Method For Replacing Bucket Teeth - Komatsu WA600-8 Operation & Maintenance Manual

MAINTENANCE PROCEDURE
9.
Open radiator guard side covers (9) on the right and left
side of machine, and fix them with the rod.
10. Blow the dust off from the front and rear of radiator fin (8).
11. Check the rubber hoses. If any hose is cracked or hard-
ened by age, replace with a new one. Also check and
tighten all loose hose clamps.
12. After blowing the dust off, release the locks of radiator
guard side covers (9) and close them.
13. Pull out fixing pin (7) and swing the fan (5) toward radiator
side.
14. Install the fan (5) with bolts (6).
Tightening torque: 245 to 309 Nm {25 to 31.5 kgm}
15. Install fan nets (3) with bolts (4).
16. Close radiator grille (2) and fix it with bolts (1).
For the machine with rear fender, hold the edge and be sure to close the cover (b).

METHOD FOR REPLACING BUCKET TEETH

• It is dangerous if the work equipment moves by mistake when the tooth is being replaced.
Set the work equipment in a stable condition on a ground, stop the engine, then press the work
equipment lock switch to lock the work equipment securely (the work equipment lock pilot lamp
lights up).
• If the pin is driven out with strong force, it is dangerous that the pin flies out. Check that there is no
person around the machine.
• Always wear the protective equipment such as protective eyeglasses and gloves since broken
pieces fly during the replacement work.
METHOD FOR REPLACING MONOBLOC TYPE TEETH
Replace the bucket teeth before the wear reaches to 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.
Set the bottom of bucket to be level, and put a block under
the bucket at the center.
2.
Lower the bucket on the block and stabilize it.
3.
Stop the engine.
4.
Remove the bolts and nuts (1) and (2), and remove the
bucket teeth (3).
5.
Clean the mounting surface of bucket teeth (3).
6.
Install a new teeth to the bucket.
Eliminate the clearance between the teeth and top face of the bucket by inserting shims.
Continue the adjustment with shims until the insertion of 0.5 mm thick of shim becomes impossible.
If the wear extends to the mounting surface, repair the mounting surface before installing.
7.
In order to eliminate the clearance between the bucket teeth and the top end of the bucket, tighten bolts
and nuts (1) and (2) lightly, then tap the teeth ends by using a hammer.
Tightening torque of mounting bolt: 2840±294 Nm {290±30 kgm}
8.
After operating for several hours, retighten the mounting bolts.
4-32
k k
WARNING
MAINTENANCE