Coolant Flushing And Changing - Detroit Diesel MBE 900 Operator's Manual

MAINTENANCE
by volume of corrosion-inhibiting
antifreeze.
3. Check the coolant level and add
more coolant if necessary.
4. Close and tighten the cap on the
surge tank.
Coolant Flushing and
Changing
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.
Flush and change the coolant as
follows:
1. Open the cap on the surge tank
slowly, to allow excess pressure
to escape. Set the cap aside.
2. Open the water regulating valve
for the heating system.
3. Drain the coolant from the engine.
[a] Place a receptacle underneath
the coolant drain plug.
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DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION
Choose one that is large
enough to hold the expected
quantity of coolant.
NOTE:
Make sure the coolant can flow
unobstructed into the receptacle.
[b] Open the coolant drain plug
on the bottom of the radiator.
4. Flush the radiator.
NOTICE:
When flushing the radiator, do not
apply more than 140 kPa (20 psi) air
pressure. Excessive pressure can
damage the radiator or heater core.
[a] Attach a flushing gun nozzle
to the radiator outlet.
[b] Run water in until the radiator
is full.
All information subject to change without notice. (Rev. 04/08)