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TICO Document #: SFN-20240924B
Description of Procedure: TICO Radiator Test outline for oil cooler fluid contamination.
Units Affected: N/A
Planned Labor: N/A
Instructions:
Ensure all safety measures are taken to prevent injury or issues while using compressed air and fluids.
To test the oil cooler inside the radiator to ensure no oil cooler leak is causing the coolant to enter the transmission oil loop or vice versa:
Disconnect transmission lines from radiator.
Disconnect radiator hoses from radiator.
If the rad lines are connected and the oil cooler leaks, the test pressure could over pressurize the rad system.
Connect the test plug on one side of the cooler port/fitting to cap off the cooler.
Connect the test connector with gage to allow air pressure to be filled inside the cooler, a gage to see the pressure, and a valve to regulate the supply.
Apply air pressure of 100 PSI to the cooler and turn off valve to hold the pressure for 5 minutes.
If the PSI on the gage drops, then there would be a leak on the cooler inside the radiator. Return the radiator under warranty process.
If the PSI on the gage does not drop, confirm both the coolant loop and the transmission loop have contamination. If both loops are contaminated, return the radiator under warranty process. The part will need further investigation.