320D3 Excavators Caterpillar

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Block the bucket before changing the bucket teeth. To prevent possible injury to the eyes, wear a protective face shield when striking the pin. The pin, when struck, can fly out and cause injury to nearby personnel.

Bucket Tips

Illustration 1	g01577934
(1) Usable tip (2) Replaceable bucket tip (3) Overworn tip

Check the bucket tips for wear. If the bucket tip has a hole, replace the bucket tip.

1. Remove the pin from the bucket tip. The pin can be removed by one of the following methods.

   • Use a hammer and a punch from the retainer side of the bucket to drive out the pin.

   • Use a Pin-Master. Follow Step 1.a through Step 1.c for the procedure.
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   Illustration 2	g01577993
   (4) Back of Pin-Master (5) Extractor

   1. Place the Pin-Master on the bucket tip.

   2. Align extractor (5) with the pin.

   3. Strike the Pin-Master at the back of the tool (4) and remove the pin.

      Note: Discard the old pin and the retainer assembly. When you change tips, use a new pin and a new retainer assembly. Refer to the appropriate parts manual for your machine.

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   Illustration 3	g01577913
   (6) Retainer assembly (7) Adapter

2. Clean the adapter and the pin.

3. Fit retainer assembly (6) into the counterbore that is in the side of adapter (7). Make sure that the face of the retainer assembly with the marking "OUTSIDE" is visible.
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   Illustration 4	g00101359

4. Install the new bucket tip onto the adapter.

   Note: The bucket tips can be rotated by 180 degrees in order to allow the tip to wear evenly. You may also move the tips from the outside teeth to the inside teeth. Check the tips often. If wear is present on the tips, rotate the tips. The outside teeth generate the most wear.

5. Drive the pin through the bucket tip. The pin can be installed by using one of the following methods:

   • From the same side of the retainer, drive the pin through the bucket tip, the retainer assembly, and the adapter.

   • Use a Pin-Master. Follow Step 5.a through Step 5.e for the procedure.
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   Illustration 5	g01578233
   (8) Pin

   1. Insert pin (8) through the bucket tip.
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      Illustration 6	g01578342

   2. Place the Pin-Master over the bucket tips so that the pin will fit into the counterbore of the pin holder (9).

   3. Strike the Pin-Master with a hammer at the back of the tool (4) in order to insert the pin.

   4. Slide pin holder (9) away from the pin and rotate the tool slightly in order to align pin setter (10) with the pin.
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      Illustration 7	g01209159
      Final assembly of pin into bucket tip

   5. Strike the end of the tool until the pin is fully inserted.

Side Cutters

Illustration 8	g06311570
Bucket with side cutters

1. Remove the mounting bolts and the side cutters (11).

2. Clean the mounting surface of the side plate on the bucket and of the side cutter. Remove any burrs or protrusions on the mating surfaces.
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   Illustration 9	g06311629
   (12) Shear ledge on a side cutter (13) Side plate on a bucket (B) 0.0 mm (0.0 inch)

   Note: Some side cutters may be rotated for additional wear.

3. Install the side cutter.

   Note: Certain bolts may require thread compound.

4. Hand tighten the bolts.

5. Make sure that there is not a gap between the side plate on the bucket and the shear ledge on the side cutter.

6. Torque the mounting bolts to the correct specification.

Side Protectors (If Equipped)

Inspect the wear of the side protector. When too much wear is present, replace the protector.

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Illustration 10	g01592996

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Illustration 11	g01903678
(14) Side plate (15) Retainer (16) Side protector (17) Pin (18) Shim

1. Hit pin (17) from the side of the bucket without the retainer in order to remove side protector (16) from side plate (14).

2. Clean side protector (16), pin (17), retainer (15) and side plate (14) before installation.

   Note: Lateral clearance between the side plate and the side protector should not exceed 1 mm (0.04 inch). Shims (18) may be required in order to decrease the lateral clearance which will decrease movement. Install the shims (18) between the side plate and the side protector on the opposite side of the retainer.

3. Put retainer (15) in side plate (14).

4. Align two pin holes of the new protector and the side plate. Hit the pin from the retainer side of the bucket.

   Note: If the pin and/or the retainer are worn, replace the pin and/or the retainer.