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SERIES 50 IMPROPER ENGINE COOLANT LEVEL

To determine if improper engine coolant level is causing high engine coolant temperature, perform the following: ‪

  1. Visually inspect the radiator coolant level; refer to OEM guidelines.
    1. If the radiator coolant level is within 2.0 in. (approximately 0.50 mm) of the radiator filler neck, check insufficient radiator air circulation; refer to Section .
    2. If the radiator coolant level is not within 2.0 in. of the radiator filler neck, refer to Section .

Improper Coolant Level Resolution

Perform the following steps to resolve improper coolant level: ‪

  1. Fill coolant system to correct level; refer to Section .
  2. Verify coolant level resolution; refer to Section .
Test Engine with Proper Coolant Level

Perform the following to determine if proper coolant level resolved high engine coolant temperature: ‪

  1. Start and run the engine.
  2. Run the engine through its operating range with no-load for approximately 5 minutes, allowing the engine coolant to reach normal operating range.
    1. If the engine coolant temperature is 88-96C (190-210F), no further troubleshooting is required.
    2. If the engine coolant temperature is not 88-96C (190-210F), check for insufficient radiator air circulation; refer to Section .