Komatsu Galeo BR380JG-1E0 Shop Manual page 353

SEN02305-01
Check and adjustment of tooth plate wedge bolt
spring case, tension spring
If there is play in the tooth plate, abnormal noise
from around the crusher, knocking noise from the
toggle plate, or if the toggle plate has fallen out,
stop operations immediately and carry out the fol-
lowing check and adjustment.
k
With new machines or with machines
where the jaw plate or other consumable
pa r ts h a v e b e e n t u r n e d o r r e p l a c e d ,
because of the fitting of parts together dur-
ing the first 50 hours (time shown on the
service meter), the spring set length and
tightening torque of the nuts and bolts may
change, so carry out inspection and control
thoroughly.
If tension spring set length is greater than
dimension shown below:
Knocking occurs between the toggle
q
plate and toggle seat, and this will
reduce the life of the toggle plate and
toggle seat.
The toggle plate may fall out.
q
If tension spring set length is less than
dimension shown below:
The tension rod or tension spring may
q
break.
If swing jaw, fixed jaw wedge bolt spring is
not suitable:
There may be play in the jaw plate and
q
breakage of the wedge bolt.
12
Check that the spring set length is correct and
adjust it if there is any problem.
The spring set length is as follows.
Fixed jaw plate wedge bolt spring
A = 0 – 2 mm
As shown in the diagram, face (a) (collar face) does
not extend to the outside from face (b) (plate sur-
face), and the inset is within 2 mm.
30 Testing and adjusting
BR380JG-1E0