To determine if insufficient radiator air circulation is causing high engine coolant temperature,
perform the following:
1. Visually examine the radiator and radiator shrouding.
2. Check for excessive clogging, a damaged shrouding or a faulty pressure control cap.
13.2.1
Exterior Radiator Repair
Perform the following for exterior radiator repair:
1. Clean the exterior radiator of all clogging, debris, or excessive dirt; refer to OEM guidelines.
2.Verify exterior radiator repair; refer to section 13.2.2.1.
[a] If the radiator is absent of clogging, debris, and dirt, check the radiator shrouding for
damage or incorrect positioning. If there is no damage or clogging to the radiator
refer to section 13.3.
[b] If the radiator shrouding is damaged, incorrectly positioned, or inadequate,
refer to section 13.2.2.
13.2.2
Radiator Shroud Repair
Perform the following for radiator shroud repair:
1. Repair or replace damaged radiator shrouding; refer to OEM guidelines
2. Verify exterior radiator repair; refer to section 13.2.2.1.
13.2.2.1
Test Engine with Repaired Exterior Radiator and Shrouding
Perform the following to determine if exterior radiator and shrouding repair 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.
[a] If the engine coolant temperature is 88-96°C (190-210°F), no further troubleshooting
is required. Shut down the engine.
[b] If the engine coolant temperature is not 88-96°C (190-210°F), shut down the engine.
Check the pressure control cap; refer to section 13.3.
