Cummins Westport T he Natural Choice

The Leading Natural Gas Engine For Truck And Bus. Lower Emissions, Improved Performance, Lower Costs. The ISL G is the natural choice in alternative-fuel engine technology. With industry-leading performance and firstfit OEM availability, it combines all the advantages of clean-burning, low-cost natural gas with “no compromise” power and torque for shuttle and school bus, urban transit, vocational and medium- and heavy-duty truck and tractor applications. Since the ISL G was introduced in 2007 as the first heavyduty engine to meet 2010 U.S. Environmental Protection Agency (EPA) and California...

Features And Benefits.  Air/Fuel Regulation – Cummins closed-loop electronic control system based on Cummins Interact™ System. Sensors for engine parameters, including intake manifold pressure and temperature, fuel inlet pressure, knock detection, air/fuel ratio and fuel mass flow.   Intake System – Charge air cooling reduces Air emissions by lowering intake manifold air temperatures. Scan the QR code to view the ISL G technology walkaround video.  High-Energy Ignition System – Provides better performance and longer service intervals and improved spark-plug and coil durability, plus self-diagnostics....

Gearing Recommendations. Extended Coverage. For best reliability and durability, the recommended maximum GVW for the ISL G in linehaul tractor applications is 66,000 lb (29,937 kg). Recommended gearing for optimal cruise in linehaul applications is 1600-1900 rpm. For vocational applications, the recommended gearing is 1800-2100 rpm. Consult your Cummins or Cummins Westport representative to discuss specific gearing guidelines for your application. For additional peace of mind, Cummins Westport offers a variety of extended coverage plans to meet every customer’s need. For full extended coverage...

Maintenance Intervals Maintenance Intervals ISL G Urban Transit Bus And Refuse Truck Maintenance Item Fuel Filter Coolant Filter Spark Plugs Fuel Filter Coolant Filter Spark Plugs Change Coolant Change Coolant Valve Adjustment** Valve Adjustment** Maintenance Item Follow vehicle manufacturer’s published recommendations Follow vehicle manufacturer’s published recommendations D efault interval is the hours stated. Interval is whichever comes first – hours, miles or time. *Requires natural gas engine oil (CES 20074). **Initial valve adjustment at 1,000 hours. R efer to QuickServe® Online or Owners...

r Phone 604-718-8100 Fax 604-718-8355 [email protected] cumminswestport. 101-1750 West 75th Avenue, Vancouver, B.C., Canada V6P 6G2 Bulletin 4971373 Printed in U.S.A. Revised 4/13 ©2013 Cummins Westport Inc.