Catalytic Converter: Service and Repair

LEGEND
1 Bracket
2 Heat Shield Nut
3 Heat Deflector
4 Union
5 EGR Valve (If Equipped)
6 EGR Temperature Sensor (If Equipped)
7 Fitting
8 Gland Nut
9 Cap (If Equipped)
10 Bolt
11 CO Tap Tube (If Equipped)
12 Heated Oxygen Sensor (H02S)
13 Three Way Catalytic Converter (TWC)
14 Seal
15 Nut
16 Heat Shield
17 Front Exhaust Pipe
18 Gasket
19 Exhaust Manifold
20 Spacer Bushing

NOTE:
- During removal and installation procedures, refer to the component location illustration above and component notes below.
- After repairs be sure that the exhaust system is not under tension and that there is sufficient clearance between the exhaust system and the body.
- If necessary, loosen all clamps and align muffler and exhaust pipes for sufficient clearance and even load distribution at all mounting rings.
- Always replace self-locking nuts.

COMPONENT NOTES
Bracket (1)
- For Heat Deflector.

Heat Shield Nut (2)
- Tighten to: 25 Nm (18 ft. lbs.).

Union (4)
- Tighten to: 35 Nm (30 ft. lbs.).

Gland Nut (8)
- Tighten to: 30 Nm (22 ft. lbs.).

Bolt (10)
- Tighten to: 10 Nm (7 ft. lbs.).

H02S (12)
- Tighten to: 50 Nm (36 ft. lbs.).
- Lubricate threads with "G5", or equivalent, anti-seize.
- Anti-seize must not get in or near slots of sensor.

Seal (14)
- Always replace.

Nut (15)
- Tighten to: 40 Nm (30 ft. lbs.).
- Refer to tightening sequence shown below.





Front Exhaust Pipe (17)
- Refer to tightening sequence shown.