Usage:
5.1: Electronic Governing System
5.1.1: Notch Speeds
After starting the engine and checking all the safeties, run the engine at no load in each notch. Measure the engine speed in each notch. Compare these speeds with the nominal speeds identified in 3500 Locomotive Engines Personality Module Settings, SENR5187. If necessary refer to "6.13: Engine Speed And Power Incorrect In Each Notch".
5.1.2: Generator Current Sense
Refer to "8.19: Generator Current Sense Checkout" to check the generator current sense. Refer to "6.22: Incorrect Scaling Of Generator Current Sense" if necessary.
5.1.3: Generator Voltage Sense
Refer to "8.18: Generator Voltage Sense Checkout" to check the generator voltage sense. Refer to "6.21: Incorrect Scaling Of Generator Voltage Sense" if necessary.
5.1.4: Motor Current Sense
Refer to "8.20: Motor Current Sense Checkout" to check the motor current sense. Refer to "6.23: Incorrect Scaling Of Motor Current Sense" if necessary.
5.1.5: 24T Signal Scaling
Refer to "8.30: 24T Signal Scaling" to check the 24T signal scaling. Refer to "6.25: Incorrect 24T Signal Scaling" if necessary.
5.1.6: Load Test
Refer to "8.27: Load Testing The Engine" for the proper procedure for load testing the engine.
For each notch note the rack position. This requires an 8T1000 Electronic Position Indicator Group be installed and calibrated (refer to Special Instruction, SEHS8623 to install and calibrate) prior to performing the load test.
NOTE: An accessory kit (6V6042 Probe Contactor Point Group) is available that contains a selection of different length extensions for the 8T1000 Electronic Position Indicator Group. The correct extension is the same for all 3500 engines. The correct extension should be chosen so that the 8T1000 Electronic Position Indicator Group will properly display shut-off rack position as well as the maximum mechanical position. All 3500 engines require the sensor to be set up to display increasing rack with a retracting sensor.
Compare the horsepower and rack positions in each notch with the nominal values identified in 3500 Locomotive Engines Personality Module Settings, SENR5187. The horsepower should be within specification for the type or class of locomotive. The rack positions should be within ±0.24 mm (±0.009 in).
Refer to "6.10: Engine Speeds Correct And Power Incorrect" if necessary.
5.1.7: Check Automatic Sanders
Refer to "8.28: Checking Automatic Sanders" to check the automatic sanders. Refer to "6.15 Automatic Sanders Not Operative" if necessary.
Safety System
5.2.1: Start The Engine
Attempt to start the engine. Refer to "6.1: Engine Will Not Crank When Start Switch Activated, 6.2: Engine Cranks But Will Not Start, 6.5: Engine Does Not Stay Running After A Start or 6.8: Engine Stalls At Low RPM" if necessary.
5.2.2: Stop Logic
Attempt to stop the engine with each of the shutdown methods the locomotive is equipped with. Refer to "6.6: Engine Does Not Shutdown" if necessary.
5.2.3: Oil Pressure Shutdown
Refer to the Testing And Adjusting section Systems Operation Testing And Adjusting, SENR4637, to check the oil pressure shutdown function. Refer to "Problem 26: Engine Has Low Oil Pressure" in the Troubleshooting section of Systems Operation Testing And Adjusting, SENR4637.
5.2.4: Crankcase Pressure Shutdown
Refer to Systems Operation Testing And Adjusting, SENR4637 to check the crankcase pressure shutdown function.
5.2.5: Emergency Shutdown
With the engine running, momentarily depress the manual emergency shutdown switch (if equipped). Note the engine shuts down with the air inlet shut-offs tripped. Refer to "6.6: Engine Does Not Shutdown" if necessary.
5.2.6: Overspeed Shutdown
With the engine running at notch 8, momentarily depress the 75 percent pushbutton on the front face of the ESS (overspeed switch). Note the engine shuts down with the air inlet shut-offs tripped. Refer to "8.14: ESS Switch Replacement and 8.16: ESS Switch Calibration" to troubleshoot and repair the ESS (overspeed switch).