Swing Internal Gear; Control Lever Universal Joint - Hitachi Zaxis 33U-5A Operator's Manual

Swing Internal Gear

--- every 500 hours
d
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. Lower the bucket to the
ground. Stop the engine. Pull the pilot control shut-off
lever to the LOCK position.
1. Park the machine following the same procedures as
described on page 7-7 for preparation for inspection and
maintenance.
2. Remove the cover from the bottom center of the
undercarriage. Check if grease is cloudy due to mixing of
water or dirt.
3. Apply grease via grease fitting (1).
4. Start the engine. Push the pilot control shut-off lever to
the UNLOCK position.
5. Raise the bucket 200 mm (8 in) off the ground and rotate
the upperstructure 90 ° (1/4 turn).
6. Lower the bucket to the ground.
7. Repeat the procedure (Step 1 to 6) four times.
8. Apply grease by the quantity shown in the below table.
If the grease is contaminated, remove all old grease
and replace with new grease. Take care not to supply
excessive grease.
ZX33U-5A, 38U-5A
ZX48U-5A, 55U-5A,
65USB-5A

Control Lever Universal Joint

--- every 500 hours or every year
Pull up the rubber boots under the right and left control levers,
and add grease to the four places of the pilot valve pushers as
indicated by arrows.
MAINTENANCE
Grease Total Grease
Quantity Capacity
0.2 L 3.0 to 3.3 L
0.2 L 3.2 to 3.5 L
7-23
1
MADB-07-009
MADB-07-010
M1M7-07-016