ENGINE MAINTENANCE SCHEDULE
85
9/275, 9/305, 12/250, 17/240, 21/220
EXPLANATION OF MAINTENANCE SCHEDULE
The following is a brief explanation of the services listed in the preceding Engine Maintenance schedule.
Use the following procedure for fuel recommendations and specifications information. Refer to the Fuels, Lubricants and Coolants Section.
Maintain the correct oil and filter change intervals. It is a vital factor in preserving the integrity of an engine. Filters
must
be changed when the oil is
changed.
15.
Fuel Filter (Spin-On Type) -
Change
Replace the primary (or suction side) and the secondary (or pressure side) fuel filters at the same time.
16.
Lubricating Oil System -
Change
Cummins Inc. requires the use of a high quality, heavy duty engine oil. Use the following procedure for
lubrication oil and recommendations. Refer to the Fuels, Lubricants and Coolants Section.
17.
Lubricating Oil Filter (Spin
On) - Change
Cummins Inc. requires the use of a high quality, heavy duty engine oil. Use the following procedure for
lubrication oil and recommendations. Refer to the Fuels, Lubricants and Coolants Section.
18.
Supplemental Coolant
Additive (SCA) and
Antifreeze Concentration -
Check
Service interval is every oil change or 500 hours, or 6 months, whichever occurs first. Use the following
procedure for coolant specifications and recommendations. The change interval is 2 years. Antifreeze is
essential for freeze, overheat, and corrosion protection. SCA is essential for liner pitting and scaling protection.
20.
Batteries - Check
Follow the manufacturers' recommended maintenance procedures for the starter, alternator, batteries,
electrical components, engine brake, exhaust brake, charge-air cooler, radiator, air compressor, air cleaner,
refrigerant compressor, and fan clutch.
26.
Cooling System - Flush
This cooling system requirement to Flush at this scheduled maintenance includes: Drain, Flush, and Fill.
28.
Vibration Damper, Viscous -
Check
The service interval is 2 years.
31.
Overhead Set - Adjust
Reset valve lash, if needed, to nominal specifications.