Hitachi EX1900-5, Operator'S Manual

Page: 160 / 281

MAINTENANCE
7-28
Swing Bearing --- every 250 hours
(Grouped Grease Fittings --- Main Frame)
NOTE: Auto-lubrication can be used for the fittings on
the swing bearing.
CAUTION: Lubricating both the swing bearing
and gear and rotating the upperstructure must be
done by one person. Before you lubricate the
swing bearing, clear the area of all persons.
Each time you leave the cab
••••
Lower the bucket to the ground.
••••
Stop the engine.
••••
Pull the pilot control shut-off lever to the LOCK
position.
••••
Use handrails.
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. Turn the key switch OFF. Remove the key from the
key switch.
6. Pull the pilot control shut-off lever to the LOCK posi-
tion.
7. With the upperstructure stationary, apply grease to
the four grease fittings.
8. Start the engine. Raise the bucket several inches off
the ground and rotate the upperstructure 45
°
(1/8
turn).
9. Lower the bucket to the ground.
10. Repeat the procedure three times, beginning with
step 3.
11. Apply grease to the swing bearing until grease can be
seen escaping from the swing bearing seals.
12. Total amount of grease to be applied is approximately
10 to 12 strokes by grease lubricator.
13. Take care not to supply excessive grease.
M18C-01-001