ISC Engine - RV Maintenance & Operation
 Cummins Southern Plains, Ltd. |
Printable Version
Cooling
Lubricating Oil
Fuel
Extended Shutdown Start Procedure
Ether
Component Maintenance
Idle / Warm-up / Cooldown
Cooling
Routine Maintenance Recommendations
• Check coolant level before every trip.
• Check SCA concentration level every 15,000 ml. / 6 mo.
• Change the coolant filter every 15,000 ml. / 6 ma.
• Drain and flush the cooling system every 60,000 mi./2 yrs. and refill with heavy-duty coolant - 50/50 mix of water and antifreeze.
Always use antifreeze. In addition to freeze protection, antifreeze is essential for overheat and corrosion protection.
The ISC requires supplemental coolant additive (SCA).
Definition of Heavy-Duty Coolant
A combination of 50/50 water and low silicate antifreeze (ethylene glycol or propylene glycol are acceptable). Protects to -34°F. Freeze protection decreases above 68% antifreeze. Antifreeze must meet ASTM 04985 (GM6038M) specs.
Fully formulated coolant must meet ASTM 06210 (EG) or ASTM 06211 (PG) specs.
How to Test the Antifreeze and Coolant Additive (SCA) Concentration
Every 6 months, test antifreeze concentration and coolant additive levels. Use Fleetguard part number CC2806 to test antifreeze concentration. Do not use a floating ball hydrometer. Use Fleetguard part number CC2602 to test coolant additive levels.
Fully Formulated Coolant
Fully formulated coolant, such as Fleetguard Complete, is recommended by Cummins and offers a vehicle owner the convenience of a pre-mixed antifreeze solution containing high quality water and the correct chemical balance of antifreeze and SCA.
Water Quality Requirements
Calcium/Magnesium Max. l7Oppm as CaCO3+MgCO3
Chloride Max. 4Oppm as Cl
Sulfur Max. lOOppm as SO4
A conservative approach to cooling system maintenance would include an analysis of your home- base tap water supply. Your Cummins distributor can provide this service as well as sample bottles and other coolant test devices. Consider using pre-formulated antifreeze when on the road or when water is unknown. The use of distilled water is also acceptable.
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Lubricating Oil
Routine Maintenance Recommendations
Oil Drain Interval Fleetguard Filter
15,000 miles / 1 year LF 9009
Replace oil filter at EVERY oil drain interval.
Multigrade vs. Straight Weight
Recommend high quality 15W40 oil API CH/SJ.
Why multigrade?
• Reduced deposit formation.
• Improved cranking in low ambient temperatures.
• Shortens time-to-block pressure in low ambients.
• Improved lubrication during high temperature operation.
• SJ rating required for lubrication of sliding tappets.
Synthetic Oil
May be used in the SC engine provided they meet performance and chemical requirements.
Recommended for use in ambient temperatures consistently below -13°F (-25°C) for improved engine cranking and flowability. Should NOT BE USED to extend oil drain intervals.
Engine Break-in Oil
Special break-in oil should not be used. If synthetic or synthetic blend oil has been used prior to an engine rebuild, petroleum-based oil should be used for the first oil change interval, after which use of synthetic oil can be resumed.
Supplemental Oil Additives
Supplemental oil additives such as friction-reducers and graphitizers should not be used unless the oil supplier can provide evidence of satisfactory performance. If there is any doubt about suitability of an oil, consult the oil manufacturer for a definitive recommendation, or data to establish that the oil has performed satisfactorily in Cummins engines.
Oil Analysis
Oil analysis, as a method to extend drain intervals, is NOT recommended. Different methods of measuring soot, lack of correlation among testing labs, and differing driving patterns and idle time are the basis of the recommendation.
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Fuel
Routine Maintenance Recommendations
Fuel filter should be changed at EVERY oil change.
Fleetguard fuel filter:
Spin-on Filter FS 1022*
Cummins P/N 3944269
*Denotes to transfer water sensor to new filter.
Low Sulfur Fuel and Fuel Lubricity
Fuel additives for lubricity are NOT required by Cummins when using commercially available low sulfur #2 diesel fuel or #1 / #2 winter blend diesel fuels.
Biocide Treatment
A biocide or fungicide can help when fuels are prone to contamination with bacteria or fungus (black slime).
Other Fuel Additives
Any fuel additive product should be accompanied with performance data supporting its performance and benefit. Engine failures caused by incorrect fuel are NOT covered under warranty. It is not the policy of Cummins to test, approve or endorse any product not manufactured or sold by Cummins.
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Extended Shutdown Start Procedure
When starting an engine that has not been operated for more than 30 days:
1. Engine oil pressure must be indicated on gauge within 15 seconds after starting. If oil pressure does NOT register within 15 seconds after starting, shut off engine immediately and follow the Troubleshooting Guidelines listed in the Operation and Maintenance Manual for low oil pressure.
2. Idle engine three to five minutes before operating under load.
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Ether
Ether MUST NOT be used for ISC engines. The ISC comes equipped from the factory with an integrated grid heater for cold starting.
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Component Maintenance
Valve Adjustment Interval
No adjustment required. Check at 150,000 miles. Reference the Operation and Maintenance Manual.
Air Filter and Intake System
Follow RV manufacturer’s recommended filter change interval. Visually inspect intake air components at each oil change for cracks or loose connections.
Air Compressor (if equipped)
Reference the Operation and Maintenance Manual for details.
Charge Air Cooler (CAC)
The long-term integrity of the CAC system is the responsibility of the vehicle and component manufacturers. However, CAC diagnostics can be performed by your Cummins distributor.
Vibration Damper
Inspection required at 60,000 mi. /2 yrs. which includes visual inspection for deformation. Reference the Operation and Maintenance Manual for details.
Fan Idler Pulley, Hub and Belt Tension
Inspection required at 30,000 mi. / 1 yr. which includes visual inspection of all components. Reference the Operation and Maintenance Manual for details.
Operation and Maintenance Manual Bulletin #3666262.
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Idle I Warm-up I Cooldown
Excessive Idle
Should be avoided when possible. Results in reduced fuel economy and increased engine wear. An automatic shutdown feature is available. Contact a Cummins distributor for details.
Engine Warm-up
Do not operate at full speed/load until coolant temperature reaches normal operating range. Do not operate above low idle until oil pressure is indicated.
Engine Cooldown
Prior to shutdown, an engine should be idled 3-5 minutes after extended full throttle or high power operation. However, under normal driving conditions, such as exiting a highway, engine operation is generally lighter in nature and thereby, the 3-5 minute cooldown is not necessary.
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