Miscellaneous; Check Bucket Teeth - Hitachi ZAXIS 450LC-3 Operator's Manual

J. MISCELLANEOUS
1
Check Bucket Teeth --- daily
Check the bucket teeth for wear and looseness
Check for wearing and looseness of the Bucket tooth points.
1. Replacement intervals
Replace tooth point (1) wear beyond the service limit,
replace them.
Dimension A in mm (in)
Model
Standard 254 (10.0") 120 (4.7")
ZX450LC
Rock
-3
Bucket
Standard 280 (11.0") 140 (5.5")
ZX650LC
Rock
-3
Bucket
Standard 306 (12.0") 160 (6.3")
ZX850LC Rock
-3
Bucket
f
NOTE: When tooth point (1) is used in excess of the service
limit, 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
d
WARNING: Guard against injury from flying pieces of
metal. Wear goggles or safety glasses.
(1) Removing the tooth point
(a) Preparations for removing tooth point (1).
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 between 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).
MAINTENANCE
Limit of
New
Use
280 (11.0") 140 (5.5")
306 (12.0") 160 (6.3")
315 (12.4") 160 (6.3")
1
Parts No.
4471407
1
4350781
4350781
4472424
4472424
4255718
1
7-98
A
3
3
2
M1J1-07-065
2
M1J1-07-066
2
M1J1-07-067
M1J1-07-068