C15 and C18 Industrial Engines Flame Detection Temperature Sensor - Remove and Install - Clean Emissions Module Caterpillar

Removal Procedure

1. Turn the fuel supply to the OFF position and turn the power disconnect switch to the OFF.

2. Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant - Change".
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   Illustration 1	g02201253
   This is a view of the engine compartment from the left side of the machine.

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   Illustration 2	g02201257

3. Remove bolt (1).

   Note: Cap all tube assemblies and fittings that are disconnected in order to prevent fluid loss. This will also keep contaminants out of the systems.

4. Disconnect tube assemblies (2), (3), (4), and (5).
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   Illustration 3	g02201258

   Note: Cap all tube assemblies and fittings that are disconnected in order to prevent fluid loss. This will also keep contaminants out of the systems.

5. Disconnect tube assemblies (6), (7), and (8).

6. Carefully remove the tube assemblies as one unit from the right side of the machine.
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   Illustration 4	g02199957

   Note: Put orientation and location marks on all cable strap locations and on all insulation wraps for installation purposes.

7. Remove cable straps and remove flame detection temperature sensor (9).
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   Illustration 5	g02201433

   Note: Put orientation and location marks on all cable strap locations and on all insulation wraps for installation purposes.

8. Disconnect the harness assembly that attaches to flame detection temperature sensor (10). Remove all cable straps that secure the sensor.
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   Illustration 6	g02201534

   Note: Put orientation and location marks on all cable strap locations and on all insulation wraps for installation purposes.

9. Remove the inlet temperature sensor (11).

Installation Procedure

1. Install the flame detection temperature sensor in the reverse order.

   1. Apply Tooling (A) to the threads on flame detection temperature sensor (9) and to the threads of inlet temperature sensor (11). Tighten the flame detection temperature sensor (9) and the inlet temperature sensor (11) to a torque of 45 ± 5 N·m (33 ± 4 lb ft).

   2. Tighten tube assemblies (8) to a torque of 16 ± 2 N·m (142 ± 18 lb in).

   3. Tighten tube assembly (6) to a torque of 11 ± 2 N·m (97 ± 18 lb in).

   4. Tighten tube assembly (7) to a torque of 16 ± 2 N·m (142 ± 18 lb in).

   5. Tighten tube assembly (5) to a torque of 20 ± 2 N·m (177 ± 18 lb in).

   6. Tighten tube assembly (4) to a torque of 16 ± 2 N·m (142 ± 18 lb in).

   7. Tighten tube assembly (3) to a torque of 43 ± 4 N·m (32 ± 3 lb ft).

   8. Tighten tube assembly (2) to a torque of 27 ± 3 N·m (239 ± 27 lb in).