7. Loosen or remove the drain petcock on the front of the heat exchanger. This is located behind the starboard side engine oil
dipstick.
a - Heat exchanger drain petcock
b - Engine oil dipstick (starboard side)
8. Allow the seawater system to drain. Ensure debris is not clogging any of the drain points.
9.
Ensure each drain plug sealing washer is installed, and intact.
a - Seawater drain plug
b - Drain plug sealing washer
10. After the seawater has completely drained, install the two drain plugs and tighten to the specified torque. Close the heat
exchanger drain petcock.
Description
Nm lb‑in. lb‑ft
Aftercooler discharge pipe seawater drain plug and oil cooler seawater drain plug 25 – 18.4
11.
Seawater strainer:
a. Remove both hoses from the seawater strainer and drain them completely.
b. Drain and empty the seawater strainer.
c. Connect the hoses and tighten the hose clamps.
Typical seawater strainer installation
a - Hose clamps, two on each connection
d. Install the sealing washer and drain plug, if equipped.
Section 5 - Maintenance
90-8M0117076 eng FEBRUARY 2018 Page 63
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