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80
6 Maintenance
Coolant replacement
Every 1000 operating hours.
62 Coolant replacement
The coolant has to be replaced every 1000 op-
erating hours or at least once every two years.
N.B. Replacing the coolant may also be neces-
sary as part of the winter storage procedure;
in case that the coolant present in the cooling
system offers insufficient protection for the
winter.
D
anger
Be aware of the risk of skin burning during
draining the hot coolant! Used coolant must
be collected in a container for proper disposal
according to laws and regulations.
W
arning
Cooling system protective liquids must be
disposed of in accordance with environmen-
tal regulations.
n
ote
Keel cooler
How the cooling system in engines with
keel cooling
should be drained depends
on the installation of the keel cooler.
Refer to the keel cooler manufacturer’s in-
structions for this.
Check using a coolant hydrometer wheth-
er the coolant is providing sufficient pro-
tection against freezing if total draining off
is not possible.
VD00995
63 Preparation
• Remove the plug (1) and the filler cap (2) to
vent the cooling system.
Summary of Contents for M Series
Page 1: ...Operation manual M LINE Marine Diesel Engines 345102 01 ...
Page 2: ...ii ...
Page 146: ...144 ...