Section 14.1 Improper Engine Coolant Level

Section 14.1
Improper Engine Coolant Level

To determine if improper engine coolant level is causing high engine coolant temperature, visually inspect the radiator coolant level; refer to OEM guidelines.‪

  1. If the radiator coolant level is within approximately 50 mm (2.0 in.) of the radiator filler neck, check for insufficient radiator air circulation; refer to "14.2 Insufficient Radiator Air Circulation" .
  2. If the radiator coolant level is not within approximately 50 mm (2.0 in.) of the radiator filler neck, refer to "14.1.1 Improper Coolant Level Resolution" .

Section 14.1.1
Improper Coolant Level Resolution

Perform the following steps to resolve improper coolant level:‪

  1. Fill coolant system to correct level, refer to MBE 4000 Service Manual (6SE420), Chapter 4, “Cooling System”.
  2. Verify coolant level resolution; refer to "14.1.1.1 Test Engine with Proper Coolant Level" .
Section 14.1.1.1
Test Engine with Proper Coolant Level

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

warning

PERSONAL INJURY

To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.‪

  1. Start and run the engine.
  2. Run the engine through its operating range with no-load for approximately five minutes, allowing the engine coolant to reach normal operating range.
    1. If the engine coolant temperature is 82-105°C (180-221°F), no further troubleshooting is required. Shut down the engine.
    2. If the engine coolant temperature is not 82-105°C (180-221°F), shut down the engine. Check for insufficient radiator air circulation; refer to "14.2 Insufficient Radiator Air Circulation" .


EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568
Generated on 10-13-2008

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