MAINTENANCE SERVICE PROCEDURE
4-29
REVERSE AND REPLACE END BITS AND CUTTING EDGES 4
WARNING
When carrying out this operation, it is extremely dangerous if the work equipment is moved by mistake.
Set the work equipment in a stable condition, stop the engine, and set the work equipment lock lever
securely to the LOCK position.
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, apply 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
The symbols in the work equipment column have the following meaning.
A: Power angle, powertilt dozer (D61EX)
B: Power angle, powertilt dozer (D61PX)
C: Powertilt dozer (D61PX)
D: Semi-U blade (D61EX)
REMARK
If the cutting edge and the end bit on both sides are worn out, replace with new one.
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.
5. Reverse or replace the cutting edge and the end bit when worn out.
Wear standards Unit [mm (in)]
Item Judgement standard
No. Measurement point
Work
equipment
Standard
dimension
Repair limit
1
Height of outside of
end bit
A 237 (9.3) 204 (8.0)
B 237 (9.3) 204 (8.0)
C 237 (9.3) 204 (8.0)
2 Width of end bit
A 325 (12.8) 300 (11.8)
B 325 (12.8) 300 (11.8)
C 325 (12.8) 300 (11.8)
3
Height of inside of
end bit
A 204 (8.0) 187 (7.4)
B 204 (8.0) 187 (7.4)
C 204 (8.0) 187 (7.4)
4
Height of cutting edge
(from center of bolt
mounting hole to end
face)
A 102 (4.0) 85 (3.3)
B 102 (4.0) 85 (3.3)
C 102 (4.0) 85 (3.3)