77
3-4. INSPECTION OF CHISEL BUSHING WEAR
3-4-1. TOP MOUNT BRACKET/ SIDE MOUNT BRACKET
⚫
Inspect the wear of the chisel bushing everyday.
1.
Lay the hydraulic breaker on the ground
horizontally.
Stop the excavator engine.
2.
Insert brand new chisel (1).
3.
Measure the clearance (C) between the
chisel bushing (2) and chisel (1); Check
whether the clearance is within the
permitted values shown in the table below.
4.
It is essential to change the chisel bushing
if the clearance is not within the permitted
values shown in the table below.
As regards to changing the chisel bushing,
please contact TOKU Distributor.
The serviceability limit for Chisel Bushing (Clearance)
Model
TNB-
08M
1M
2M
3MB
4M
5M
Clearance(C) (mm)
4
4
4
4
4
4
Model
TNB-
6M
6E
7J
16K
110
141LU
151LU2
Clearance(C) (mm)
4
6
7
7
8
8
Model
TNB-
27K
190LU2
230LU2
310LU1
60K
400LU2
Clearance(C) (mm)
8
10
10
12
C
1
2
Summary of Contents for TNB-08M
Page 133: ...TOKU Pneumatic Co Ltd...
