Check High Speed RPM
engine
Description
High-speed engine RPM stayed below 1650 rpm or above 1950 rpm for over 60 seconds, and the unit gives an alarm only.
Activation Conditions
The control system is calling for high speed operation, and engine speed is less than 1650 rpm, or greater than 1950 rpm for more than 60 seconds (120 seconds when the control system calls for a change from low to high speed, or when unit first starts).
Unit Behavior
Engine Operation: Alarm only. Electric Operation: This alarm will not activate in Electric Operation.
Reset Conditions
Auto reset if control system is calling for high speed operation and the speed is within 1670 and 1930 rpm for 60 seconds or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Fuel Supply - Check for proper fuel and fuel level in the fuel tank. Add fuel as needed to the fuel tank. 2. Perform Pretrip - Run Pretrip and check for alarms. Any active alarms must be corrected and cleared before proceeding. 3. Check Engine Speed - a. Check actual engine speed using hand held tachometer. Refer to Table 2–1. Speed must be within range shown above. b. Compare actual speed with that shown in Unit Data. Readings within ± 50 rpm. 4. Check Fuel/Speed Actuator (FSA) - Check FSA plunger. Must move in and out freely. Refer to engine manual. 5. Check Engine Air-Intake System a. Check air cleaner indicator. Flag must not be visible. b. Inspect air intake system. Verify hoses and tubes in good condition, with no kinks or restrictions. 6. Check Engine Exhaust System - Inspect the exhaust system. Must be clear and unobstructed.