Oil Cooler Inspection - Mitsubishi 6M70 Workshop Manual

Inspection procedure
Inspection: Oil cooler element
• Plug the outlet of the oil cooler element and connect a hose to
the engine oil inlet port. Then, immerse the oil cooler element in
a tank of water.
• Apply a specified air pressure for 15 seconds through the hose,
and check for any air leaks.
• Replace the element if it leaks air.
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