3054, 3054B and 3056 Marine Engines Caterpillar

Assembly Procedure

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Illustration 1	g00748912

1. Clean aftercooler (9). Refer to Operations and Maintenance Manual, "Overhaul Considerations" for information on cleaning the aftercooler core assembly.

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Illustration 2	g00749093

2. Apply a thin bead of 4C-9612 Silicone Sealant to flange (12) of inner housing (1) .

3. Put inlet line (4) of aftercooler (9) into position in the inner housing (1). Seal flange (11) of the aftercooler onto flange (12) of the inner housing. Center inlet line (4) in the hole in inner housing (1). This will ensure that there is no strain on the inlet line and that O-ring seal (2) will seal properly when flange (3) is tightened.

4. Apply a thin bead of 4C-9612 Silicone Sealant to flange (11) of aftercooler (9) .

5. Slide air intake housing (5) over outlet line (10) of the aftercooler. Seal the flange of air intake housing (5) onto flange (11) of the aftercooler. Center outlet line (10) in the hole in air intake housing (5). This will ensure that there is no strain on the outlet line and that O-ring seal (8) will seal properly when flange (7) is tightened.

6. Install sixteen bolts (14) and install two bolts (6) onto air intake housing (5). Tighten bolts (14) and bolts (6) to a torque of 16 N·m (12 lb ft). Tighten the bolts in a sequence that starts at the center of the housing. Then, work toward the ends of the housing.

8. Install flange (3) onto inlet line (4). Install the bolts and tighten to a torque of 7 N·m (62 lb in). Install a new O-ring seal (2) .

9. Install flange (7) onto outlet line (10). Install the bolts and tighten to a torque of 7 N·m (62 lb in). Install a new O-ring seal (8) .