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MECHANISM G. 7B0329 - Caterpillar



7B0329 MECHANISM G. Caterpillar parts MECHANISM
Rating:
41
Alternative (cross code) number:
CA7B0329
7B-0329
7B0329
Caterpillar 7B0329 MECHANISM G.
Weight: 126 pounds 57 kg.

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Thoroughly inspect connectors (1) and (2). Also, thoroughly inspect the connectors for the engine shutdown switch. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 4 g01213917
Terminal locations at the P1 ECM connector (P1-5) Digital sensor return (P1-23) Engine shutdown switch (N/C) (P1-40) Engine shutdown switch (N/O)
Illustration 5 g01213918
Terminal locations at the engine interface connectors (Terminal 4) Engine shutdown switch (N/O) (Terminal 5) Engine shutdown switch (N/C) (Terminal 34) Digital return
Illustration 6 g01159881
Harness connector for the engine shutdown switch (Terminal A) Engine shutdown switch (N/O) (Terminal B) Digital return (Terminal C) Engine shutdown switch (N/C)
Perform a 45 N (10 lb) pull test on each of the wires for the engine shutdown switch.
Check the torque of the allen head screw on the ECM connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque values.
Check the harness and the wiring for abrasion and for pinch points from the switch back to the ECM.Expected Result:All of the connectors, pins and sockets are completely coupled and/or inserted and the harness and wiring are free of corrosion, of abrasion and of pinch points.Results:
OK - The harness and the connectors appear to be OK. Proceed to Test Step 2.
Not OK - There is a problem with the connectors and/or wiring.Repair: Repair the wiring and/or the connectors. Replace parts, if necessary. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. Verify that the repair eliminates the problem.STOPTest Step 2. Check the Status of the Shutdown Switch on Cat ET
Connect Cat ET to the service tool connector.
Turn the keyswitch to the ON position.
Monitor the status screen on Cat ET while you operate the shutdown switch. Observe the status for the shutdown switch.Note: Wait at least 30 seconds for the status of the switch to change.Expected Result:The status of the shutdown switch reads "ON" with the shutdown switch in the STOP position. The status of the shutdown switch reads "OFF" when the shutdown switch is in the RUN position.Results:
OK - The status of the shutdown switch reads "ON" with the shutdown switch in the STOP position. The status of the shutdown switch reads "OFF" when the shutdown switch is in the RUN position. The shutdown switch is operating normally.Repair: The circuit for the shutdown switch appears to be operating correctly. There may be an intermittent problem in the harness or in a connector. If an intermittent problem is suspected, refer to Troubleshooting, "Inspecting Electrical Connectors".STOP
Not OK - The status of the switch does not read "ON" with the shutdown switch in the STOP position. The status of the shutdown switch does not read "OFF" when the shutdown switch is in the RUN position. There is a problem with the circuit for the shutdown switch. There may be a problem with the ECM. Proceed to Test Step 3.Test Step 3. Short the Terminals at the Harness Connector for the Shutdown Switch
Turn the keyswitch to the OFF position.
Fabricate a jumper wire that is long enough to short circuit two terminals at


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