Zinc Rod Protection - Bukh DV36/48 Workshop Manual

O8

Zinc rod protection

For seawater-cooled engines it is necessary to fit zinc anodes in the cooling water system in
order to protect against corrosion of the engine block.
On the starboard side of the engine under the exhaust manifold there therefore are three
mounting holes for zinc anodes. As standard for seawater cooling zinc anodes have been
screwed into the two back holes as shown on the drawing below. There is no zinc anode in the
third hole as – due to the placing of the starter – there is no easy access to this plug during the
day-to-day running.
Change the zinc anodes as according to requirements which are influenced by the water in
which you are normally sailing. Usually it will be necessary to change the zinc anodes once a
year just before the first spring sail.
009W2329-R01