II. Bead Installation

1. Install aspirator J-29132-2 to the tailpipe outlet, secure the support chain and connect a air supply to the aspirator, see Figure (1). This creates a vacuum in the converter to pull the replacement beads into place.

NOTICE:
The aspirator filter MUST be clean prior to starting this procedure. Failure to clean the filter will degrade bead installation operation.





2. Install fill tube J-29132-3 to the converter fill opening. The fill tube should be positioned to direct beads to the rear of the converter. The opening at the top of the fill tube should be pointed towards the rear of the converter, see figure (6).





3. Insert the fill tube into container of replacement catalyst so the catalyst is slowly drawn up the fill tube and into the converter, see figure (7).

NOTICE:
Do not try to draw all the beads into the converter at once. The beads must be added a small amount at a time. Forcing all the beads at once may cause improper packing and not allow the proper amount beads to be installed.

4. Proceed to draw up the beads while using an air chisel equipped with tool J-29132-4 held against side of converter under the pinch weld flange. Vibrate the converter along the flange areas while slowly drawing the replacement beads into the converter.

5. Repeat Steps 3 and 4 several times until the converter is full, and will not accept any more beads. It is IMPORTANT to vibrate the converter when it appears that no more beads can be drawn into the converter.

NOTICE:
Replacement bead containers are shipped with about 10% more beads than required for a full bead exchange.

6. Remove the fill tube from the converter.





7. Pressed plugs are replaced with a service fill plug provided in the kit, which is expanded once in place. Lightly lubricate (with light engine oil) the head of tool J-34118, and place the replacement fill plug on the end, see figure (8).

8. Insert the fill plug, with the tool, into the bead fill hole using tool J-34118. The plug outer rim must be flat and tight against converter shell. Tighten the tool with a wrench to 35 lb. ft./48 nm torque.





NOTICE:
Properly installed plugs will have a rolled ring visible on the side of the plug, see figure (9).

9. Disconnect the air supply to the aspirator and remove it from the tail pipe.

10. On C, K trucks only, install the transmission cross member (five bolts - torque to 38 lb. ft./ 52 nm.), and remove transmission support stand.

11. Empty the beads from the remover tool into the container that the replacement beads were shipped in by pouring catalyst out of fill opening. Be careful that the beads are not so hot as to melt the container.

IMPORTANT:
Removed catalyst beads must returned in the container the replacement catalyst beads were shipped in.

12. Lower the vehicle.

13. Remove the material used to block off the tail pipe on vehicles equipped with dual exhausts.

14. Start the car and listen for exhaust leaks.

15. Install the GM Campaign Identification Label.





16. Clean the aspirator filter with clean dry, shop air, see figure (10).