C7.1 Industrial Engine Relay (ARD Nozzle Heater) - Remove and Install - Clean Emissions Module Caterpillar

Removal Procedure

1. Turn the battery disconnect switch to the OFF position.
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   Illustration 1	g02156274
   Typical example

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   Illustration 2	g02156273

2. Cut cable straps (3) from harness assembly (4).

   Note: Note position of cable straps. Ensure that all cable straps are removed for the harness assemblies.

3. Slide the locking tab for the harness assembly (4) into the unlocked position.

4. Disconnect harness assembly (4) from harness assembly connection (5) for the clean emission module.

5. Remove bolts (1) and spacers.

   Note: Note position and orientation of any brackets that are attached to the relay assembly.

6. Remove relay assembly (2) from the bracket for the clean emission module.

7. If necessary, follow Step 7.a through Step 7.b in order to remove relay assembly (2) from bracket (6).

   1. Remove bolts (7) from relay assembly (2) and remove bracket (6).

      Note: Note the orientation of the bracket for installation purposes.

   2. Remove relay (2) from bracket (6).

Installation Procedure

1. Ensure that all components are clean and free from wear and damage. If necessary, replace any components that are worn or damaged.
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   Illustration 3	g02156273

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   Illustration 4	g02156274
   Typical example

2. If necessary, follow Step 2.a through Step 2.b in order to install relay assembly (2) to bracket (6).

   1. Position relay assembly (2) onto bracket (6).

      Note: Ensure the correct orientation of the relay assembly on the bracket.

   2. Install bolts (7) to relay assembly (2) and tighten the bolts to a torque of 9 N·m (80 lb in).

3. Position brackets onto relay assembly (2) and install bolts (1) and spacers.

   Note: Ensure correct position and orientation of the brackets.

4. Position relay assembly (2) onto the bracket for the clean emission module.

   Note: Ensure that the relay assembly is correctly oriented on the clean emission module bracket.

5. Tighten the bolts to a torque of 12 N·m (142 lb in).

6. Connect harness assembly (4) to harness assembly connection (5) for the clean emission module.

7. Install cable straps (3) to harness assembly (4).

   Note: Ensure that cable straps meet the Original Equipment Manufactures (OEM) specification.

8. Turn the battery disconnect switch to the ON position.