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General| Engine Model | QSL9 |
|---|---|
| Cylinders | 6 |
| Aspiration | Turbocharged/Aftercooled |
| Compression Ratio | 17.3:1 |
| Displacement | 8.9 liters |
| Bore | 114 mm |
| Stroke | 145 mm |
| Emission Standards | EPA Tier 4 Final |
| Horsepower | 250-400 hp |
| Peak Torque | 1250 lb-ft |
| Governed Speed | 2200 RPM |
| Cooling System | Liquid |
| Fuel System | Common Rail |
Warning about battery gases and arcing risks during servicing.
Caution against removing injector without disconnecting fuel connector to prevent damage.
Note that fuel system diagnostics procedures have moved to Section 5.
Warning about eye and face protection when using compressed air to prevent injury from debris.
Warning to wear safety gear when using a steam cleaner to avoid burns.
Caution to clean fittings before disassembly to prevent fuel system damage.
Clean engine, fuel lines, and connectors before servicing fuel system components to prevent contamination.
Warning about high fuel pressure and how to vent it before servicing the fuel system.
Warning about fuel flammability and keeping ignition sources away from the work area.
Disconnect injector wire harness, remove clamp capscrews, and pry injector hold-down clamp.
Install new sealing washer, verify thickness to prevent leaks and performance issues.
Warning to follow manufacturer recommendations and wear protective gear when using solvents.
Warning that some solvents are flammable and toxic; read instructions before use.
Avoid abrasives and metallic items for cleaning injectors to prevent nozzle damage.
Inspect injector and high-pressure connector o-rings, inlet, connector tip, and nozzle holes for damage.
Record injector trim codes and cylinder location before installing injectors.
Install new injector with new connector, lubricate o-ring, and ensure proper seating.
Start hold-down capscrews hand-tight; install and partially tighten fuel connector nut.
Final torque tightening of the high-pressure fuel connector retaining nut using a torque wrench.
Caution against over-tightening injector harness terminals to prevent damage.
Install injector wiring harness, noting polarity is not significant and orienting wires to avoid interference.
Instructions for installing injector trim codes using INSITE software (newer versions).
Instructions for installing injector trim codes using INSITE software (older versions).
Enter injector trim info in INSITE, send to ECM, and verify 'Set'/'Success' status.
Install rocker lever assembly, engine brake, fuel lines, cover, open valves, connect batteries, and check for leaks.
Inspect aftertreatment system if malfunction caused coolant, fuel, or smoke issues.
