308E Mini Hydraulic Excavator Machine Systems Caterpillar

Bucket - Remove and Install

Usage:

308E TAZ

Removal Procedure

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NOTICE

To facilitate removal of the bucket pins without causing damage to the pins, the bearings, and/or the O-ring seals put the bucket on the floor and the stick in a vertical position, as shown.

Position the bucket, the stick and the bucket control linkage on the ground.
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Illustration 1 g00534630

Note: Relieve the pressure on the bucket pins by moving the stick up and down.
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Illustration 2 g00880305
Remove the nuts and retaining bolt (5) and remove bucket pin (4).
Pull link assembly (1) away from the bucket. Remove two O-ring seals (3).
Remove the nuts and retaining bolt (2).
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Illustration 3 g01517271
Remove nuts (6) and retaining bolt (7).
Remove pin (8) and the O-ring seals. Separate the stick from bucket (9).
Note: The weight of the bucket (9 ) is approximately 240 kg (530 lb).

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	5P-0960	Grease Cartridge	1

Note: Make sure that the stick pin bore, the bucket pin bores, the bucket pins, the flange and the O-ring seals are thoroughly clean prior to installation of the bucket.

Note: Check the condition of the O-ring seals. If the O-ring seals are worn or damaged, use new parts for replacement.

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Illustration 4	g01517271

Note: The weight of the bucket (9 ) is approximately 240 kg (530 lb).

Lower the stick into bucket (9) and align the pin bores. Move the bucket until one side of the bucket makes contact with the stick. Measure the clearance between the bucket and the stick.
Apply Tooling (A) on bucket pin (8). Install bucket pin (8) and the O-ring seals. Align the retaining bolt hole in the bucket pin with the retaining bolt hole in the bucket. Install retaining bolt (7) and nuts (6).
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Illustration 5 g00880305
Align the pin bore in link assembly (1) with the pin bores in the bucket.
Apply Tooling (A) on bucket pin (4). Install bucket pin (4) and O-ring seals (3).
Align the retaining bolt hole in the bucket pin with the retaining bolt hole in the bucket. Install retaining bolt (5) and the nuts.
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Illustration 6 g00357378
Use the following procedure in order to tighten all the nuts:
1. Position the outside nut even with the end of the retaining bolt or 0.5 mm (0.02 inch) beyond the end of the retaining bolt.
2. Tighten the inside nut against the outside nut to a torque of 70 ± 15 N·m (50 ± 10 lb ft).
Lubricate the bucket control linkage. Refer to Operation and Maintenance Manual, SEBU7421, "Bucket Linkage - Lubricate" for the correct procedure.