Komatsu Utility 69001, Operation & Maintenance Manual

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SERVICE PROCEDURE
MAINTENANCE
4-30
REVERSE AND REPLACE END BITS AND CUTTING EDGES 4
WARNING
It is dangerous if the work equipment moves during the turning or replacement operation.
Set the work equipment in a stable condition, set the work equipment lock lever to the LOCK position,
then stop the engine.
Reverse or replace the end bits and cutting edges before it is worn out to the blade end.
1. Raise the blade to a proper height, position a block under the frame to prevent the blade from falling.
2. Set the work equipment lock lever to the LOCK position and stop the engine.
3. Measure the wear of the end bit and cutting edge in accordance with the wear standards given below.
Wear standards
REMARK
If the cutting edge and the end bit on both sides are worn out, replace with new ones.
If it has been worn out up to the fitting surface, repair the fitting surface and then reverse or replace.
4. Remove the cutting edge and the end bit and clean the mounting surface.
Item
Judgement criteria
(mm)
No.
Dimension to be
measured
Work
equipment
Basic
dimension
Allowable
max.
value
1
Height of end bit
(outside)
A,G 242 187
B,C 204 187
D 292 237
E,F 315 237
H 222 204
2 Width of end bit
A,B,C 325 300
D 435 410
E,F 540 515
G,H 325 310
3
Height of end bit
(inside)
A,B,C,G 204 187
D,E,F 254 237
H 222 204
4
Height of cutting edge
(Center of bolt
mounting hole to edge)
A to H 102 85
The symbols in the work equipment column have the following
meaning.
A: Powertilt dozer (D65EX)
B: Powertilt dozer (D65PX)
C: Powertilt, Power pitch dozer (D65PX)
D: Semi-U blade (3m)(D65EX)
E: Semi-U blade (D65EX)
F: Semi-U blade (D65WX)
G: Angledozer (D65EX)
H: Angledozer (D65PX)