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Silencer with mountings - Assembly overview (Altea, Altea XL, Leon) > < Parts of the exhaust system: removing and fitting

Leon Mk1

Catalytic converter and attachment parts - Assembly overview (Altea, Altea XL, Leon)
   
Catalytic converter and attachment parts - Assembly overview (Altea, Altea XL, Leon)
1 - Lambda probe -G39-, 50 Nm
q   Only grease the thread with „G 052 112 A3“.
q   The „G 052 112 A3“ must not reach the probe body grooves.
q   Removing and installing with the wrench kit -3337-
2 - 23 Nm
q   Renew.
q   Lubricate the studs of the exhaust manifold with high-temperature lubricant.
q   Tightening torque and sequence → Fig.
3 - Catalytic converter with exhaust pipe
q   removing and installing → Chapter
4 - Gasket
q   Renew.
5 - Gasket
q   Renew.
6 - Exhaust pipe
7 - Double clamp, 25 Nm
q   Mounting position and specified torque → Chapter.
q   Tighten bolted connections evenly.
8 - 25 Nm
q   Renew.
9 - Exhaust pipe
q   With flexible connection (de-coupling element).
q   Do not bend the coupling element by more than 10°. It could be damaged.
10 - Mounting
11 - 25 Nm
12 - 25 Nm
q   Renew.
13 - Gasket
q   Renew.
14 - Stage I 18 Nm, Stage II 12 Nm, Stage III 12 Nm
  Caution
Tighten the fixing nuts in 3 stages when considering the following tightening sequences → Chapter.
In this way, the correct seating of the seal is guaranteed.
If they are not tightened in 3 stages, leaks will be caused between the cylinder head and the exhaust manifold.
q   Observe tightening sequence → Chapter.
q   Tightening torque of the studs in the cylinder head. 18 Nm (assemble using oil)
15 - 20 Nm
16 - Support
17 - Turbocharger
q   With the charge pressure actuator -V465-
q   removing and installing → Chapter
  Note
The turbocharger can only be replaced completely with the exhaust manifold and the charge pressure actuator -V465-.
18 - Heat shield
q   When assembling, first tighten the fastening bolts by hand
19 - 10 Nm
q   When assembling, first tighten the fastening bolts by hand
20 - Heat shield
q   When assembling, first tighten the fastening bolts by hand
21 - 10 Nm
q   When assembling, first tighten the fastening bolts by hand
q   Tightening torque and sequence → Fig.
22 - 10 Nm
q   When assembling, first tighten the fastening bolts by hand
q   Tightening torque and sequence → Fig.
23 - Lambda probe after catalytic converter -G130-
q   Specified torque: 50 Nm
q   Only grease thread with „G 052 112 A3“. The „G 052 112 A3“ must not reach the probe body grooves
q   If seal is leaking, nip open and renew.
24 - 10 Nm
q   When assembling, first tighten the fastening bolts by hand
25 - 25 Nm
q   Tightening torque and sequence → Fig.

   
Catalytic converter - tightening torque and sequence
  Note
Renew nuts.
–  Tighten the nuts and bolts in 4 stages as follows:
  A26-10697
StageBolts/nutsSpecified torque .
1.-arrows-Screw in by hand until it stops.
2.-1-25 Nm
3.-2-25 Nm
4.-arrows-23 Nm

   
Heat shield - tightening torque
–  Tighten the bolts in 2 stages in the sequence indicated:
  A21-10505
StageBoltsSpecified torque .
1.-arrows-Screw in by hand until it stops.
2.-arrows-9 Nm

   
Installation position of front clamps
–  Fit the clamping sleeves at the indicated angle.
l  Bolt connections face to right.
l  Nuts face upwards.
l  α = approx. 20°
  A26-10447
Installation position of rear clamps
–  Install clamp so that ends of bolts do not protrude beyond bottom of clamp.
l  Bolt connections face to rear.
  A26-0159

Silencer with mountings - Assembly overview (Altea, Altea XL, Leon) > < Parts of the exhaust system: removing and fitting