C9.3 Engines for Caterpillar Built Machines Exhaust Cooler (NRS) - Remove and Install Caterpillar

Removal Procedure

Note: Due to various machine configurations, components will need to be removed that are not called out in this procedure. Refer to the appropriate manual to remove the necessary components.

1. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change" for the proper draining and filling procedures.

   Note: Step 2 through Step 4 may not apply to all engine configurations. If so, then start with Step 5.

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Illustration 1	g02763336

2. Disconnect hose assembly (2) .

3. Remove hose (1) , hose (3) , the adapters, and the clips.

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Illustration 2	g02763418

4. Position oil level gauge (4) out of the way. Remove bracket assembly (5) .

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Illustration 3	g02763456

5. Loosen band clamps (6) and the hose.

   Note: The band clamps and hose are one-time use components. Discard upon removal and install new.

6. Loosen clamps (10) . Remove bolts (8) and (11) .

7. Remove exhaust cooler (7) . Remove bellows (9) and clamps (10) from exhaust cooler (7) .

   Note: Note the orientation of the bellows. The arrow should point toward the exhaust cooler.

8. Remove tubes (12) . Remove the O-ring seals from tubes (12) .

Installation Procedure

1. Install exhaust cooler (7) in the reverse order.

   1. Apply a light coating of Tooling (A) to the bores and the O-ring seals for tubes (12) .

   2. Install new bellows (9) and clamps (10) . Tighten clamp assemblies (10) to a torque of 7.5 ± 1 N·m (66 ± 9 lb in).

      Note: The arrow on the bellows should point toward the exhaust cooler. Total misalignment for the bellows is 1.50 mm (0.06 inch) lateral and 1.50 mm (0.06 inch) axial.

   3. Tighten bolts (11) to a torque of 55 ± 10 N·m (41 ± 7 lb ft).