Method For Inverting And Replacing Bolt On Cutting Edge - Komatsu H70051 Series Operation & Maintenance Manual

MAINTENANCE
METHOD FOR CLEANING FIN WITH ENGINE SIDE COVER OPEN
1.
Open the engine side covers (1) and (2) on the right and
left sides of the machine.
2.
Insert the air nozzle through the clearance between the ra-
diator, oil cooler, aftercooler (3), and air conditioner con-
denser (4) to clean.
Steam or water may be used instead of the compressed
air.
3.
Check the rubber hoses. If any hose is cracked or hard-
ened by age, replace with a new one. Also check and
tighten all the loose hose clamps.
4.
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.

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).
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WARNING
MAINTENANCE PROCEDURE
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