RDG603A9 - Issue 1 - Shire 14 Workboat Owners Manual 30, 40, 50
Page 29 of 40
Replace the cover plate gasket if damaged.
Replace any other worn components as necessary.
14.
Engine Heat Exchanger Tube Stack Flushing.
When the engine is cold, drain the water from the engine block, drain screw is located
behind the heat exchanger.
Drain water from the heat exchanger, the drain plug is in the bottom of the heat
exchanger end cap.
Disconnect pipes and hoses from engine heat exchanger.
Remove the heat exchanger from the engine.
Mark position, and remove end caps from engine heat exchanger.
Carefully remove the tube stack from the centre of the heat exchanger.
Fully flush between the tubes to remove any dirt or scum build up.
Inspect the tube stack replace if damaged.
Reassemble and refit checking the end cap "O" rings are in good condition
Refill the engine with coolant as described earlier (page 14).
15.
Winterization of Seawater Cooling System.
To prevent frost damage to the seawater cooling circuit components because of water
freezing, ensure all seawater or raw water is drained from the system
Alternatively, run neat anti-freeze through the seawater pump inlet to protect the
system
Ensure that the anti-freeze is drained before starting the engine the next season to
ensure that it does not get into the marine environment. Dispose of correctly
