CHASSIS INFORMATION - 10
195
CAY M A N 2 0 0 7
ENGINE OIL
Cummins Engine Requirements:
The maintenance guidelines in the Cummins
Operation & Maintenance Manual are the
recommendations for the engine to extend the
engine life and improve performance, resulting
in cost ef cient operations. A good maintenance
schedule begins with a daily awareness of the
engine and its various systems.
A high grade 15W-40 multi-viscosity
heavy duty lubricating oil meeting Cummins
Engineering Speci cation CES 20071 or
CES 20076, American Petroleum Institute
(API) speci cation CH-4 which can be
used as an alternative to CES 20071 is
recommended. Lubricating oils meeting API
CG-4 speci cations may be used at a reduced
drain interval. A critical factor in maintaining
engine performance and durability is the use of
high grade multigrade lubricating oil and strict
adherence to the maintenance service intervals.
A straight weight or monograde lubricating oil
is not recommended. Shortened drain intervals
may be required as determined by a close
monitoring of the lubricating oil condition by
means of an oil sampling program. The use
of oil analysis to extend drain interval is not
recommended. There are numerous variables
which is the basis of the recommendation.
Synthetic oils API category III speci cations
are recommended for extreme cold temperatures
only. Low viscosity oils used for winter
operations will aid in starting. Synthetic oils,
or oil with adequate low temperature properties
used for Arctic operations where the engine
cannot be kept warm when shut down, will aid
in starting. The use of synthetic oils should not
be used to extend drain intervals. Extended oil
change intervals can decrease engine life and
possibly affect the engine warranty.
Oil additives should not be used unless
the oil supplier or oil manufacturer has been
consulted and provided positive evidence or
data establishing satisfactory performance in the
engine.
NOTE:
The engine does not require a “break-
in” procedure.
INFORMATION:
Refer to the Engine Manufacturer’s
Owner’s Manual for details on the oil
maintenance schedule.
NOTE:
The Engine is filled with Texaco URSA
Super Plus SAE 15W-40 multi-viscosity
oil from the factory.
ENGINE SHUTDOWN
Allow the engine to idle three to ve minutes
after a full load operation. This allows adequate
cool down of pistons, cylinders, bearings and
turbocharger components. Under normal driving
conditions, exiting the highway is generally
lighter engine operation and the need for the
three to ve minutes is not necessary.
Extended Engine Shutdown
When the motorhome has been sitting for
30 days or more, verify all the uid levels are
correct. Follow the normal starting procedures.
If the oil pressure gauge does not register within
15 seconds, shut off the engine immediately to
avoid damage. Consult the engine manufacturer’s
owner’s manual for guidelines on troubleshooting
low oil pressure, or contact a quali ed service
technician. Allow the engine to idle for ve
minutes before operating under a load.
COOLANT SYSTEM
The cooling
system consists
of a radiator
mounted at
the rear of the
motorhome,
cooling fan,
transmission
cooler, and a
charge air cooler.
Steel tubes and
radiator hoses
allow engine
coolant to ow
between the radiator and the engine. The fan
draws air from the outside of the motorhome,
through the radiator and into the engine
compartment. These components working
together ensure that all the chassis systems
maintain proper operating temperatures.
A problem with one component may cause
problems with an entirely different system.
070201
Lubricating oil recommendations and specifi cations.
080208d
To Next Page
Loading...