Renault Laguna III Manual page 1601

Catalytic converter: Removal - Refitting
K4M or M4R
Tightening torquesm
exhaust flange bolts
IMPORTANT
Wear protective gloves during the operation.
Note:
Before carrying out work on the catalytic converter
(see 19B, Exhaust, Exhaust: Precautions for the
repair, page 19B-18) .
REMOVAL
I - REMOVAL PREPARATION OPERATION
a Position the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 415, 02A, Lifting equip-
ment).
a Disconnect the battery (see Battery: Removal - Re-
fitting) (MR 415, 80A, Battery).
a Remove:
- the engine cover,
- the engine undertray bolts,
- the engine undertray,
- upstream and downstream (see 17B, Petrol injec-
tion, Oxygen sensors: Removal - Refitting, page
17B-17) oxygen sensors.
a Cut the exhaust pipe in the marked cutting zone (see
19B, Exhaust, Exhaust: Precautions for the re-
pair, page 19B-18) and (see Exhaust: Parts and
consumables for the repair) .
EXHAUST
II - REMOVAL OPERATION FOR PART
CONCERNED
21 Nm
a Remove:
- the bolts (1) from the exhaust flange,
- the catalytic converter,
- the exhaust flange sealing ring.
REFITTING
I - REFITTING PREPARATIONS OPERATION
a Use ABRASIVE PADS to clean the catalytic con-
verter bearing faces on the exhaust manifold (see
Vehicle: Parts and consumables for the repair)
(MR 415, 04B, Consumables - Products).
a Next, degrease these bearing faces using SUR-
FACE CLEANER and clean cloths (see Vehicle:
Parts and consumables for the repair) (MR 415,
04B, Consumables - Products).
19B-35
IMPORTANT
Catalytic converters contain ceramic fibres; these
are contained within a closed unit, and cannot
disperse. Cutting or drilling catalytic converters is
prohibited.
19B
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