SERIES 60 ON-HIGHWAY ENGINE OPERATOR'S GUIDE All items are described in Preventive Maintenance Intervals. I – Inspect, service, correct or replace as necessary. R Replace. Table 4 On-Highway Truck and Parlor Coach Regular Maintenance Intervals (continued) All information subject to change without notice. 49 DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION Months 6 12 18 24 30 36 42 48 54 60 Miles/Km ( X 1000) 15/ 24 30/ 48 45/ 72 60/ 96 75/ 120 90/ 144 105/ 168 120/ 192 135/ 216 150/ 240 Item Procedures 17. Engine (Steam Clean) — — — I — — — I — — 18. Radiator & A/A Charge Cooler — I — I — I — I — I 19. Oil Pressure — — — I — — — I — — 20.
Battery Charging Alternator I I I I I I I I I I 21. Engine & Transmission Mounts — — — I — — — I — — 22. Crankcase Pressure — — — I — — — I — — 23. Fan Hub — — — — — — — I — — 24. Thermostats & Seals — — — — — — — I — — 25. Crankcase Breather — — — — — — — I — — 26. Engine Tune-Up — — — I — — — — — — 27. Vibration Damper Replace at major engine overhaul or earlier if dented or leaking.