2010 Medium Duty Engines

Advanced Engine Technology

VGT TurbochargerPACCAR’s variable geometry turbocharger is both simple and precise. Electric actuation allows infinite adjustment, providing the exact amount of boost necessary for superior response, time after time.

High Pressure Common Rail Fuel SystemThe high pressure common rail fuel system supplies a precise mixture of fuel and air at a constant pressure, regardless of engine rpm. This timing flexibility allows multiple injection events per cycle, which maximizes fuel economy and performance while decreasing noise and exhaust emissions.

Cooled EGRThis next-generation exhaust gas recirculation system lowers combustion temperatures for reduced emissions and optimized fuel economy.

After-treatment SystemThe after-treatment system combines a particulate filter (which by itself reduces particulate matter by 90 percent) with proven Selective Catalytic Reduction (SCR) technology, employing a copper zeolite catalyst, to deliver near-zero emissions.

Best-in-Class ComponentsPACCAR’s design and development, production and support of every component from the air intake to the exhaust after-treatment ensure a totally integrated system. Even the starter and alternator are PACCAR-built for superior performance.

Heavy-Duty FeaturesThe PACCAR PX-8 contains many features typical of heavy-duty engine design, including replaceable wet liners, roller cam followers, 2-piece steel articulated pistons, by-pass oil filtration and targeted piston cooling.

Proven Performance. Superior Results. Perfect Fit.At the heart of every medium-duty truck from PACCAR is an optimized and integrated drivetrain featuring the industry-leading quality, reliability and fuel economy of PACCAR PX engines.

The PACCAR PX-6 is an in-line 6 cylinder design and sports the best power-to-weight ratio available in its class – ideal for Class 6 or weight-sensitive Class 7 applications. The 8.3 liter PACCAR PX-8 is a robust solution featuring increased throttle response and acceleration for customers in traditional Class 7, vocational or specialty markets.

Proven performers, PACCAR PX-6 and PACCAR PX-8 engines deliver the durability and efficiency you need to lower operating costs, reduce maintenance and increase productivity.

PACCAR Px-6 PACCAR Px-8

PX-6 SpecificationsHorsepower 200-325hp 149-242kWPeakTorque 520-750lb-ft 705-1017N•mGovernedSpeed 2600rpmClutchEngagementTorque 400lb-ft 542N•mNumberofCylinders 6OilSystemCapacity 4U.S.gallons 15litersSystemWeight 1,340lb 608kgEngine(Dry) 1,150lb 522kgAftertreatmentSystem* 190lb 86kg*IncreaseoverstandardmuffleranddoesnotincludechassisOEM-suppliedcomponents.

PX-6 RatingsEngineModel Horsepower(kW) PeakTorquelb-ft(N•m)@rpmPX-6325 325(242) 750(1017)@1600PX-6300 300(224) 660(895)@1600PX-6280 280(209) 660(895)@1600PX-6260 260(194) 660(895)@1600PX-6250 250(186) 660(895)@1600PX-6240 240(179) 560(759)@1600PX-6220 220(164) 530(719)@1600PX-6200 200(149) 520(705)@1600

PX-6 Maintenance IntervalsMaintenanceItem Miles/Kilometers Hours Months

OilandFilter** 15,000mi 500 6 24,000km

PrimaryFuelFilter** 15,000mi 500 6 24,000km

SecondaryFuelFilter 15,000mi 500 6 24,000km

OverheadAdjustment 150,000mi 5,000 48 241,500km

CoalescingFilter Every3rdto4thOilChangeInterval

DEFFilter 200,000mi 320,000km

ParticulateFilterCleaning 200,000-400,000mi 320,000-640,000km

1,600 2,6002,4002,2002,0001,800140

340

320

300

280

260

240

220

200

180

160

Po

wer

(h

p)Engine Speed (RPM)

140

340

320

300

280

260

240

220

200

180

160

Engine Speed (RPM)1,600 2,6002,4002,2002,0001,800

To

rq

ue

(lb-

ft)

420

740

700

660

620

580

540

500

460

760

380

420

740

700

660

620

580

540

500

460

760

380

** Assuming normal duty cycle.

Horsepower(kW)325(242)

300(224)

280(209)

260(194)

250(186)

240(179)

220(164)

200(149)

PX-8 SpecificationsHorsepower 260-350hp 194-261kW

PeakTorque 660-1000lb-ft 895-1356N•m

GovernedSpeed 2200rpm

ClutchEngagementTorque 500lb-ft 678N•m

NumberofCylinders 6

OilSystemCapacity 6.3U.S.gallons 23.8liters

SystemWeight 1,840lb 834kg

Engine(Dry) 1,630lb 740kg

AftertreatmentSystem* 200lb 90kg

*IncreaseoverstandardmuffleranddoesnotincludechassisOEM-suppliedcomponents.

