Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 724

– Install the pipe clamp -arrow-.
Assemble in reverse order of disassembly.

Note

Check the fuel system for leaks after completing all work.

Tightening Specifications
♦ Refer to 

⇒ “7.1 Overview - High Pressure Pump”, page 325

 .

8

Heated Oxygen Sensor

⇒ “8.1 Overview - Heated Oxygen Sensor”, page 333

 .

⇒ “8.2  Oxygen Sensor 1 before Catalytic Converter GX10 , Re‐

moving and Installing”, page 333

 .

⇒ “8.3  Oxygen Sensor 1 after Catalytic Converter GX7 , Remov‐

ing and Installing”, page 334

 .

8.1

Overview - Heated Oxygen Sensor

Oxygen Sensor Electrical Connectors
1 - Oxygen Sensor 1 after Catalytic Converter - GX7- connector
2 - Oxygen Sensor 1 before Catalytic Converter - GX10- connec‐

tor

Oxygen Sensor 1 before Catalytic Converter - GX10- -1-

Oxygen Sensor 1 after Catalytic Converter - GX7- -1-
Tightening Specifications

Component

Tightening Specification

Heated Oxygen Sensor

55 Nm

Note

♦

Coat new oxygen sensors with an assembly paste. This paste

must not come into contact with oxygen sensor slots.

♦

For a used oxygen sensor, only coat threads with hot bolt

paste. This paste must not come into contact with oxygen

sensor slots. Hot bolt paste. Refer to the Parts Catalog

♦

The oxygen sensor wire must always be attached at the same

location when installing. Do not let the electrical wire connec‐

tion come in contact with the exhaust pipe.

8.2

Oxygen Sensor 1 before Catalytic Con‐

verter - GX10- , Removing and Installing

Special tools and workshop equipment required
♦ Ring Wrench 7-Piece Set - 3337-

The Oxygen Sensor 1 before Catalytic Converter - GX10- is com‐

posed of:
♦ Heated Oxygen Sensor - G39-
♦ Oxygen Sensor Heater - Z19-
Removing
– Disconnect the connector -2- of the Oxygen Sensor 1 before

Catalytic Converter - GX10- .

– Remove the Oxygen Sensor 1 before Catalytic Converter -

GX10- -1- using a tool from the Ring Wrench 7-Piece Set -

3337- .

Installing
Note the following when installing:

Note

♦

Coat new oxygen sensors with an assembly paste. This paste

must not come into contact with oxygen sensor slots.

♦

For a used oxygen sensor, only coat threads with hot bolt

paste. This paste must not come into contact with oxygen

sensor slots. Hot bolt paste. Refer to the Parts Catalog.

♦

The oxygen sensor wire must always be attached at the same

location when installing. Do not the electrical wire connection

come in contact with the exhaust pipe.

Tightening Specifications
♦ Refer to

⇒ “8.1 Overview - Heated Oxygen Sensor”, page 333

 .

8.3

Oxygen Sensor 1 after Catalytic Con‐

verter - GX7- , Removing and Installing

The Oxygen Sensor 1 after Catalytic Converter - GX7- is com‐

posed of:
♦ Oxygen Sensor after Three Way Catalytic Converter - G130-
♦ Heater For Oxygen Sensor 2 after Catalytic Converter - Z30-
Special tools and workshop equipment required
♦ Ring Wrench 7-Piece Set - 3337-

Removing
– Disconnect the Oxygen Sensor 1 after Catalytic Converter -

GX7- connector -1-.

– Remove the Heated Oxygen Sensor -1- using a tool from the

Ring Spanner 7-Piece Set - 3337- .

Installing
Note the following when installing:

Note

♦

Coat new oxygen sensors with an assembly paste. This paste

must not come into contact with oxygen sensor slots.

♦

For a used oxygen sensor, only coat threads with hot bolt

paste. This paste must not come into contact with oxygen

sensor slots. Hot bolt paste. Refer to the Parts Catalog.

♦

The oxygen sensor wire must always be attached at the same

location when installing. Do not the electrical wire connection

come in contact with the exhaust pipe.

Tightening Specifications
♦ Refer to

⇒ “8.1 Overview - Heated Oxygen Sensor”, page 333

 .