Catalytic Converter: Service and Repair

Catalytic Converter - RH - KV6 - NAS

Service Repair No - 17.50.01

Remove
1. Position vehicle on 4 post ramp.
2. Disconnect battery earth lead.
3. Remove engine acoustic cover.







4. Release pre catalyst HO2S harness from clips.
5. Release and disconnect HO2S multiplug.
6. Remove intermediate pipe and silencer.







7. Remove 3 bolts and remove LH heat shield.







8. Remove 2 bolts and remove RH heat shield.







9. Release post catalyst HO2S harness from clips.
10. Release and disconnect post catalyst HO2S multiplug.







11. Remove 2 bolts securing pipe clamp and remove clamp.







12. Remove 2 nuts securing catalyst, remove catalyst and discard gasket.


NOTE: Do not carry out further dismantling if component is removed for access only.


13. Identify and remove both HO2S from catalyst.

Refit
1. Clean HO2S and mating faces.
2. Fit both HO2S and tighten to 55 Nm (40 ft. lbs.).
3. Clean catalyst and mating face.
4. Using a new gasket, fit catalyst and fit nuts but do not tighten at this stage.
5. Fit clamp, fit bolts but do not tighten at this stage.
6. Connect post catalyst HO2S multiplug and fit to bracket.
7. Fit harness into clips.
8. Fit heat shields and tighten bolts to 10 Nm (7 ft. lbs.).
9. Fit intermediate pipe and silencer.
10. Tighten nuts securing catalyst to manifold to 50 Nm (37 ft. lbs.).
11. Tighten bolts securing clamp to 10 Nm (7 ft. lbs.).
12. Connect pre catalyst HO2S multiplug and fit to bracket.
13. Fit harness into clips.
14. Fit acoustic cover.
15. Connect battery earth lead