308C Excavator Electrical and Electronic System – Hydraulic Oil Temperature Gauge Reads High or Gau

Problem: The hydraulic oil temperature gauge indicates a high level or the hydraulic oil temperature gauge pointer quickly extends beyond operating range.

Solution: Check that the following connectors and components are connected properly: “CONN 41”, “CONN 46” and “CONN 56”. If the problem still exists, use the following procedure to troubleshoot the system.

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Schematic for “Hydraulic Oil Temperature Gauge Reads Low or Gauge Does Not Move” and “Hydraulic Oil Temperature Gauge Reads High or Gauge Quickly Moves Beyond Operating Range”