SPACER 4P3874 - Caterpillar

test step.Test Step 5. CHECK THE AIR SHUTOFF SOLENOID.
Check the engine starting system. Check the fuel system. In order to check the fuel control solenoid, see Testing And Adjusting, "CID 566 FMI 7 Unexpected Shutdown Improper Mechanical Response - Test". Check for a fault with the engine starting system or the fuel system.Expected Result:The air shutoff solenoid is working properly.Results:
OK - The air shutoff solenoid is working properly. Proceed to Test Step 6.
NOT OK - The air shutoff solenoid is NOT working properly.Repair: Correct the problem with the air shutoff solenoid. Reset the genset. Operate the genset and verify that the problem has been corrected.STOPTest Step 6. CHECK THE FUSES.
Check the fuses "F2" and "F4" on the relay module.Expected Result:The fuse is NOT blown.Results:
OK - The fuse is NOT blown. Proceed to Test Step 7.
NOT OK - The fuse is blown. Proceed to Test Step 15.Test Step 7. CHECK THE SETPOINTS.
View the setpoints P017 (total cycle crank time) and P018 (cycle crank time). Make a note of the setpoints. See System Operation, "Engine/Generator Setpoint Viewing OP2-0". Compare the setpoints against the default setpoints of the particular generator set.Expected Result:The setpoints are correct. The factory default values are 90 seconds for P017 and 10 seconds for P018. Engines that are equipped with prelube pumps may require cycle crank times (setpoint P018) of 30 seconds or more.Results:
OK - The setpoints are correct. Proceed to Test Step 8.
NOT OK - The setpoints are NOT correct.Repair: Reprogram the setpoints. Reset the genset. Operate the genset and verify that the problem has been corrected.STOPTest Step 8. CHECK THE BATTERY VOLTAGE.
The engine should be off.
Measure the system voltage at the battery.Expected Result:For 24 volt systems, the voltage should be from 24.8 to 29.5 DCV. For 32 volt systems, the voltage should be from 33.1 to 39.3 DCV.Results:
OK - The voltage is correct. Proceed to Test Step 9.
NOT OK - The battery voltage is NOT within specifications.Repair: Further testing of the battery system is necessary. See Testing And Adjusting, "CID 168 Electrical System". STOPTest Step 9. CHECK THE ENGINE STARTING FUNCTION.Note: The GSC+ is attempting to crank whenever the K4 indicator is ON. The K4 indicator is located on the lower display. Be aware of the 10 second crank cycle (set by P018)that is factory set. Be sure that the K4 indicator is ON while you are making the following measurements. More than one start may be required to complete this test.
Disconnect the "B+" wire on the pinion solenoid of the starting motor. Do not allow the "B+" wire connection to contact the frame or other metal components. The "B+" wire remains disconnected for all of the remaining steps of this procedure.
Turn the engine control switch (ECS) to OFF/RESET and then turn the switch to START.
Measure the voltage from the B+ Pinion Solenoid wire (currently disconnected from the starting motor) to "B-" (ground) while the K4 indicator is ON.Expected Result:The voltage should be within