
LUBRICATION AND PREVENTIVE MAINTENANCE INTERVALS
Item 4 – Cooling System
To avoid injury from the expulsion
of hot coolant, never remove the
cooling system pressure cap
while the engine is at operating
temperature. Remove the cap
slowly to relieve pressure. Wear
adequate protective clothing
(face shield or safety goggles,
rubber gloves, apron, and boots).
Coolant Level
The cooling system must be
full
for
proper operation of the engine.
With the engine stopped, check the
coolant level daily and maintain it
near the bottom of the
fi
ller neck on
the radiator. On some installations
this is done by checking an over
fl
ow
bottle or sight glass. Add coolant as
required, but do not over
fi
ll. Before
adding coolant, refer to section G.
How to Select Coolant in this guide.
Make a daily visual check for
cooling system leaks. Look for an
accumulation of coolant when the
engine is running and when it is
stopped. Coolant leaks may be more
apparent on a engine when it is cold.
Coolant Inhibitors
NOTICE:
Coolant
must
be inhibited with the
recommended SCA's (supplemental
coolant additives) listed in this
guide. In addition, the engine
can be equipped with a coolant
filter/inhibitor system as an
installed option or as an after-sale
item.
Failure to check and
maintain SCA levels at required
concentrations will result in
severe damage (corrosion) to
the engine cooling system and
related components.
Check the coolant SCA (supplemental
coolant inhibitors) at the intervals
listed in Table 28. The inhibitors
in antifreeze solutions
must
be
replenished with a non-chromate
corrosion inhibitor supplement when
indicated. Refer to section G. How to
Select Coolant for required inhibitor
levels.
Coolant Drain Interval
Detroit Diesel recommends
replacing coolant at the intervals
listed in Table 21.
58
All information subject to change without notice.
(Rev. May 2004)
DDC-SVC-MAN-0057 0305
Copyright © 2003 DETROIT DIESEL CORPORATION