Check Bucket Teeth - Hitachi EX1900-5 Operator's Manual

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)
Loading Shovel
Bucket PCSA
3 3
11.0 m (14.4 yd )
Backhoe Bucket
3
PCSA 9.6 m
3
(12.6 yd )
3
CECE 8.4 m
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.
MAINTENANCE
Parts No. New
4179918 469 (1' 6") 285 (11")
4083973 335 (1' 1")
Limit of Use
180 (7")
RIGHT
7-100
1 4 5
WRONG
Flush one end of the locking pin
to evaluate. In this instance, the
locking pin is too short.
WRONG
WRONG
4
M104-07-056
2
3
M104-07-150
5
M104-07-118
M104-07-058
M104-07-059