Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 728

2

Emissions Control

⇒ “2.1 Overview - Emissions Control”, page 348

 .

⇒ “2.2 Catalytic Converter, Removing and Installing”, page 349

 .

2.1

Overview - Emissions Control

1 - Bolt

❑ 20 Nm

2 - Bracket

❑ Replace if damaged

3 - Bolt
Tightening specification and

sequence. Refer to

⇒ Fig. ““Catalytic Converter -

Tightening Specification and

Sequence”“ , page 349

 .

4 - Nut
Tightening specification and

sequence. Refer to

⇒ Fig. ““Catalytic Converter -

Tightening Specification and

Sequence”“ , page 349

 .

5 - Bracket

❑ For catalytic converter

6 - Catalytic Converter

❑ With front exhaust pipe
❑ Protect catalytic con‐

verter from shocks and

impact stress

❑ Removing and instal‐

ling. Refer to

⇒ “2.2 Catalytic Con‐

verter, Removing and

Installing”, page 349

 .

❑ Align the exhaust sys‐

tem free of tension. Re‐

fer to

⇒ “1.4 Exhaust System,

Installing without Ten‐

sion”, page 345

 .

7 - Screw-Type Clamp

❑ Replace after removing
❑ Installed position. Refer to

⇒ Fig. ““Installed Location of the Catalytic Converter Screw Clamp”“ , page 349

❑ Tightening specification and sequence. Refer to

⇒ Fig. ““Catalytic Converter - Tightening Specification and Sequence”“ , page 349

 .

8 - Seal

❑ Replace after removing

9 - Turbocharger

❑ Removing and installing. Refer to 

⇒ “1 Turbocharger”, page 256

 .

10 - Nut
Tightening specification and sequence. Refer to

⇒ Fig. ““Catalytic Converter - Tightening Specification and Sequence”“ , page 349

 .

11 - Nut

❑ 30 Nm

12 - Front Clamping Sleeve

❑ Before tightening, align exhaust system free of tension. Refer to

⇒ “1.4 Exhaust System, Installing without Tension”, page 345

 .

❑ Installed position. Refer to 

⇒ “1.6 Clamping Sleeve Installation Position”, page 347

❑ Tighten threaded connections evenly.

– Install the clamping sleeve in the shown position. The threa‐

ded connection -arrows- must not project over the lower edge

of the clamp.

Installed Location of the Catalytic Converter Screw Clamp
– Install the screw-type clamp in the shown position. The threa‐

ded connection -arrow- must have equal distance to the other

components.

Catalytic Converter - Tightening Specification and Sequence
– Tighten the threaded connections in steps in the sequence

shown:

Step Threaded Con‐

nections/Nuts

Tightening Specification

1.

-1, 3 and 4-

Install all the way in by hand.

• It must be possible to slide the cat‐

alytic converter and bracket back

and forth.

2.

-2-

15 Nm Note the installation position.

Refer to

⇒ Fig. ““Installed Location of the Cat‐

alytic Converter Screw Clamp”“ , page

349

 .

3.

-1, 3 and 4-

20 Nm

2.2

Catalytic Converter, Removing and In‐

stalling

Special tools and workshop equipment required
♦ Hot bolt paste. Refer to the Parts Catalog.

Caution

This procedure contains mandatory replaceable parts. Refer

to component overview prior to starting procedure.

Mandatory Replacement Parts
♦ Seal - Catalytic Converter
Removing

Note

During installation, all cable ties must be installed at the same

location.

– Remove the connector -2- from the bracket and disconnect it.

Free up the wires.

– Remove the bolt -2- and the screw-type clamp.

Note

♦

The installed position is shown in the illustration with the en‐

gine removed.

♦

Ignore item -4-.

– Remove the nuts -1 and 3-.

– Remove the front tunnel brace -1-.

– Remove the bolts -arrows-.

– Loosen the clamping sleeve -arrow- and push it toward the

rear.

– Remove the catalytic converter with the front exhaust pipe.

Installing
– Place the screwdriver -2- into the opening -arrow- on the tur‐

bocharger and pry out the seal -1-.

– Install new seal.
– Mount the catalytic converter on the turbocharger and install

the screw-type clamp loose.

– Tighten the nuts and screw clamp. Refer to

⇒ Fig. ““Catalytic Converter - Tightening Specification and Se‐

quence”“ , page 349

 . Pay attention to the installation position

of the screw-type clamp. Refer to

⇒ Fig. ““Installed Location of the Catalytic Converter Screw

Clamp”“ , page 349

 .

– Install the exhaust system free of tension. Refer to

⇒ “1.4 Exhaust System, Installing without Tension”,

page 345

 .

Assemble in reverse order of disassembly.
Tightening Specifications
♦ Refer to 

⇒ “2.1 Overview - Emissions Control”, page 348

 .

♦ Refer to ⇒  Body Exterior; Rep. Gr.  66 ; Underbody Panel;

Overview - Underbody Panels .

♦ Refer to ⇒  Body Exterior; Rep. Gr.  66 ; Noise Insulation;

Overview - Noise Insulation .