C6.6 Engines for Caterpillar Built Machines ECM Mounting Bracket - Remove and Install Caterpillar

Removal Procedure

Start By:

1. Remove the electronic control module. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install".

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Illustration 1	g01342045
Typical example

1. Follow Steps 1.a through 1.c in order to disconnect engine wiring harness (2) .

   1. Slide locking tab (4) into the unlocked position.

   2. Disconnect harness assembly (2) from fuel pressure sensor (3).

   3. Cut cable straps (1) and (5). Position harness assembly (2) so that the harness assembly is clear of mounting bracket (8).

2. Disconnect wire (7) for the glow plugs. Remove terminal insulator (6) from mounting bracket (8). Refer to Disassembly and Assembly, "Glow Plugs - Remove and Install" for the correct procedure.
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   Illustration 2	g01342046
   Typical example

3. Remove bolts (9) from fuel manifold (10).

4. Loosen bolts (11) that secure mounting bracket (8) to the inlet manifold.
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   Illustration 3	g01342051
   Typical example

5. Remove bolts (12) that secure mounting bracket (8) to the cylinder block.

6. Slide mounting bracket (8) horizontally away from the cylinder block in order to remove the mounting bracket.

   Note: Avoid placing any strain on the fuel injection lines when the fuel manifold is not supported by the mounting bracket.

Installation Procedure

1. Ensure that the mounting bracket for the electronic control module is clean and free from damage. If the mounting bracket is damaged, replace the bracket.
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   Illustration 4	g01342051
   Typical example

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   Illustration 5	g01342046
   Typical example

2. Position mounting bracket (8) against the cylinder block. Ensure that the two slots in the top face of the mounting bracket are aligned with bolts (11). Slide the mounting bracket into position against the cylinder block.

3. Install bolts (12) finger tight.

4. Install bolts (9) that secure fuel manifold (10) to mounting bracket (8) finger tight.

   Note: Ensure that the fuel manifold is seated against the mounting bracket before bolts (9) are tightened. Ensure that the fuel injection lines are not stressed when the bolts are tightened.

5. Tighten bolts (11) to a torque of 22 N·m (16 lb ft).

6. Tighten bolts (12) to a torque of 22 N·m (16 lb ft). Tighten bolts (9) to a torque of 22 N·m (16 lb ft).
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   Illustration 6	g01342045
   Typical example

7. Install terminal insulator (6) to mounting bracket (8). Connect wire (7) to the terminal insulator. Refer to Disassembly and Assembly, "Glow Plugs - Remove and Install" for the correct procedure.

8. Follow Steps 1.b through 1.c in order to connect engine wiring harness (2).

   1. Connect harness assembly (2) to fuel pressure sensor (3).

   2. Slide locking tab (4) into the locked position.

   3. Position harness assembly (2) onto mounting bracket (8). Use new cable straps (1) and (5) in order to secure the harness assembly.

End By:

1. Install the electronic control module. Refer to Disassembly and Assembly, "Electronic Control Module - Remove and Install".