,000 1 609 000
Table 7, 20th through 40th Maintenance for Service Schedules III and IV
General Information 00
Vehicle Maintenance Schedule Tables: 00–03
Century Class Trucks Maintenance Manual, January 2007 00/7