Hitachi EX1900-5 Operator's Manual page 174

Swing Reduction Gear
Check Oil Level --- every 50 hours
(first time after 10 hours)
1. Park the machine on a level surface.
2. Lower the bucket to the ground.
3. Turn the auto-idle switch off.
IMPORTANT: The turbocharger may be damaged if the
engine is not properly shut down.
4. Run the engine at slow idle speed without load for five
minutes.
5. Stop the engine. Remove the key from the key switch.
6. Pull the pilot control shut-off lever to the LOCK
position.
CAUTION: Gear oil may be hot. Wait for gear oil
to cool before starting work.
7. Remove dipsticks (1). Oil must be between marks.
8. If necessary, add oil. (See oil chart)
9. Recheck oil level.
10. Install dipsticks (1).
MAINTENANCE
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M18C-07-019
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M114-07-181