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Oil Cooler Internal Leakage Test: Inspection

WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil cooler from the engine. For additional information, refer to OIL COOLER  in the Disassembly and Assembly of Subassemblies portion of article.
  2. Remove and discard the oil cooler header gaskets.
  3. Position the oil cooler assembly onto the pressure tester and install the mounting bolts.
    Fig 1: Positioning Oil Cooler Assembly Onto Pressure Tester
    G01537583Courtesy of FORD MOTOR CO.
  4. Test the oil cooler.
    1. Connect a compressed air source to the fitting on the Oil Cooler Pressure Tester.
    2. Place the indicator hose in a cup of water.
    3. Turn the air pressure adjustment valve until the pressure gauge reflects 275.8 kPa (40 psi), and check the cup of water for bubbles. Bubbles indicate that an internal leak is present.
    Fig 2: Pressure Testing Oil Cooler
    G01537584Courtesy of FORD MOTOR CO.
  5. If a leak is detected, refer to OIL COOLER  in the Disassembly and Assembly of Subassemblies portion of this article.
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