Check Coolant Level - Hitachi ZW 120-6 Operator's Manual

Check Coolant Level

--- every 10 hours
d
WARNING: Do not remove cap (2) until the coolant
temperature in the radiator is cool. Hot steam may
spout out, possibly causing severe burns. After the
coolant temperature cools, slowly loosen cap (2) to
release the inside air pressure before removing cap (2).
Check the coolant level at expansion tank (1). When the
coolant temperature is low, the coolant level must be above
the top of sight glass (3). If the coolant level is visible, which is
halfway between the top and bottom of sight glass (3), or the
coolant level is invisible, which is below the bottom of sight
glass (3), fill coolant until the coolant level exceeds the top of
sight glass (3).
When coolant in expansion tank (1) is below the appropriate
level, remove cap (2) on the expansion tank (1) and fill it to
the base of the filler port. The base of the filler port is the
appropriate level.
 When refilling a long-life coolant (LLC), use the same
brand product and the same mixture ratio as already
used in the machine.
 If only water is refilled, the mixture ratio in the long-life
coolant (LLC) is diluted so that anti-rust and antifreeze
effect in the coolant will become deteriorated.
MAINTENANCE
7-67
2
1 3
MNSC-07-020
MNSC-07-021
MNSC-07-053