3512B and 3516B Engine Supplement for and 784C,, 785C and and 785C HAA Off-Highway Truck/Tractors Caterpillar

Removal Procedure

Start By:

1. Remove the front hood. Refer to Disassembly and Assembly, "Hood (Front) - Remove and Install".

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Illustration 1	g00483373

1. Install Tooling (A) on cowling assembly (1). Fasten a suitable lifting device and a hoist to Tooling (A), as shown.
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   Illustration 2	g00483407

2. Put identification marks on 3 wire harnesses (2) prior to removal for installation purposes. Disconnect 3 wire harnesses (2) at the electrical connections.
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   Illustration 3	g00483436

3. Disconnect wire harness (3) for the service indicator at the electrical connection.
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   Illustration 4	g00483439

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   Illustration 5	g00563028

4. Remove six bolts (4) and the washers from plate assembly (5). Open cover (6) and remove the hex nut from disconnect switch (7).
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   Illustration 6	g00483500

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   Illustration 7	g00483502

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   Illustration 8	g00483505

5. Remove 20 bolts (8) and the washers from cowling assembly (1). Remove cowling assembly (1). The weight of cowling assembly (1) is 280 kg (617 lb).

Installation Procedure

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Illustration 9	g00483373

1. Install Tooling (A) on cowling assembly (1). Fasten a suitable lifting device and a hoist to Tooling (A). Position cowling assembly (1) on the frame assembly, as shown. The weight of cowling assembly (1) is 280 kg (617 lb).
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   Illustration 10	g00483500

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   Illustration 11	g00483502

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   Illustration 12	g00483505

2. Install 20 bolts (8) and the washers to cowling assembly (1).
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   Illustration 13	g00563028

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   Illustration 14	g00483439

3. Open cover (6) and install the hex nut on disconnect switch (7). Install six bolts (4) and the washers on plate assembly (5).
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   Illustration 15	g00483436

4. Connect wire harness (3) for the service indicator at the electrical connection.
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   Illustration 16	g00483407

5. Connect 3 wire harnesses (2) at the electrical connections.

End By:

1. Install the front hood. Refer to Disassembly and Assembly, "Hood (Front) - Remove and Install".