Detroit Diesel 60 Specifications Page 117

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HOW-TO SECTION
HowtoDrainandFlushthe
Cooling System
Drain and ush the cooling system as
follows:
HOT COOLANT
To avoid scalding from the
expulsion of hot coolant, never
remove the cooling system
pressure cap while the engine is
at operating temperature. Wear
adequate protective clothing
(face shield, rubber gloves,
apron, and boots). Remove the
cap slowly to relieve pressure.
1. With the engine cool, drain the
previous solut ion from the engine
and radiator. Dispose of the
coolant in an environmentally
friendly manner, according
to state and/or federal (EPA)
recommendations.
2. Rell the cooling s ystem
with clean, s oft water and a
good cooling system cleaning
compound, such as those
listedinTable37inthe
Specications section. If
theengineiswarm,ll slowly
to prevent the rapid cooling and
distortion of the metal castings.
3. Start the engine and operate it for
fteen minutes to circulate the
solution thoroughly.
4. Stop the engine and allow it to
cool.
5. With the engin e cool , drain the
cooling system com pletely.
6. Rell the cooling system w ith
clean, soft water and operate it for
fteen minutes.
7. Stop the engine and allow it to
cool.
8. With the engin e cool , drain the
cleaner residue from the cooling
system.
9. Rell the system with the required
coolant. Refer to section How to
Select Coolant.
10. Entrapped air must b e purged
after lling the cooling system.
To do this, allow the engine to
warm up without the pressure cap
installed. With the transmission
in neutral, increase engine speed
above 1000 RPM and add coolant
as required. I nstal l the pressure
cap after the coolant level has
stabilized at the bottom of the
radiator ller neck.
106 All information subject to change without notice. (Rev. 06/06)
DDC-SVC-MAN-0039 Copyright © 2006 DETROIT DIESEL CORPORATION
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