Change Coolant - Hitachi ZW 550-6 Operator's Manual

Change Coolant

--- every 3000 hours or two years
d
WARNING: Do not remove the radiator cap (1)
until the coolant temperature in the radiator has
cooled. Hot steam and coolant may spout out,
possibly causing severe burns. After the coolant
temperature cools, slowly loosen the cap to release
the inside pressure before removing cap (1).
f
NOTE: Refer to page 7-72 for coolant specification. When
other than the recommended LLC is used, contact your
nearest authorized dealer for the replacement interval.
1. Park the machine following the same procedures as
described on page 7-6 for preparation of inspection/
maintenance work.
2. Install articulation lock bar to the front and rear of
the frame by following the procedures described on
page 7-12.
3. Prepare a container to capture approx. 88 liters (23.2
gallons) of drained coolant.
Recycle or properly dispose of the used coolant.
4. Remove radiator cap (1).
Open radiator drain plug (2) and engine oil cooler
drain plug (3) to completely drain the coolant.
Remove impurities such as scale at the same time.
5. Close radiator drain plug (2) and engine oil cooler
drain plug (3).
MAINTENANCE
7-76
1
115Z7B-7-74-1
2
115Z7B-7-74-2
3
95Z7-7-69-3