Operation and maintenance manual

QSB4.5 and QSB6.7 Troubleshooting Symptoms Charts
Section TS - Troubleshooting Symptoms Page TS-43
Engine Will Not Reach Rated Speed (RPM)
Cause Correction
STEP 9
Vehicle parasitics are excessive
.............
Check the vehicle brakes for dragging,
transmission malfunction, cooling fan operation
cycle time, and engine-driven units. Refer to the
OEM service manual.
OK
Go To Next Step
STEP 10
Engine power output is low
.............
Refer to the Engine Power Outlet Low symptom
tree.
OK
Go To Next Step
STEP 11
Contact a Cummins® Authorized Repair Facility