ENGINE AR-COMPLETE 2347851 - Caterpillar

EID 1485 Autonomous Stop Receiver Radio Not Receiving Radio <RF> SignalsFollow this procedure if an event EID 1485 Autonomous Stop Receiver Radio Not Receiving Radio <RF> Signals occurs. When this event code is activated, the autonomous mining truck (AMT) will come to a complete controlled stop. This event code can be triggered by damage to any of the key components of the A-stop system on the AMT: antennas, receivers, cables, and connectors. This event code can also be caused by a physical blockage between the two antennas on opposite sides of the AMT platform.Use an OCS laptop on the A-Stop locator page, and the test mode on an A-Stop to compare signal strength between the driver side and passenger side A-Stop antenna. Comparing the signal strength will assist in determining if the issue is isolated to a specific side.Test Step 1. VISUALLY INSPECT A-STOP ANTENNAS.
The A-stop antennas are mounted atop the mode lights on the front of the truck.Expected Result:A-stop antenna is not aligned or orientated correctly.Results:
A-stop antenna is not aligned or orientated correctly. - Repair: Position and mounting are corrected.Proceed to Test Step 11
A-stop antenna is correctly mounted and aligned. - Proceed to Test Step 2Test Step 2. VISUALLY INSPECT A-STOP MOUNTING STRUCTURES.
Ensure that the mounting structure is secure and correctly orientated.Expected Result:A-stop mounting structure is damaged or misaligned.Results:
A-stop mounting structure is damaged or misaligned. - Repair: Position and mounting are corrected.Proceed to Test Step 11
A-stop mounting structure is secure and mounted correctly. - Proceed to Test Step 3Test Step 3. VERIFY LINE OF SITE BETWEEN A-STOP ANTENNAS.
The A-stop antennas are mounted atop the mode lights on the front of the truck. There should be a clear path between the two antennas.Expected Result:Blockage discovered and removed between A-stop antennas.Results:
Blockage discovered and removed between A-stop antennas. - Repair: Clear path between antennas.Proceed to Test Step 11
Clear line of site exists between A-stop antennas. - Proceed to Test Step 4Test Step 4. CHECK FOR LOOSE OR DAMAGED CONNECTIONS OR DAMAGE TO COAXIAL CABLE.
Check all connections and lengths of coaxial cable.
Begin at one antenna following along entire length up to the receiver in the autonomy cabinet.
If any loose connections are found, examine connection for damage or corrosion
If any damage is found on the coaxial cable, replace entire length of coaxial cable.
Repeat beginning at second antenna.Expected Result:Damage is found and repaired.Results:
Damage is found. - Repair: Repair or replace coaxial cable.Reference Coaxial Best Practice Guide.This document can be found in the Publications box site.Proceed to Test Step 11
No damage is found on system. - Proceed to Test Step 5Test Step 5. REPLACE BOTH A-STOP ANTENNAS.
A-stop antennas are mounted atop the mode lights on the front of the truck.
Order and replace BOTH A-stop antennas.Expected Result:Both A-stop antennas are replaced.Results:
Both A-stop antennas are replaced. - Proceed to Test Step 11Test Step 6. REPLACE FIRST A-STOP RECEIVER.
Order and replace one of the receivers located in the autonomy cabinet.Expected Result:First A-stop receiver is replaced.Results:
First A-stop receiver is replaced. - Proceed to Test Step 11Test Step