Komatsu — WHEN REQUIRED

. MAINTENANCE SERVICE PROCEDURE TURN, REPLACE BOLT-ON CUTTING EDGE WARNING lever securely to the LOCK REPLACE BUCKET TEETH (If equipped) 4 - 31 It is dangerous if the work equipment m oves by mistake during the turning o r replacement operation Set the work equipment in a stable co ndition, stop the engine, then set the work equipment lock l position. Turn or replace the cutting edge be fore the wear reaches the edge o 1. 2. 3. 4. 5. 6. Raise the bucket to a suitable h the bucket to prevent the buck Raise the bucket so that the b horizontal. Remove nuts and bolts (1), the Clean the mounting surface of Turn cutting edge (2) and insta the edge, install it to the oppos right edge to left side).

If both sides of the cutting edg part. If the wear extends to the mounting surface before install Tighten nuts and bolts (1) unifo rmly so that there is no gap between the bucket and c Tightening torque for mounting bolt: 745 ± 108 Nm (76 ± 11 kgm Tighten the mounting bolts aga in after operating for several hour ONE-PIECE TOOTH eplace them as follows. eight, then put blocks (A) under et from coming down. ottom surface of the bucket is and (2), then remove bucket f bucket tooth (3). so that there is no clearance surface of the bucket.

comes impossible to add a 0.5 , correct the mounting surface ng between the teeth and tip of the bucket, tighten bolts and nuts (1) and (2) he teeth with a hammer. bolt (1): 863 ± 941 Nm (88 ± 96 kgm, 636.5 ± 694.4 lbft) (2): 588 ± 647 Nm (60 ± 66 kgm, 434 ± 477.4 lbft) a few hours, tighten the mounting bolts again. When the bucket teeth are worn, r 1. Raise the bucket to a suitable h the bucket to prevent the buck Raise the bucket so that the b horizontal. 2. Remove the bolt and nuts (1) tooth (3). 3. Clean the installation surface o 4. Install new teeth to the bucket. When doing this, insert shims between the teeth and the top Continue to add shims until it be mm (0.02 in) shim.

If the mounting surface is worn before installing the teeth. 5. To prevent any gap from formi temporarily, then hit the tip of t Tightening torque of mounting 6. After operating the machine for Raise the bucket to a suitable h the bucket to prevent the buck Raise the bucket so that the b horizontal. Remove the bolt and nuts (1) tooth (3). Clean the installation surface o Install new teeth to the bucket. When doing this, insert shims between the teeth and the top Continue to add shims until it be mm (0.02 in) shim. If the mounting surface is worn before installing the teeth. To prevent any gap from formi bolt (1): 863 ± 941 Nm (88 ± 96 k gm, 636.5 ± 694.4 lb (2):

588 ± 647 Nm (60 ± 66 k gm, 434 ± 477.4 lbft) After operating the machine for a few hours, tighten the mountin g bolts again.