303-03-197
Engine Cooling
303-03-197
GENERAL PROCEDURES
E3374 EN
09/2001 2002 Bantam
Cooling System Back flushing
CAUTION: The heater core must be back
flushed separately from the engine cool-
ing system to make sure correct back
flush water flow direction through the
heater core. All engine cooling system
flushing and back flushing procedures
must include a separate back flushing
of the heater core or A/C system heater
core after the flushing or back flushing
of the engine cooling system to prevent
the engine cooling system particles
from clogging the heater core tubes and
reducing (or preventing) coolant flow
through the heater core.
1. Disconnect the heater outlet hose from the
engine intake connector and install a
garden hose (from a tap), with a male
adapter into the end of the heater outlet
hose. Secure with a hose clamp.
2. Connect a garden hose to the engine intake
connector and secure with a hose clamp.
Allow the open end to drain into a suitable
container or drain.
3. Turn the water supply tap ON and OFF
several times, so that the surge action will
help to dislodge larger, stubborn particles
from the heater core tubes. Allow water
pressure to flow for approximately five
minutes.
4. Remove the garden hose with the male
adapter from the heater outlet hose.
Remove the garden hose from the engine
intake connector and reconnect the heater
outlet hose onto the engine intake
connector.
5. Fill the cooling system as described, using
a 50/50 mixture of L405F cooling system
fluid and water. For additional information,
refer to Specifications in this section.
6. Test the system for correct heater operation
within the engine cooling system conditions.
