320D2 GC Excavator Machine Systems Boom Bearings and Seals - Remove and Install Caterpillar

Removal Procedure

Start By:

1. Remove the boom.

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Illustration 1	g00479266

1. Remove lip seal (1).
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   Illustration 2	g00479267

2. Use Tooling (A) to remove the sleeve bearing.

3. Repeat Steps 1 through 2 in order to remove the lip seal and the sleeve bearing from the other side of the boom.

Installation Procedure

1. Make sure that the bores for the sleeve bearings are free of paint and grease prior to the installation of the sleeve bearings. Coat the sleeve bearings and the bearing bores with Tooling (C) prior to the installation of the sleeve bearings in the bores. Sleeve bearings must be installed with the identification numbers toward the outside of the boom.

   Note: Make sure that the bearings are installed in the bore so that the identification numbers of the bearings are facing outward.

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   Illustration 3	g00599079
   (X) Boom (Y) Bearing

2. Lower the temperature of the sleeve bearings. Use Tooling (B) to install the sleeve bearing in the pin bore at the foot of the boom. Install the sleeve bearing until Dimension (a) is 9.5 ± 0.8 mm (0.37 ± 0.03 inch) below the outside surface of the boom.
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   Illustration 4	g00479266

3. Use Tooling (B) to install lip seal (1). Install the seal with the sealing lip toward the outside of the boom. Install the lip seal until the lip seal makes contact with the sleeve bearing.

4. Repeat Steps 2 through 3 in order to install the sleeve bearing and the lip seal on the other side of the boom.

5. Put a thin coat of Tooling (C) on the sleeve bearings. Put a thin coat of Tooling (C) on the lips of lip seals (1).

End By:

1. Install the boom.