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CAB AR 2278340 - Caterpillar

2278340 CAB AR Caterpillar parts 631G CAB
Alternative (cross code) number:
Caterpillar 2278340 CAB AR

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Compatible equipment models: 2278340:

WHEEL TRACTOR  631G   Caterpillar
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located too close to sources of radio frequency interference (RFI) such as: - Rotating Beacon lights, Halogen Strobe lights, and AC Fans. Refer to Special Instruction, REHS2365, "Installation Guide for Product Link PL121SR and PL321", "Interference from Warning Beacons". Also Refer to Service Magazine, SEPD1639, "Product Link Signal Communication Improvements Are Now Available on Certain Large Wheel Loaders, Landfill Wheeled Dozers, and Landfill Compactors" which addresses adequate shielding to prevent radio interference with Product Link antenna. - LED lights are recommended. Refer to Service Magazine, SEPD1908, "Revision to "Reports and Messages Not Available" Troubleshooting Procedure for Cat® Products with Cat® Product Link 121/321" for the recommended LED lights. - Other communication antennas on the roof of the machine.Refer to Special Instruction, REHS2365, "Installation Guide for Product Link PL121SR and PL321" for additional details on optimal installation of the antenna. - Tie-wrap tightness on coax hold-downs should be snug enough to limit rubbing but not over-tightened to prevent crushing or pinching of the coax shielding. - Coax should be located a minimum of 9 mm (0.35 inch) from any Control module. - Last coax tie-wraps should secure within 175 mm (6.89 inch) of the coax connector.Expected Result:The antenna is installed properly according to the guidelines and specifications listed in this procedure and Referenced publications.Results:
OK - The antenna for the Product Link is installed properly. Verify that all of the connections for the antenna are tight. Proceed to Test Step 3.
NOT OK - The installation of the antenna is not optimal.Repair: Reinstall the antenna at a superior location.STOPTest Step 3. ACCESS THE PRODUCT LINK THROUGH CATERPILLAR ELECTRONIC TECHNICIAN (CAT ET).
Connect Cat ET to the machine.
Verify that the ECM (Product Link) is available.Expected Result:The ECM (Product Link) is available.Results:
OK - The ECM (Product Link) is available. Proceed to "Test Step 5. VERIFY PRODUCT LINK SETTINGS AND CONFIGURATIONS ARE CORRECT.".
NOT OK - The ECM (Product Link) is not present in the Cat ET screen.
Proceed to Test Step 4. VERIFY THE PRODUCT LINK WIRING.Test Step 4. VERIFY THE PRODUCT LINK WIRING.Note: Ensure the Master Disconnect is closed and the Key Switch is ON.
Check for a blown fuse and replace if necessary.
Check to see if there is an optional "Radio Disable Switch" installed. If there is a "Radio Disable Switch" installed, make sure that the switch is in the ON position. Refer to Special Instruction, REHS2365, "Installation Guide for Product Link PL121SR and PL321 - Optional Installation of Product Link Blast Zone Switch" for more information
Verify that the green LED on the radio is ON. The green LED signifies that the radio is receiving system voltage and key switch power.
If the LED is not visible, use a voltmeter to verify that the radio has system voltage on pin 1 (battery +) and switched power on pin 3 (key switch).
For PL321 systems, verify that the PL300 has system voltage on pin 52 or 53 (battery +) and switched power on pin 70 (key switch).
Verify the data link wiring from the Product Link to Cat ET,

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