QSM for Construction (Tier 2)

Overview

QSM for Construction (Tier 2)Every day, QSM engines are put to the test in construction equipment worldwide with superior performance.

Maintenance is kept to an absolute minimum, with oil change intervals that are double the previous standards in some applications, sealed sensors and an auto-tensioning belt drive.

Available in a range of ratings from 250-400 hp (186-298 kW), every QSM is perfectly matched to every piece of equipment.  The QSM not only meets Tier 2 and Euro Stage II emission standards, its advanced design can reach Tier 3 and Stage IIIA requirements as well, with minimal changes.  Cummins engineers work with the original equipment manufacturers, shaping power curves and ratings to align with the work environment, load factors and operating modes.  Then, we optimize the engine's performance with the other vehicle components and subsystems, using Cummins Advisor.

The QSM come with virually every feature standard.  QSM options include REPTO (Rear Engine Power Take-Off).

Every QSM engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.

Specifications

The QSM high-pressure injection system and electronic controls ensure clean, powerful and efficient operation every time. The ECM continuously monitors data from strategically placed sensors within the engine, optimizing the fuel-to-air mixture for maximum combustion. This increases engine responsiveness, improves fuel efficiency and significantly reduces noise levels.

The Holset wastegated turbos provide high efficiency and responsive torque every time for everyday dependability.

Specifications.
Engine Type  In-line, 6-Cylinder   
Displacement  660 cu in  10.8 liters 
Advertised Horsepower  290-400 hp  216-294 kW 
Peak Power  446* hp  333* kW 
Peak Torque  1050-1400 lb-ft  1424-1898 N•m 
Nominal Torque Rise  40%   
Bore and Stroke  4.92 in x 5.79 in  125 mm x 147 mm 
Aspiration  Turbocharged and Charge Air Cooled 
Oil System Capacity  41 U.S. qt  39 liters 
Coolant Capacity  10 U.S. qt  9.5 liters 
Length  51.4 in  1306 mm 
Width  36 in  914 mm 
Height  50.4 in  1280 mm 
Weight (Wet)  2,170 lb  984 kg 
*Indicates restricted rating

Engine Finder Specifications

Markets
Certification Level Tier 2 / Stage II
Power 250 - 400 hp / 186 - 298 kW
Torque 845 - 1400 lb-ft / 1146 - 1898 N•m

Ratings

Engine Model  Advertised hp (kW) @ rpm  Peak hp (kW) @ rpm  Peak Torque lb-ft (N•m) @ rpm
QSM 400* 400 (298) @ 2100  446 (333) @ 1800  1400 (1898) @ 1400 
QSM 400  400 (298) @ 2100  403 (300) @ 1800  1400 (1898) @ 1400 
QSM 400 400 (298) @ 1800 

400 (298) @ 1800 

1400 (1898) @ 1400
QSM 385  385 (287) @ 1800  385 (287) @ 1800  1400 (1898) @ 1400 
QSM 375  375 (280) @ 1800  400 (298) @ 1800  1400 (1898) @ 1400 
QSM 375  375 (280) @ 2000  400 (298) @ 1800  1400 (1898) @ 1400 
QSM 360  360 (268) @ 2100  396 (295) @ 1800  1350 (1830) @ 1400 
QSM 360**  360 (268) @ 1800  360 (268) @ 1800  1260 (1708) @ 1400 
QSM 350  350 (261) @ 2100  385 (287) @ 1800  1309 (1775) @ 1400 
QSM 335  335 (250) @ 2100  367 (274) @ 1800  1257 (1704) @ 1400 
QSM 335  335 (250)@ 2000  367 (274) @ 1800  1321 (1791) @ 1400 
QSM 335** 335 (250) @ 1800  335 (250) @ 1800  1255 (1702) @ 1400 
QSM 330  330 (246)@ 2100  365 (272)@ 1800  1234 (1673) @ 1400 
QSM 330  330 (246)@ 2100  353 (263) @ 1800  1075 (1458) @ 1400 
QSM 330  330 (246) @ 2100  340 (254) @ 1800  1170 (1586) @ 1400 
QSM 330  330 (246) @ 2100  330 (246) @ 1800  1235 (1674) @ 1400 
QSM 320  320 (239) @ 2000  350 (261) @ 1800  1260 (1708) @ 1400 
QSM 315  315 (235) @ 2100  315 (235) @ 2100  1178 (1597) @ 1400 
QSM 315**  315 (235) @ 1800  315 (235) @ 1800  1160 (1573) @ 1400 
QSM 299**  299 (223) @ 1800  299 (223) @ 1800  1260 (1708) @ 1400 
QSM 299  299 (223) @ 2100  315 (235) @ 1800  1182 (1603) @ 1400 
QSM 290  290 (216) @ 2100  320 (239) @ 1800  1092 (1481) @ 1400 
QSM 290  290 (216) @ 2100  299 (223) @ 1800  952 (1291) @ 1400 
QSM 280  280 (209) @ 2100  280 (209) @ 2100  950 (1288) @ 1400 
QSM 270**  270 (201) @ 1800  270 (201) @ 1800  1010 (1369) @ 1400 
QSM 250  250 (186) @ 2100  250 (186) @ 2100  845 (1146) @ 1300 
All ratings are intermittent unless otherwise noted.
Additional ratings may be available.  Check with your Cummins distributor or dealer.
*Indicates restricted rating
**Indicates continuous rating

Features

Every Cummins QSM engine is designed to go the distance, with heavy-duty components that have been proven in hundreds of applications, around the world.

  • Advanced Combustion Technology - Optimized injector tips and a reshaped steel piston bowl improve fuel economy and emissions control, resulting in longer change intervals.
  • Articulated Pistons - Steel-topped articulated pistons handle higher cylinder temperatures for improved fuel economy and emissions control.
  • Patented Mid-Stop Cylinder Liners - Resist cavitation, extend life-to-overhaul.
  • Improved Camshaft Design - Exhaust valve lobes are designed to improve wear tolerance, and the injector lobe profile has been revised to optimize injection.
  • Sealed Sensors - Fully sealed to resist water intrusion and enhance reliability. Combined temperature and pressure sensors reduce inventory and simplify maintenance.
  • CELECT™ Electronic Engine Management - Provides superior performance, fuel efficiency, diagnostics and prognostics using full-authority electronics. Its programmable features let you customize engine performance to equipment use.

Maintenance

The QSM was designed to deliver more time in the field and less time being serviced. Maintenance intervals have been made longer, and service has been made simpler.

Maintenance Intervals

Cummins QSM engines feature a Venturi™ oil filter by our Fleetguard subsidiary in combination with an improved lube system that increases oil flow, reduces lubrication delay at start-up and improves protection.

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

Brochures Available

Title Bulletin Number Request View  
Encompass Tri-Fold Mailer 3624570 Request View  Download