62-11640 7–24
00038 CHECK HIGH SPEED RPM
• ACTIVATION: 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 CONTROL: Engine Operation: Alarm only.
Electric Operation: This alarm will not activate in Electric Operation.
• RESET CONDITION: 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.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see
if any active alarm occurs. Continue with the steps below as necessary.
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 proceed-
ing.
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 & tubes in good condition, with no kinks or restrictions.
6. Check Engine Exhaust System
Inspect the exhaust system. Must be clear and unobstructed.
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