Reverse And Replace The End Bits And Cutting Edges - Komatsu D155A-6 Operation & Maintenance Manual

MAINTENANCE

REVERSE AND REPLACE THE END BITS AND CUTTING EDGES

It is dangerous if the work equipment moves by mistake when the cutting edges and end bits are being reversed or replaced.
Set the work equipment in a stable condition, then stop the engine and lock the blade control lever securely with the work
equipment lock lever.
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. Operate the work equipment lock lever to the LOCK position.
3. Measure the wear of the end bit and cutting edge in accordance with the wear standards given below.
Wear standards
(Sigmadozer)
[Unit: mm (in)]
Item
No. Measurement position
Height of outside of
1
end bit
2 Width of end bit
Height of inside of end
3
bit
4
Height of cutting edge
(from center of bolt
mounting hole to end
face)
5
REMARK
The tip (a) of mount plate (b) may wear away when the end bit and
cutting edges are replaced and reversed. This wearing shape does
not effect the blade life.
WARNING
Judgement standard
Standard Permissible
dimension limit
300 (11.8") 235 (9.25")
640 (25.2") 560 (22.0")
330 (12.9") 235 (9.25")
105 (4.1")
165 (6.5")
115 (4.5")
SERVICE PROCEDURE
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