Komatsu D85EX-18 Operation & Maintenance Manual page 315

MAINTENANCE
Wear standards
(SIGMADOZER)
Item
No. Measuring point
A Height of end bit (outside)
B Width of end bit
C Height of end bit (inside)
Height of cutting edge
D
(From center of bolt mounting
hole to end surface)
REMARK
When the end bit and cutting edge are replaced or inver-
ted, end portion (2) of mounting plate (1) may be worn.
However, the wear of this portion does not affect the serv-
ice life of the blade.
(Semi-U dozer, straight tilt dozer)
Item
No. Measuring point
A Height of end bit (outside)
B Width of end bit
C Height of end bit (inside)
Height of cutting edge
D
(From center of bolt mounting
hole to end surface)
5.
Loosen nut (3) and remove bolt (2).
6.
Remove the cutting edge and end bit.
7.
Clean the mounting face.
8.
Turn the cutting edge and end bit 180 degrees or replace
them with new ones.
9.
Install the cutting edge and end bit, and tighten them light-
ly.
If nut (3) and bolt (2) are damaged, replace them as well.
10. Press the blade against the ground to eliminate of the play
of bolt (2).
11. Tighten the bolt to the specified torque.
Criteria ( mm)
Standard
Repair limit
dimension
272 212
525 475
260 210
127 82
Criteria ( mm)
Standard
Repair limit
dimension
302 211
447 360
254 211
127 86
MAINTENANCE PROCEDURE
4-27