Hyundai HL970A Operator's Manual page 227

※
During filling, air must be vented from the During filling, air must be vented from the
engine coolant passages. engine coolant passages.
The system must be filled slowly to prevent The system must be filled slowly to prevent
air locks. Wait 2 to 3 minutes to allow air to air locks. Wait 2 to 3 minutes to allow air to
be vented, then add mixture to bring the be vented, then add mixture to bring the
level to the top. level to the top.
②
Operate the engine for 5 minutes with the cool-
ant temperature above 80˚C (176˚F).
Shut the engine off, and drain the cooling sys-
tem.
③
Fill the cooling system with clean water.
※
Be sure to vent the engine and aftercooler Be sure to vent the engine and aftercooler
for complete filling. for complete filling.
※
Do not install the surge tank cap or the new Do not install the surge tank cap or the new
coolant filter. coolant filter.
④
Operate the engine for 5 minutes with the cool-
ant temperature above 80˚C (176˚F).
Shut the engine off, and drain the cooling sys-
tem.
※
If the water being drained is still dirty, the If the water being drained is still dirty, the
system must be flushed again until the water system must be flushed again until the water
is clean. is clean.
OFF
OFF
6-21
2609A6MA16
O C
(Open) (Close)
Stopper
F u
e l
t a n
k
757F6MI11
760F6MI21
O C
(Open) (Close)
Stopper
F u
e l
t a n
k
757F6MI11