Hitachi ZAXIS 120-3 class, Operator'S Manual

Page: 261 / 461

MAINTENANCE
7-70
Check Bucket Teeth for H and BE Type Front or Super V
Type Bucket Teeth (ZX 200-3, 330-3 Class)
--- daily
Check for wearing and looseness of the Bucket tooth points.
1. Replacement intervals
When tooth points (1) wear beyond the service limit,
replace them.
Dimension A in mm (in)
ZX200-3 Class Part No. New Limit of Use
0.8 m
3
Reinforced Hoe
Bucket with Super V
Type Bucket Teeth
4383048
211
(8.3)
90
(3.5)
ZX330-3 Class Part No. New Limit of Use
1.40 m
3
Hoe Bucket
with Super V Type
Bucket Teeth
4400250
232
(9.1)
99
(3.9)
Rock Bukcet
1.38 m
3
1.50 m
3
4400253
229
(9.0)
112
(4.4)
NOTE: When tooth point (1) is used in excess of the service lim-
it, a hole will be made on tooth point (1), which makes
the nose exposed and worn out, and will eventually
break or let tooth point (1) fall off.
2. Replacement
(1) Removing the tooth point
CAUTION: Guard against injury from flying pieces of
metal. Wear goggles or safety glasses.
a. Preparations for removing tooth point.
Hit the left and right top ends and the left and right lugs
of tooth point (1) alternately with hammer to knock off
pebbles, soil, etc., stuck in the gap between tooth point
(1) and adapter (2).
b. Inserting lock removal tool.
Remove pebbles, dirt, etc., completely from the gap be-
tween lock pin (3) and adapter (2). Place pin-removing
jig on the top end of lock pin (3) and hit it with hammer
to remove lock pin (3).
When driving out the pin, first hit with a shorter jig until
top end of lock pin (3) comes to the upper end position
of the lug of tooth point (1), and then use the longer jig
to remove lock pin (3).
M116-07-124
1
M116-07-125
2
1
M116-07-131
1
3 2
3