Drain Hydraulic Oil Tank Sump - Hitachi Zaxis 850LC-3 Operator's Manual

Drain Hydraulic Oil Tank Sump

2
--- every 250 hours
WARNING: Hydraulic oil may be hot just ater opera-
tion. Be sure to wait for oil to cool before starting
work.
IMPORTANT: Never run the engine without oil in hydraulic
oil tank.
1. Park the machine on a level surface with the upperstruc-
ture rotated 90° for easier access.
2. Lower the bucket to the ground.
3. Turn the auto-idle switch off.
IMPORTANT: The turbocharger may be damaged if the en-
gine is not properly shut down.
4. Run the engine at slow idle speed without load for five
minutes.
5. Turn the key switch OFF. Remove the key from the key
switch.
6. Pull the pilot control shut-off lever to the LOCK position.
WARNING: Do not loosen the drain plug until oil is
cool. Hydraulic oil may be hot, potentially causing se-
rious injury.
7. Leave the machine for a while after stopping operation.
After the oil temperature is cooled, push air bleed valve (1)
to bleed air from the hydraulic oil tank.
8. After oil is cool, remove the drain plug (2) and open drain
cock (3) to drain water and sediment.
9. After draining water and sediment, tighten drain plug (2)
and cock (3) securely.
MAINTENANCE
3
2
7-33
1
M1J1-07-006
M1JB-07-010