Cummins Every Time - Fire & Emergency

Cummins ISL combines High-pressure Common-Rail fuel injection with our patented Variable Geometry Turbocharger (VG Turbo) for superior performance. The VG Turbo constantly adjusts to deliver the precise amount of air for optimal performance at every rpm. The result is quicker throttle response with less turbo "lag." Your firefighters will appreciate the quicker acceleration every run. Ratings for the ISL range from 330 to 400 horsepower, with up to 1250 lb-ft of peak torque.

The roller followers also help give the ISL increased engine braking capacity (more than 330 braking hp with the optional C Brake™ by Jacobs®*) for improved control when stopping.

Plus, when you need rugged, reliable auxiliary power, there's no better choice than an Onan® genset. Cummins engines and Onan gensets are backed by the same worldwide network of distributors/dealers, so we're able to offer design, manufacturing and customer support synergies not found in any other company supporting the fire/emergency industry.

The ISL's outstanding fuel economy and extremely long maintenance intervals will benefit your fire department for years to come. For the final word on reliability and durability, be sure to read our standard warranty program.

The combination of superior performance from the ISL and strong support from our local distributor network are two reasons why Cummins is fast becoming the #1 choice for fire apparatus everywhere in North America.

For more information on this engine, download the ISL Fire And Emergency Applications Brochure. For details on the full lineup of Cummins engines for fire and emergency vehicles, download the Fire and Emergency Vehicle Engines Brochure.

^*C Brake is a trademark of Cummins Inc. Jacobs is a registered trademark of Jacobs Vehicle Systems. Jacobs is a registered trademark of Jacobs Vehicle Systems.

Engine Model	Advertised hp	Peak Torque	Governed Speed
ISL 400	400	1200 @ 1300	2200
ISL 370	370	1200 @ 1300	2200
ISL 350	350	1250 @ 1400	2100
ISL 350	350	1050 @ 1300	2200
ISL 330	330	1150 @ 1300	2100

A new High-Pressure Common-Rail (HPCR) fuel system maintains high injection pressures for optimum performance at every rpm. The new fuel system and revised gear train design combine to make the ISL up to 50% quieter in operation. All this, combined with a 24-valve cylinder head and centered injection, gives the ISL excellent combustion characteristics that result in outstanding fuel economy too.

You can depend on the ISL to last a long time, with replaceable mid-stop cylinder liners, articulated steel-top pistons, roller camshaft followers, a high-efficiency lube cooler, targeted piston cooling and many other heavy-duty features.

Specifications.

Advertised Horsepower	330-400 hp	246-298 kW
Peak Torque	1050-1250 lb-ft	1424-1695 N•m
Governed Speed	2100-2200 rpm
Clutch Engagement Torque	550 lb-ft	746 N•m
Number of Cylinders	6
Oil System Capacity	7.3 U.S. gallons	27.6 liters
Net Weight (dry)	1,555 lb	705 kg

Every heavy-duty Cummins ISL is designed for years of dependable use, with many design features found in every ISX and ISM engine. Including our patented VG Turbo, which has only one moving part in the hot exhaust stream (competitive turbos have dozens). Heavy-duty features deliver significant benefits:

Articulated steel-top pistons are stronger, help improve piston ring life.
Direct piston cooling nozzles lower piston temperatures for longer life.
Roller camshaft followers extend the camshaft life.
Self-tensioning belt drive system drives both fan and alternator for reduced maintenance and increased belt life.
Combination full-flow/bypass lube oil filter delivers better filtration for longer component life.
High-efficiency lube cooler lowers oil temperatures and improves lubrication.

Most Variable Geometry Turbochargers use flexible vanes, with literally dozens of wear points and individual parts constantly moving under intense pressure and heat.

The Holset Variable Geometry Turbocharger is different. It replaces the movable vanes with a simple sliding nozzle, eliminating dozens of parts and increasing dependability and durability. This patented design has already been proven highly effective and reliable in over 150,000 vehicles worldwide.

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Cummins ISL has been redesigned with a strengthened block and roller followers so that you can add the optional C Brake™ by Jacobs®*. Created by the manufacturer of the famous Jake Brake®** for big rigs, the C Brake has been optimized for use with the ISL, generating up to 330 braking horsepower. Not only will your fire apparatus be safer on the road, you'll save money down the road. Because you'll be using your service brakes less, they could last substantially longer.

^*C Brake is a trademark of Cummins Inc. Jacobs is a registered trademark of Jacobs Vehicle Systems.

^**Jake Brake is a registered trademark of Jacobs Vehicle Systems.

Oil and oil filter changes for the ISL are set at 500-hour, 6-month or 20,000-mile (32,000 km) intervals. The overhead adjustment doesn't need to be checked for 5,000 hours, 48 months or 150,000 miles (240,000 km).

The primary fuel filter changes are set at 500-hour, 6-month or 20,000-mile (32,000 km) intervals. Secondary fuel filter changes can go longer, at 1,000-hour, 12-month or 40,000-mile (64,000 km) intervals.

The standard coolant change interval is 240,000 miles (385,000 km). However, Cummins ISL is fully compatible with long-life coolant/antifreeze formulas which allow changes out to every 600,000 miles (960,000 km) or 6 years. If the engine is equipped with a coolant filter, it will need to be replaced on the same intervals as the oil filter. Follow maintenance guidelines recommended by the manufacturer for safe use with extended service intervals.

See Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your Cummins distributor for fast, accurate service. At Cummins, we make every minute count.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Every Cummins ISL fire apparatus engine is backed by a base warranty of 5 years or 100,000 miles (160,935 km), whichever comes first, including parts, labor and towing.

For more information, see the Fire Apparatus Warranty Certificate, Bulletin 3381161.

There is no deductible for covered repairs during the first 2 years of the base warranty. A deductible of $100 (U.S. dollars) per repair applies during the 3rd, 4th and 5th years of the base engine warranty.

Extended Coverage.

Our extended coverage plans include 100% parts and labor with a $100 deductible per repair event after the base warranty expires. Plan 1 gives you complete engine coverage for 5 years and your choice of 150,000 miles (241,402 km) or 200,000 miles (321,869 km). Plan 2 lets you choose between major engine component coverage for a choice of 7 years/150,000 miles (241,402 km) or 10 years/200,000 miles (321,869 km).

Extended coverage is available to be purchased in the first 6 months after the in-service date.

For complete coverage details, see Bulletins 3381368 and 3381367.

Our customer care programs are unmatched by anyone else in the industry. Every Cummins customer is supported by:

The largest parts and service network in the industry with over 3,500 authorized repair locations everywhere throughout the U.S. and Canada
Accelerated problem diagnosis at every Cummins QuickServe® location
24/7 access to Cummins
1-800-DIESELS (1-800-343-7357)

For your nearest authorized Cummins service provider, see our service locator.

Cummins Inc. is parent company to Cummins Power Generation - which manufactures Onan brand gensets. These gensets are made specifically for the rugged fire/emergency market where reliability, uptime and performance are crucial. We offer a complete line of mobile gensets to power every fire or emergency application, including hydraulic, diesel, natural gas, LPG and gasoline fuel-powered models ranging from 2-40 kW, plus portable gensets in 4 and 6 kW.

Cummins engines and Onan gensets are backed by the same worldwide network of distributor/dealers. We offer design, manufacturing and customer support synergies not found in any other company supplying the fire/emergency industry. Contact your nearest Cummins Onan distributor by calling 1-800-888-ONAN or 763-574-5000, or visit www.onan.com.