Hitachi EX1900-5 Operator's Manual page 181

Check Hydraulic Oil Level --- daily
IMPORTANT: Never run the engine without oil in hy-
draulic oil tank.
1. Park the machine on a level surface.
2. Position the machine with the front attachment posi-
tioned as illustrated on the right.
3. Lower the bucket to the ground.
4. Turn the auto-idle switch off.
IMPORTANT: The turbocharger may be damaged if the
engine is not properly shut down.
5. Run the engine at slow idle speed without load for five
minutes.
6. Turn the key switch OFF. Remove the key from the
key switch.
7. Pull the pilot control shut-off lever to the LOCK posi-
tion.
8. Check oil level gauge (1) on hydraulic oil tank. Oil
must be between marks on the gauge. If necessary,
add oil.
CAUTION: Keep body and face away from cap (2).
Turn cap (2) slowly and remove the cap only after
releasing the internal pressure completely.
To add oil:
9. Insert the wrench as shown and turn the wrench
clockwise and hold the wrench.
10. Turn cap (2) counterclockwise about 30°, at which
point stop cap (2) to release the air.
11. Turn cap (2) further and remove cap (2).
12. Add oil. Recheck oil level gauge (1).
13. Align the projected part of cap (2) with the projected
part of the case and install cap (2).
MAINTENANCE
1
7-49
Cap (2)
Arrow
Projection
Case Assembly
Projection
Side Hole
Wrench 4 mm
M142-07-093
M117-07-127
M18C-07-022
M110-07-022