(2) Replacing Engine Lube Oil and Lube Oil
filter.
(See
5.2.1(1))
^3) Replacing Cooling Fresh
Water
Cooling
performance drops when the cooling water is contaminated
with
rust and
scale.
Even
if LLC is added, the cooiing water must be periodically replaced because the properties of
the agent will degenerate.
Replace
the cooling water periodically.
• Draining the Cooling
Fresh
Water — See 4.9.1.
•
Supplying
Cooling
Fresh
Water — See 3.5.
(4)
Inspecting
and Replacing Anti-
Corrosive Zinc
Inspect and replace the anti-corrosive zinc
periodically.
©Close the kingston cock.
©Drain the cooling seawater.
After draining,
close
the cocks.
-* See 4.9.1
©Remove the plug labeled ZINC and indicat-
ed
in the diagram.
. Anti-corrosive zinc is on the following parts.
[NOTICE]-
If
replacement
of zinc is
neglected
and
operation
is
continued
with
a
small
volume
of
anti-corrosive
zinc,
corrosion of the
seawater
cooling
system
will
occur and
water
leak-
age,
parts
breakage,
or accidents
will
result.
Part
Parts
No.
Quantity
Dimensions
DXL
Intercooler
119574-18790
1 V2"XV
Engine
oil cooler
119574-44150
2
U2'XV
*
Fresh
water
cooler
119574-44150
2
1/2"X2"
Anti-corrosion plug
Anti-corrosive zinc label ^ ^
*: For
4LHA-DTP/-DTZP/-STP/-STZP
©Check the zinc on the inside of the plug to
determine ihe amount of wear to ihe anti-corrosive zinc.
•
Replace
the anti-corrosive zinc when it has been reduced to less than 1/2 of its original
size.
• If there is only a
little
bit of wear, clean the surface by sanding off any corroded areas.
'©Replace plug.
©Open the kingston cock and check water leakage.
Intercooler Lube oil cooler
Zinc
Fresh
water cooler
i i
Zinc
-49-
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