PX-8 RatingsEngine Model Horsepower (kW) Peak Torque lb-ft (N•m) @ rpm

PX-8 350 350 (261) 1000 (1356) @ 1400

PX-8 330 330 (246) 1000 (1356) @ 1400

PX-8 300 300 (224) 860 (1166) @ 1400

PX-8 270 270 (201) 800 (1085) @ 1300

PX-8 260 260 (194) 660 (895) @ 1300

PX-8 Maintenance IntervalsMaintenanceItem Miles/Kilometers Hours MonthsOilandFilter** 15,000mi 500 6 24,000kmPrimaryFuelFilter** 15,000mi 500 6 24,000kmSecondaryFuelFilter 30,000mi 1,000 12 48,000kmOverheadAdjustment 150,000mi 5,000 48 241,500kmCoalescingFilter Every3rdto4thOilChangeIntervalDEFFilter 200,000mi 320,000kmParticulateFilterCleaning 200,000-400,000mi 320,000-640,000km

Engine Speed (RPM)

To

rq

ue

(lb-

ft)

650

1,050

1,000

950

900

850

800

750

700

6001,200 2,0001,8001,6001,400 2,200

650

1,050

1,000

950

900

850

800

750

700

600

Po

wer

(h

p)Engine Speed (RPM)

140

340

320

300

280

260

240

220

200

180

160

360

1,200 2,0001,8001,6001,400 2,200140

340

320

300

280

260

240

220

200

180

160

360

** Assuming normal duty cycle.

Horsepower(kW)350(261)

330(246)

300(224)

270(201)

260(194)

From air intake to exhaust after-treatment, PACCAR has incorporated and carefully integrated only the very best components into the PX engine – ensuring longevity, reliability and efficient performance.

Exhaust AftertreatmentDiesel Particulate Filter and Selective Catalytic Reduction system combine to produce near-zero emissions.

Ease of MaintenanceEasy access for routine checks and maintenance plus long service intervals result in low cost of operation.

PACCAR StarterIncreased cranking power in a lightweight, compact design.

PACCAR AlternatorReliable brushless design produces 50% more power at idle.

Fuel Injection SystemHigh Pressure Common Rail contributes to outstanding fuel economy.

Variable Geometry TurboInfinite adjustment provides enhanced response and control.

Outstanding Individual Components Optimally integrated Into a Reliable and Efficient Engine

Note: Equipment and specifications shown in this

brochure are subject to change without notice.

Consult with your PACCAR Engine dealer at time of

ordering for standard and optional equipment.

PACCAR PX-6 & PX-8 Service and Support

MDEngine/10 © 2010 PACCAR Inc

PACRIP.O. Box 1518Bellevue, WA 98009

All the Support You Need

No matter where your business takes you, be assured. With more than 670 authorized dealer locations across North America, you’re never far away from the comprehensive and professional support you’d expect from the acknowledged quality leader in truck manufacturing.

With eight strategically located parts distribution centers, PACCAR also operates one of the most extensive, reliable and responsive parts and service organizations in the industry.

As added insurance, you also receive free access to PACCAR’s Customer Call Center – a 24/7 hotline for technical support, roadside assistance and service scheduling.

Parts Distribution Centers

Dealer Sales & Service Locations

Ironclad Protection from PACCAR

PACCAR engines are backed by one of the strongest and most comprehensive warranties in the business. Every major component from the air intake to exhaust after-treatment – including those in the Selective Catalytic Reduction (SCR) system – are included under the base warranty.

The two-year base warranty covers virtually everything (parts, labor, towing when needed and consumables) with no out-of-pocket cost to you – up to 250,000 miles for the PX-8 and unlimited mileage for the PX-6.

For added security, PACCAR also offers a selection of customized extended coverage plans that provide extra protection for your business against unexpected expenses. Select from five different options for PX-6 and PX-8 engines, ranging from three to six years in length. See your nearest PACCAR dealer for further details.