- 1 -

CATALYTIC CONVERTER: REMOVAL - REFITTING

Note, one or more warnings are present in this procedure

Tightening torques

turbocharger outlet studs 7 Nm

catalytic converter mounting nuts on the turbocharger 26 Nm

bolts mounting the upstream stay on the engine 44 Nm

bolts mounting the downstream stay on the gearbox 21 Nm

catalytic converter upstream strut mounting bolt 25 Nm

catalytic converter downstream strut mounting bolt 21 Nm

exhaust pipe mounting bolt on the body 21 Nm

catalytic converter outlet exhaust bracket studs 7 Nm

exhaust bracket nuts 21 Nm

bolts on the ball joint bracket fitted with their springs 21 Nm

battery cover mounting bolts 4 Nm

REMOVAL

Position the vehicle on a two-post lift.

Disconnect the battery Battery: Removal - Refitting (MR 364, 80A, Battery).

Remove the engine undertray.

- 2 -

Remove:

the exhaust bracket mounting bolts (1) ,

the catalytic converter strut mounting bolt (2) .

Loosen the other stay mountings on the gearbox.

Remove the stay (3) .

- 3 -

Remove the exhaust pipe rubber mounting bush bolt (4) from the body.

Note:

Mark with a pen the position of the exhaust silentbloc supports on the vehicle body.

- 4 -

Remove the silencer rubber mounting bush bolt (5) .

Withdraw the exhaust pipe towards the rear of the vehicle.

- 5 -

Remove:

the catalytic converter upstream stay mounting bolts,

the catalytic converter strut (6) ,

the nuts (7) mounting the catalytic converter to the turbocharger,

the catalytic converter.

REFITTING

- 6 -

CAUTION

Always replace:

the catalytic converter seal,

the turbocharger - catalytic converter bracket studs.

Torque tighten the turbocharger outlet studs 7 Nm .

Fit the catalytic converter.

Pretighten in order:

the upstream strut bolts on the engine,

the upstream strut bolts on the catalytic converter,

the downstream strut bolts on the gearbox,

the downstream stay bolts on the catalytic converter,

the catalytic converter/turbocharger mounting nuts.

Tighten to torque and in order

the catalytic converter mounting nuts on the turbocharger 26 Nm ,

the bolts mounting the upstream stay on the engine 44 Nm ,

the bolts mounting the downstream stay on the gearbox 21 Nm ,

the catalytic converter upstream strut mounting bolt 25 Nm ,

the catalytic converter downstream strut mounting bolt 21 Nm ,

- 7 -

the exhaust pipe mounting bolt on the body 21 Nm .

Note:

Make sure there is no contact between the catalytic converter and the turbocharger oil return pipe.

Torque tighten:

the catalytic converter outlet exhaust bracket studs 7 Nm ,

the exhaust bracket nuts 21 Nm .

Refit the engine undertray.

Make sure that there is no contact with the underbody.

CAUTION

Any damaged heat shields must be replaced.

Connect the battery Battery: Removal - Refitting (MR 364, 80A, Battery).

Torque tighten the battery cover mounting bolts 4 Nm .

Repair-10x08x02x08-01x37-2-11-1.xml

XSL version : 3.02 du 22/07/11