Cummins ISB 6.7 CM2100 Engine 2007–2012 Service Repair Manual

🛠️ Cummins ISB 6.7 CM2100 Engine 2007–2012 Service Repair Manual – PDF Download

🔧 This is the complete OEM factory service manual for Cummins ISB 6.7L diesel engines equipped with the CM2100 ECM. Designed for professional diesel technicians, fleet operators, and shop owners, this PDF includes full coverage of mechanical, electrical, and emissions systems — including HPCR fuel injection, EGR, DPF, DOC, and VGT turbo diagnostics.

📲 Instant Digital Download – Over 750 pages of factory procedures, diagrams, wiring schematics, and fault troubleshooting for Cummins ISB 6.7 (EPA 2007–2012) engines.

🔍 Model Background

The Cummins ISB 6.7 CM2100 (2007–2012) marked a major evolution of Cummins’ popular midrange B Series engine, developed to meet strict EPA 2007 emissions standards while preserving the reliability and fuel economy that made its predecessors so widely used. This engine was targeted at light and medium-duty trucks, buses, RVs, and vocational vehicles, and served as a successor to the 5.9L ISB platform.

With a displacement of 6.7 liters and an inline 6-cylinder turbocharged configuration, the ISB 6.7 introduced a number of major updates:

• High-pressure common rail (HPCR) fuel system for precise injection control
• Variable Geometry Turbocharger (VGT) for improved throttle response and engine braking
• Exhaust Gas Recirculation (EGR) to reduce NOx emissions
• Diesel Particulate Filter (DPF) with passive and active regeneration cycles

All engine functions were managed by the CM2100 Electronic Control Module (ECM), which provided real-time monitoring, diagnostics, and emissions control. Horsepower ratings ranged from 200 to 325 HP depending on the application, with torque outputs up to 750 lb-ft.

The ISB 6.7 CM2100 was praised for its quiet operation, improved emissions performance, and excellent low-end torque. It was widely used in platforms such as the Dodge Ram 2500/3500 (Cummins diesel option), Freightliner chassis, Blue Bird and Thomas school buses, and various vocational trucks.

This engine laid the groundwork for later EPA 2010-compliant versions using the CM2200 platform, and remains in service today as a reliable and efficient midrange diesel with strong aftermarket support.

📘 Engine Model Covered:

• Cummins ISB 6.7L Diesel Engine (CM2100 ECM-equipped)

📘 Manual Details:

• Engine Type: Inline 6-cylinder, 4-stroke, turbocharged
• Displacement: 6.7 Liters
• Fuel System: High Pressure Common Rail (HPCR)
• Control Module: CM2100 Electronic Control Module
• Emissions: EGR, DOC, DPF, VGT Turbocharger
• Applicable Years: 2007–2012 (EPA-certified models)
• Language: English
• Pages: 1300+

📚 Manual Sections Include:

• General Information
• Engine ID, operation principles, torque specs
• Mechanical Repair Procedures
• Cylinder head, camshaft, valve lash, piston and rod service
• Crankshaft, main bearings, cylinder block machining
• Lubrication & Cooling Systems
• Oil pump, cooler, filters, thermostat, water pump
• Fuel System
• Injectors, high-pressure pump, filters, priming and diagnostics
• Emissions Control & Aftertreatment
• EGR valve and cooler, DOC/DPF, active/passive regeneration
• VGT turbo calibration, emissions sensor replacement
• Electronic Controls (CM2100 ECM)
• Fault code charts, sensor testing, parameter setup
• Wiring diagrams, harness pinouts, connector views
• Troubleshooting & Maintenance
• Low power, white/black smoke, hard start, fuel delivery faults
• Scheduled maintenance intervals, calibration tools, service reset

💾 Format & Compatibility:

• File Type: PDF (Digital Download)
• Searchable & Bookmarked: ✅ Yes
• Printable: ✅ Yes – Print entire manual or selected sections
• Compatible With: Windows, Mac, iOS, Android, Linux

🔍 Keywords:

Cummins ISB 6.7 CM2100 service manual PDF, ISB 6.7 fault codes, EGR DPF VGT troubleshooting, fuel system diagnostics, diesel engine rebuild guide, CM2100 ECM wiring schematics

❓ Mini FAQ:

Q: Does this manual cover emissions systems like DPF and EGR?
A: Yes – it includes full aftertreatment coverage including EGR, DOC, DPF, and VGT diagnostics.

Q: Can I use this manual to rebuild my ISB 6.7 engine?
A: Absolutely. The manual includes complete teardown and reassembly instructions with specs.

Q: Does this include CM2100 ECM diagnostics and wiring?
A: Yes – you’ll get detailed wiring schematics, fault codes, sensor diagnostics, and ECM troubleshooting.