Specifications
| Description | Nm |
|---|---|
| Catalytic converter retaining studs - vehicles without diesel engines | 9 |
| Catalytic converter to exhaust manifold retaining nuts - vehicles without diesel engines | A |
| Catalytic converter - right-hand; to transfer case mounting bracket retaining bolts - vehicles without diesel engines | 25 |
| Catalytic converter - left-hand; to support bracket retaining bolts - vehicles without diesel engines | 25 |
| Muffler and tailpipe clamp retaining nut - all vehicles | 55 |
| Front muffler to muffler inlet pipe retaining nuts - vehicles without diesel engines | 55 |
| Muffler inlet pipe to front pipe retaining nut and bolt - vehicles without diesel engines | 55 |
| Exhaust hanger to front muffler retaining bolt - all vehicles | 25 |
| Heated oxygen sensor (HO2S) - vehicles without diesel engines | 40 |
| Catalyst monitor sensor - vehicles without diesel engines | 40 |
| Exhaust hanger to body retaining bolts - all vehicles | 25 |
| Exhaust heat shield retaining bolts - vehicles without diesel engines | 10 |
| Catalytic converter heat shield retaining bolts - vehicles without diesel engines | 10 |
| Air cleaner bracket retaining nuts - vehicles without diesel engines | 6 |
| Catalytic converter to turbocharger retaining nuts - vehicles with diesel engines | 46 |
| Catalytic converter retaining bolts - vehicles with diesel engines | 46 |
| Turbocharger heatshield retaining nuts - vehicles with diesel engines | 8 |
| Turbocharger heatshield retaining bolts - vehicles with diesel engines | 8 |
| Exhaust flexible pipe to catalytic converter retaining nuts - vehicles with diesel engines | 46 |
| Front muffler to exhaust flexible pipe retaining nuts - vehicles with diesel engines | 46 |
| A = refer to the procedure for correct torque sequence |
Torque Specifications
Scheme 17
| Item Number | Description |
|---|---|
| 1 | Exhaust hanger |
| 2 | Exhaust hanger isolator |
| 3 | Exhaust hanger isolator |
| 4 | Exhaust hanger |
| 5 | Exhaust hanger |
| 6 | Exhaust hanger isolator |
| 7 | Catalytic converter - R/H |
| 8 | Catalytic converter - L/H |
| 9 | Front pipe |
| 10 | Muffler inlet pipe |
| 11 | Front muffler |
| 12 | Muffler and tailpipe |
| 13 | Exhaust hanger |
Scheme 18
| Item Number | Description |
|---|---|
| 1 | Exhaust manifold - R/H |
| 2 | Muffler and tailpipe assembly |
| 3 | Exhaust hanger |
| 4 | Exhaust hanger isolator |
| 5 | Exhaust hanger isolator |
| 6 | Exhaust hanger |
| 7 | Front muffler |
| 8 | Exhaust hanger isolator |
| 9 | Exhaust hanger isolator |
| 10 | Front muffler to muffler inlet pipe gasket |
| 11 | Muffler inlet pipe |
| 12 | Catalytic converter - L/H, support bracket |
| 13 | Catalytic converter - L/H |
| 14 | Exhaust manifold - L/H |
| 15 | Front pipe |
| 16 | Catalytic converter - R/H |
Scheme 19
| Item Number | Description |
|---|---|
| 1 | Catalytic converter |
| 2 | Exhaust flexible pipe |
| 3 | Exhaust hanger isolator |
| 4 | Front muffler |
| 5 | Exhaust hanger isolator |
| 6 | Muffler and tailpipe |
| 7 | Exhaust hanger isolator |
| 8 | Exhaust hanger isolator |
| 9 | Exhaust hanger |
Scheme 20
| Item Number | Description |
|---|---|
| 1 | Catalytic converter |
| 2 | Exhaust hanger |
| 3 | DPF |
| 4 | Exhaust hanger isolator |
| 5 | Rear pipe |
| 6 | Exhaust hanger isolator |
| 7 | Muffler |
| 8 | Exhaust hanger isolator |
| 9 | Exhaust flexible pipe |
All petrol vehicles are fitted with a stainless steel exhaust system consisting of
- Catalytic converter(s)
- Front pipe
- Muffler inlet pipe
- Front muffler assembly
- Muffler and tailpipe assembly
The exhaust system is designed to meet the rising standards of vehicle emissions, complying with LEV (USA) and stage three (Europe) emission legislation; effective from January 2001.
The exhaust system is supported at the front by the two catalytic converters which are retained directly to the exhaust manifolds by studs and nuts. The remainder of the exhaust system is supported by four rubber hanger isolators. On 2.0L and diesel vehicles there are three attached to the front muffler assembly and one attached to the rear muffler. On 2.5L and 3.0L vehicles there is one attached to the front muffler and three attached to the rear muffler and tail pipe assembly.
A flexible coupling, which is part of the front muffler, is fitted to isolate the exhaust system from engine movement and vibration.
For 2.5L and 3.0L vehicles the rear exhaust muffler and tail pipe assembly is manufactured in one section which consists of a 'Y' pipe joined to the two rear muffler and tail pipes. A service fix is provided for replacement of the rear mufflers and tail pipes. For 2.0L and diesel vehicles there is a single rear muffler assembly which is attached to the left-hand side of the vehicle.
See also:
• Lifting