2003/08/01 Caterpillar

Engine: Commercial

3500 Family All

G3500 Family All

Caterpillar Products:

3500 Family Generator Sets and Power Modules

G3500 Family Generator Sets and Power Modules

A new fabricated tool is available to improve the installation of the piston pin. The new fabricated tool will help prevent nicking and galling while you are installing the piston pin.

The FT2984 Fabricated Tool is used for installing a 3500B HD piston pin.

The FT2985 Fabricated Tool is used for installing a 3500A, or a 3500B standard displacement piston pin.

The FT2985 Fabricated Tool is also used for installing a G3500 piston pin.

Illustration 1	g01014322
Fabricated tool for installing the piston pin

Line drawings of a fabricated tool are ordered from the Caterpillar Service Technology Group by calling the following numbers:

• USA 1-800-542-8665

• Canada 1-800-523-8665

• World 1-309-675-6277

After each tool is fabricated, mark the fabricated tool number on the tool.

Use the following procedure for installing the piston pin with the fabricated tool:

Note: Ensure that all of the parts and the fabricated tool are clean.

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Illustration 2	g01013884

1. Install the fabricated tool into the bore of the piston pin.

2. Coat the bore of the piston crown, of the piston skirt and of the piston pin with clean engine oil.

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Illustration 3	g01013886

3. Align the bore of the piston skirt with the bore of the piston crown. Use the fabricated tool to insert the piston pin into the bore of the piston skirt.

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Illustration 4	g01013888

4. Slide the fabricated tool and the piston pin into the bore of the piston skirt and the bore of the piston crown until the fabricated tool reaches the inside of the first bore of the piston crown.

5. Coat the piston pin bore of the connecting rod with clean engine oil.

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Illustration 5	g01013890

6. Insert the piston pin bore of the connecting rod between the bores of the piston crown.

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Illustration 6	g01013895

7. Gently slide the fabricated tool and the piston pin through the piston pin bore of the connecting rod and through the other side of the bore of the piston crown and the bore of the piston skirt.

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Illustration 7	g01013897

8. Gently remove the fabricated tool.