C6.6 Industrial Engine Caterpillar

Removal Procedure

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Illustration 1	g02157893

1. Slide locking tab (2) into the unlocked position.

2. Disconnect harness assembly (1) from pressure sensor (3).

3. Remove the bolt from bracket (4) and position the bracket away from pressure sensor (3).

4. Remove bolt (5) (not shown) and Allen head bolt (8).

5. Remove bracket (9) from pressure sensor (3).

6. Remove pressure sensor (3) from manifold (7). Remove O-ring seals (6).
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   Illustration 2	g02447616

7. If necessary, follow Step 7.a through Step 7.f in order to remove manifold (7) from mounting bracket.

   1. Slide hose clamp (12) along hose (11).

   2. Remove tube assembly (10) from manifold (7) and the outlet section of the Diesel Particulate Filter (DPF).

   3. Remove tube assembly (13) from manifold (7) and the inlet section of the Diesel Oxidation Catalyst (DOC).

   4. Remove bolts (14) from manifold (7). Remove the manifold from the mounting bracket.

   5. If necessary, remove connection (15) from manifold (7). Remove O-ring seal (16).

   6. If necessary, remove connection (18) from manifold (7). Remove O-ring seal (17).

Installation Procedure

1. If necessary, follow Step 1.a through Step 1.h in order to install manifold (4) for the pressure sensor.
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   Illustration 3	g02447616

   1. Install a new O-ring seal (16) to connection (15). Install the connection to manifold (7). Tighten the connection to a torque of 10 N·m (89 lb in).

   2. Install a new O-ring seal (17) to connection (18). Install the connection to manifold (7). Tighten the connection to a torque of 10 N·m (89 lb in).

   3. Position manifold (7) onto the mounting bracket. Loosely install bolts (14).

   4. Loosely install tube assembly (13) to manifold (7) and the inlet section of the Diesel Oxidation Catalyst (DOC).

   5. Loosely install tube assembly (12) to manifold (7) and the outlet section of the Diesel Particulate Filter (DPF).

   6. Tighten bolts (14) to a torque of 12 N·m (106 lb in).

   7. Securely tighten tube assembly (10) and tube assembly (13).

   8. Slide hose clamp (12) along hose (11).
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   Illustration 4	g02157893

2. Install new O-ring seals (6) to manifold (7).

3. Position pressure sensor (3) onto manifold (7). Position bracket (9) onto pressure sensor (3).

   Note: Ensure the correct orientation of the pressure sensor.

4. Install Allen head bolt (8) and bolt (5) (not shown) to bracket (9). Hand tighten bolt (5) (not shown) and Allen head bolt (8).

   Note: Ensure that the pressure sensor is correctly seated onto the manifold.

5. Tighten Allen head bolt (8) to a torque of 2 N·m (17 lb in).

   Tighten bolt (5) (not shown) to a torque of 12 N·m (106 lb in).

6. Position the bracket and install the bolt for bracket (4). Tighten the bolt to a torque of 12 N·m (106 lb in).

7. Connect harness assembly (1) to pressure sensor (3). Slide locking tab (2) into the locked position.