Section 7 - Lubricating Oil System - Group 07 Lubricating Oil Cooler (7-07) M11 Page 7-13 Use the lubricating oil cooler pressure test kit, Part No. 3376861, to seal the oil passage. Install one of the pressure test plates on one of the oil passage openings. Use air pressure to blow the moisture from inside the oil passages. Use a cooling system cleaner attached to the coolant outlet side of the housing to flush the coolant passages. If the oil or coolant passages are contaminated by foriegn material, the oil cooler must be replaced. Pressure Test the Oil Cooler Element Use the lubricating oil cooler pressure test kit, Part No. 3376861, to pressure test the oil cooler element.
Install the two gaskets and test plates to the oil passage openings. Install a regulated air pressure line to the Part No. 3376869 Test Plate. Apply air pressure. Air Pressure: 414 kPa [60 psi] Install the oil cooler in a tank of water. Temperature: 82°C [180°F] Check for leaks. If leaks are found in the oil cooler element, the oil cooler must be replaced.