Hitachi ZX27U-2, Operator'S Manual

Page: 136 / 230

MAINTENANCE
7-16
Swing Internal Gear --- every 500 hours
WARNING: Before lubricating the swing bearing,
lower the bucket and the blade to the ground,
stop the engine, and place the pilot control
shut-off lever to the LOCK position. Lubrication
and rotation of the upperstructure must be done
by one person only. Be sure to check that no
personnel are present around the machine before
starting to work.
1. Remove the cover from the bottom center of the
undercarriage.
Check if grease inside is cloudy due to mixing of
water or dirt.
2.
Apply grease via grease fitting (1) by the quantity
shown in the table
3.
In order to apply grease evenly to the swing gear,
raise the bucket approximately 200 mm (8 in)
above the ground. While swinging the upperstruc-
ture at approximately 90
°
intervals until one full turn
is made, add grease at each interval.
Greasing
Quantity
Total Grease
Capacity
ZX27U
-2
ZX30U
-2
ZX35U
-2
0.2 L
(0.21 US qt)
3.0 to 3.3 L
(3.1 to 3.5 US qt)
ZX40U
-2
ZX50U
-2
0.2 L
(0.21 US qt)
3.2 to 3.5 L
(3.4 to 3.7 US qt)
Control Lever Universal Joint
--- every 500 hours or every year
Pull up the rubber boots under the right and left control
levers, remove two screws (1) to remove bracket (2).
After moving the rubber boots upward, add grease to the
four places of the pilot valve pushers as indicated by
arrows.
M1M7-07-025
M1M7-07-026
M1M7-07-016
1
1
2