2000 Cummins ISM/QSM11 Engine Troubleshooting and Repair Manual (P/N 3666322-01)

The 2000 Cummins ISM/QSM11 Troubleshooting and Repair Manual, Bulletin No. 3666322-01 (printed 1/00), covers engine fault tracing and repair. Its procedures focus on the installed engine, with guidance for engine removal and installation when required.

• Mechanical engine repair: Cylinder-block and liner inspection, piston and connecting-rod service, bearing replacement, and cylinder-head removal, testing, and installation.

• Fuel and overhead service: Fuel-pump checks, injector replacement, air-in-fuel testing, static injection timing, and valve, injector, and engine-brake adjustment.

• Lubrication: Oil-pump service, oil-cooler pressure testing, fuel-contamination diagnosis, dipstick calibration, and optional Centinel system service.

• Cooling: Thermostat testing, water-pump replacement, cooling-system pressure tests, combustion-gas checks, and fan-clutch diagnosis.

• Intake and exhaust: Charge Air Cooler leak and differential tests, turbocharger inspection, wastegate testing, and dry exhaust-manifold service.

• Compressed air: Holset and Cummins compressor checks, air-governor diagnosis, and model-specific unloader and valve-assembly procedures.

• Starting and charging: Alternator checks, battery and cable tests, starter-switch and solenoid checks, and starting-motor removal and installation.

This manual is intended for service technicians, with troubleshooting reserved for trained, experienced personnel.

Symptom Trees and Electronic-Diagnosis Limits

If you are dealing with power loss, hard starting, abnormal noises, or fluid leaks, more than 50 symptom trees connect probable causes with corrective actions and procedure references. Service-tool communication problems and J1939-related derate checks are also addressed.

Electronic fuel-system scope: Detailed fault-code diagnosis and ECM calibration procedures require the separate electronic fuel-system and service-tool manuals referenced in the text. Cylinder cutout and automated cylinder-performance checks likewise refer to the appropriate electronic service-tool manual.

Application specifications distinguish automotive, vocational/transit-bus, and marine ratings. Vehicle and equipment repair procedures remain the responsibility of the respective manufacturers’ manuals.

Mechanical Repair and Overhead Service

The Rocker Levers and Cam Followers/Tappets sections include assembly inspection and service alongside the overhead settings. Cylinder-head coverage includes leak and pressure testing. Full component rebuild procedures are provided in the separate Engine Shop Manual referenced by this publication.

An in-chassis camshaft end-clearance check helps investigate hard starting caused by excessive engine-position-sensor-to-pickup clearance without first removing the front gear cover (PDF pp. 279–281).

Repair cautions: The injector section explains why using the hold-down clamp to pull an injector into place can cause engine damage. Camshaft-bushing instructions also warn that incorrect oil-groove alignment can damage the engine.

Special-tool references include static timing tool 3823451 and injector puller/driver 3823579. Always review the manual’s safety precautions before lifting heavy assemblies or opening fuel and cooling systems.

Fuel, Oil, and Cooling Diagnosis

Fuel-in-oil diagnosis includes fluorescent-dye and pressure tests to locate leakage inside or around an injector. The ECM cooling plate is fuel-cooled; its removal, installation, and leak/restriction checks are covered separately from coolant-system service.

The cooling section addresses supplemental coolant additives, coolant selection, and diagnostic worksheets. For ISM engines equipped with Centinel, the lubrication section explains continuous oil replacement and covers control-valve removal, installation, and priming.

Fuel System and Lubricating Oil System flow diagrams trace fuel routing and oil distribution. Cooling System, Air Intake System, and Compressed Air System flow diagrams support the related leak and restriction checks.

Air Systems, Drive Units, and Engine Testing

Holset unloader procedures distinguish SS, QE, and ST compressor designs. Compressor diagnosis covers frequent cycling, carbon buildup, pin-bore wear, and air-governor faults.

Drive Units and Mounting Adaptations cover accessory and hydraulic-pump drives, flywheel inspection, and standard or REPTO flywheel-housing alignment. The Vehicle Braking section focuses on engine-brake checks and housing service.

Engine-testing material includes chassis-dynamometer setup, a dynamometer worksheet, blowby measurement, fuel-rate checks, and run-in procedures with or without a dynamometer.

A Preview of Valve Settings and Camshaft Clearance

These examples show a small portion of the manual’s adjustment and inspection data.

The Overhead Set section lists intake valve lash of 0.36 mm [0.014 in] and exhaust valve lash of 0.69 mm [0.027 in], with the engine cold and stabilized coolant temperature at 60°C [140°F] or below.

For camshaft inspection, the specified end clearance is 0.13 to 0.33 mm [0.005 to 0.013 in].

Printable PDF, Search, and Diagram Detail

Search and illustrated tests: PDF text search is not available, and there are no embedded bookmarks. Small labels in the electrical test illustrations are best read with zoom; printed section contents and the index provide topic references.

Supplied as one printable, 844-page PDF. The total includes the cover, front matter, index, and seven unnumbered closing pages containing supplementary material, forms, and blank pages.