Coolant Temperature Sensor on Certain C3.4B Engines {1439, 1906}
- Industrial Engine:
- C3.4B (S/N: CJG259-260,281-290,292-296,298-298,300-300,302-302,305-305,307-307,310-316,318-319,321-327,330-331,333-333,335-336,338-340,342-347,349-351,355-358,360-377,379-395,398-401,405-405,410-419,421-421,424-428,430-433,438-439,441-443,446-448,450-451,453-457,459-459,461-463,465-466,468-472,475-475,479-479,483-483,491-491)
There have been a number of isolated instances of issues with the 373-9526 Temperature Sensor on certain C3.4B engines. The issue is that there is a coolant leak from the coolant temperature sensor.
If there are signs of a coolant leak from the coolant temperature sensor, replace the coolant temperature sensor. Refer to Disassembly and Assembly, "Coolant Temperature Sensor - Remove and Install" for the correct procedure.
Note: The coolant temperature sensor is an assembly that includes a sealing washer.
Ensure that the coolant is replaced using the correct method. Refer to Operation and Maintenance Manual for the correct procedure.
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