Service Procedure

1. Disconnect the nylon make-up air tube from the rubber elbow that is connected to the throttle body assembly (Figure 1).

2. Remove the rubber elbow from the throttle body assembly (Figure 1). Save the elbow for later use.

3. Install the provided rubber cap on the throttle body nipple.





4. Disconnect the nylon make-up air tube from the elbow on the rear of the engine (Figure 2). Discard the make-up air tube.





5. Inspect the air cleaner for the presence of a capped nipple on the rear of the right side (Figure 3).

^ If the air cleaner does NOT have a nipple on the rear of the right side, install the large end of the rubber elbow that was removed from the throttle body onto the nipple of the provided filter pack and then set the filter pack assembly aside.

^ If the air cleaner has a nipple on the rear of the right side, remove the cap from the air cleaner nipple and then install the large end of the rubber elbow that was removed from the throttle body on the air cleaner nipple so that the small end of the elbow is facing rearward and slightly upward. Skip to Step 12.

NOTE:
Very few vehicles will have a nipple on the air cleaner.

6. Remove the air cleaner cover and filter element.

NOTE:
To remove the filter element, pull up on the underside of the filter element at the end opposite of the throttle body.





7. Mark the inside of the air cleaner 1.75" (44 mm) down from the top next to the rear edge of the support rib (Figure 4).

8. Drill a 1/8" (1.6 mm) diameter pilot hole in the right side of the air cleaner at the location marked above (Figure 4).

9. Using a 3/4" (18 mm) hole saw, enlarge the hole, removing the air cleaner wall and rib.

10. Remove any debris from the hole and air cleaner.





11. Install the filter pack assembly through the air cleaner hole so that the filter pack is inside the air cleaner with the open side facing rearward and the small end of the rubber elbow is outside of the air cleaner, facing rearward and slightly upward (Figure 5).

Note:
The rubber elbow should fit tightly through the hole. If necessary, use a rubber lubricant to ease installation.





12. Connect the provided make-up air tube to the rubber elbow at the rear of the engine (Figure 6).

NOTE:
Route the make-up air tube under the positive battery cable and above the brake booster vacuum hose.

13. Connect other end of the make-up air tube to the rubber elbow on the air cleaner (Figure 6).

14. Install the air cleaner filter element, if necessary, by sliding it over the throttle body flange while pushing downward.

15. Install the air cleaner cover, if necessary. Tighten the cover screws to 35 in-lbs (4 Nm).