Method For Inverting And Replacing Bolt On Cutting Edge; Method For Replacing Bucket Teeth - Komatsu H75051 Operation & Maintenance Manual

MAINTENANCE PROCEDURE
3.
Hold the lower part of the condenser (3) and pull it back-
ward.
A gap is made between the condenser (3) and radiator (5).
4.
Insert the air nozzle through the gap and perform cleaning.
Steam or water may be used instead of the compressed
air.
5.
Check the rubber hoses. If any hose is cracked or hard-
ened by age, replace it with a new one. Also check and
tighten all the loose hose clamps.
6.
Insert the air nozzle and blow off the dirt or dusts accumu-
lated onto the fuel tank toward the front of the machine.
Steam or water may be used instead of the compressed air.
7.
Restore the condenser (3) to the original position and install it with the mounting bolts (4) (2 places each on
the right and left).
8.
Close the engine side covers (1) and (2) on the right and left sides of the machine.

METHOD FOR INVERTING AND REPLACING BOLT ON CUTTING EDGE

It is dangerous if the work equipment moves by mistake when the cutting edge or end bit is being re-
placed.
Set the work equipment in a stable condition, stop the engine, then lock the work equipment (the pilot
lamp in the switch lights up).
Turn or replace the cutting edge before the wear reaches the edge of the bucket.
1.
Raise the bucket to a suitable height, then put a block (A)
under the bucket to prevent the bucket from lowering.
Raise the bucket to make its bottom surface level.
2.
Remove bolts and nuts (1), then remove cutting edge (2).
3.
Clean the mounting surface of cutting edge (2).
4.
Turn cutting edge (2) and install it to the bucket.
When turning the edge, install it to the opposite side (left
edge to right side, right edge to left side).
If both sides of the cutting edge are worn out, replace with
new ones.
If the wear extends to the mounting surface, repair the mounting surface before installing the cutting edge.
5.
Tighten bolts and nuts (1) uniformly so that there is no gap between the bucket and cutting edge (2).
Tightening torque of mounting bolt: 883 to 1196 Nm {90 to 122 kgm}
6.
After operating for several hours, retighten the mounting bolts.

METHOD FOR REPLACING BUCKET TEETH

(if equipped)
4-32
k k
WARNING
MAINTENANCE