Special Tools and Technical Procedures

A. Converter Bead Replacement Tool Kit

Each Buick dealer was shipped during March, 1983, one (1) complete catalytic converter bead replacement tool kit J-34155, no charge. Each kit consists of:

J-34155-1 Sifting Pan (1)
J-34155-2 Storage Pans (2)
J-34155-3 Funnel (1)

In the event additional kits are required by the dealer, they may be purchased from:

Kent-Moore Tool Division Kent-Moore Corporation 29784 Little Mack Roseville, MI 48066
B. Converter Plug Installer

Converter plug installer J-34118, part of the 1984 Essential Service Tool Program.

FIGURE 1 - CATALYTIC CONVERTER:

TECHNICAL PROCEDURE

A. Inspection

1. Install seat and fender covers and raise vehicle on hoist.

2. Determine part number of converter on vehicle. Refer to Figure 1 for location of catalytic converter part number.
a. If converter is part number 25056620, it should not be replaced. Lower vehicle and install campaign identification label, Part C of this procedure.

b. If the converter is not identified as part number 25056620, it should be replaced with converter included in kit 25056983, as instructed in Part B of this procedure.
PART B - CONVERTER REPLACEMENT

CAUTION: The catalytic converter beads contain platinum, palladium, and/or rhodium. Additionally, the beads may be finely coated with lead compounds. Therefore, precautions should be taken to minimize dust generation during the replacement procedure. These precautions include:

^ Catalyst dust should be controlled by wetting with water prior to bead removal, as described in Step 4.

^ The use of a suitable dust mask, rubber gloves, and safety glasses is recommended when handling catalyst beads.

^ Applicable OSHA standards should be reviewed.

^ Allow converter to cool before handling.
1. Loosen clamp and disconnect AIR pipe from converter.

2. Disconnect intermediate exhaust pipe and hanger from rear of converter.

3. Remove clamp and disconnect converter from front exhaust pipe.

4. Stand the old converter upright on the inlet end and pour 16 ounces of water into the outlet end to control catalyst dust.

FIGURE 2 - LOWER BED OF THE NEW CONVERTER:

5.. Using a hammer and chisel, remove the fill hole plug from the lower bed. (the smooth side of the converter is the lower bed side). See Figures 1 and 2.
6. Hold the converter over a clean pan (J-34155-2) and empty the catalyst beads by shaking.

It may be necessary to tag the converter belt flange with a hammer to loosen the beads.

7. Pour the beads into a sifting pan (J-34155-1) and sift to remove undersized beads.

Unusable beads and dust can be returned via exchange program described in GMWDD Bulletin IB NO. 83-138.

8. Prop the new converter up at a 45 degree angle with the lower bed fill hole at the top.

FIGURE 2 - LOWER BED OF THE NEW CONVERTER:

9. Using funnel J-34155-3, pour the sifted beads into the lower bed of the new converter. (see Figure 2.) Tap belt flange with rubber mallet to allow beads to settle. Continue filling and tapping until converter is full. If additional beads are required to completely fill the lower bed, it will be necessary to obtain a lower bed bead kit from the parts department. Excess beads from the kit should be saved in a clean container for future use.

10. Lay the converter down on a flat surface with the lower bed fill hole on top.
11. Insert the fill plug into the lower bed fill hole. The fill plug outer rim must rest against the converter body.

FIGURE 3 - TORQUE SPECIFICAITON:

12. Insert tool J-34188 into fill plug and tighten to a torque 47 N-m (35 ft. lbs.). (see Figure 3).

13. Install new converter in vehicle reversing removal procedure (Steps 1, 2, and 3) and using new bolts and clamp as required. Torque front clamp nuts to 35 N-m (26 ft.lbs.), intermediate pipe to converter bolts to 20 N-m (15 ft.lbs.) and hanger to converter bolts to 52 N-m (38 ft.lbs.).
14. Lower vehicle and install campaign identification label, Part C of procedure.

CAMPAIGN IDENTIFICATION LABEL:

PART C - CAMPAIGN IDENTIFICATION LABEL

Each vehicle modified in accordance with the instructions outlined herein will require a Campaign Identification Label. Each label provides a space to include the campaign number, the five (5) digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. When installing label, clean the surface of the fan shroud and apply the campaign label.
DISPOSITION OF REPLACED CONVERTER

Replaced parts must be held for disposition by Buick contact personnel. Each replaced part must have a claim tag attached showing the repair order and the VIN of the vehicle from which it was removed.