320D3 Excavators Caterpillar

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Personal injury or death can result from bucket falling. Block the bucket before changing bucket tips or side cutters.

Bucket Tips

Note: In order to maximize the life of the bucket tip and the penetration of the bucket tip, the bucket tip can be rotated.

Illustration 1	g01055179
Acceptable wear

Illustration 2	g01055196
Replace this bucket tip.

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

Removal Procedure

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Retainer pin, when struck with force, can fly out and cause injury to nearby people. Make sure the area is clear of people when driving retainer pins. To avoid injury to your eyes, wear protective glasses when striking a retainer pin.

Illustration 3	g01053737
(1) Bucket tip (2) Retainer (3) Adapter

Note: Retainers are often damaged during the removal process. Caterpillar recommends the installation of a new retainer when bucket tips are rotated or replaced.

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Illustration 4	g01054386
Internal view

1. Use a hammer and a punch in order to drive out the retainer. The retainer can be removed from the top of the bucket tip or from the bottom of the bucket tip.

2. Remove the bucket tip from the adapter with a slight counterclockwise rotation.

Installation Procedure

1. Clean the adapter, if necessary.

2. Install the new bucket tip or the rotated bucket tip onto the adapter with a slight clockwise rotation.
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   Illustration 5	g01498093
   Proper location for installing the retainer

3. The retainer can be installed from the top of the bucket tip or from the bottom of the bucket tip. Use a hammer and a 1 inch X 1 inch X 8 inch steel bar stock in order to drive retainer (2) into adapter (3).
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   Illustration 6	g01492733
   Internal View The latch of the retainer is properly seated in the recess of the bucket tip.

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   Illustration 7	g01054753
   A properly installed retainer does not extend beyond the ear of the bucket tip.

4. The retainer is properly seated if the retainer can be moved slightly by the technician's hand. If the retainer cannot be moved, adjust the retainer, as needed. The ends of the retainer should not extend beyond the ear of the bucket tip.

Side Cutters (If Equipped)

Illustration 8	g06311554
Bucket with side cutters (A) Side cutters

1. Remove the mounting bolts and the side cutters.

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	g06311556
   (4) Side cutter

   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.
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   Illustration 10	g01389433
   Section B-B From Illustration 9 (4) Side cutter (5) Side plate on a bucket (6) 0.0 mm (0.0 inch) (7) Shear ledge on a side cutter

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 11	g01389452

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Illustration 12	g01389453
(8) Side plate (9) Retainer (10) Side protector (11) Pin

1. Hit pin (11) from the retainer side of the bucket in order to remove side protector (10) from side plate (8).

2. Clean side protector (10), pin (11), retainer (9) and side plate (8) before installation.

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

3. Put retainer (9) in side plate (8).

4. Align two pin holes of the new protector and the side plate. Hit the pin from the side of the bucket without the retainer.

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