Hitachi EX1900-5, Operator'S Manual

Page: 232 / 281

MAINTENANCE
7-100
Check Bucket Teeth --- daily
Loading Shovel, Backhoe Std.
Check the bucket teeth for wear and looseness
Replace teeth (1) if tooth wear exceeds the designated
service limit shown below.
Dimension A in mm (in)
Parts No. New Limit of Use
Loading Shovel
Bucket PCSA
11.0 m
3
(14.4 yd
3
)
4179918 469 (1
′
6
″
) 285 (11
″
)
Backhoe Bucket
PCSA 9.6 m
3
(12.6 yd
3
)
CECE 8.4 m
3
4083973 335 (1
′
1
″
) 180 (7
″
)
Replacing procedure
CAUTION: Guard against injury from flying
pieces of metal. Wear goggles or safety glasses,
and safety equipment appropriate to the job.
1. Use hammer (2) and drift (3) to drive out locking pin
(5). Be careful not to damage rubber pin lock (4) while
removing locking pin (5).
2. Remove tooth (1). Inspect locking pin (5) and rubber
pin lock (4) for damage, replace if necessary. Short
locking pins and damaged rubber pin locks must be
replaced with new ones.
M104-07-056
M104-07-150
M104-07-118
M104-07-058
M104-07-059
2
3
1 4 5
4
WRONG
WRONG
RIGHT
WRONG
5
Flush one end of the locking pin
to evaluate. In this instance, the
locking pin is too short.