Get Drive train -> 3.3 Selective catalytic reduction system Guide for Volkswagen Amarok Truck Second Generation (2022-2025)

3.2.4 Breather hose for axle venting

The breather hose for the rear differential should be fitted to the filler neck or the vehicle body. If required due to the assembly of an

auxiliary body, retrofits, or relocation of the fuel filler neck, the axle breather hose must be routed along the activated charcoal filter

system. A section of the flexible fuel hose should be attached to the vehicle body with the open end at least 600 mm (4x2)* or 800 mm

(4x4 or 4x2) above the ground. We recommend measuring this height when the vehicle is fully loaded. A breather cap can be used on the

axle breather hose.

*Only rear-wheel drive 110 kW EU4

3.3 Selective catalytic reduction system

3.3.1 Selective catalytic reduction system – diesel exhaust fluid

Warning note

–

The engine may not start if you tamper with or disable

the selective catalytic reduction system.

The engine may not start if the diesel exhaust fluid

(AdBlue®) level is low. Make sure it is topped up.

The engine may not start if the diesel exhaust fluid

(AdBlue®) is contaminated. Renew the contaminated

fluid immediately.

–

The use and refilling of diesel exhaust fluid (AdBlue®)

is mandatory for the vehicle for meeting the legal

emission requirements.

The selective catalytic reduction system helps to reduce exhaust emissions by injecting diesel exhaust fluid (AdBlue®) into the exhaust

system. For proper operation of this system, ensure that the diesel exhaust fluid (AdBlue®) is topped up regularly.

Information

–

When removing or renewing the cargo box, make sure

that the angle of the filler hose and the distances

between the fuel filler neck and the filler neck for

diesel exhaust fluid (AdBlue®) are maintained.

For more information on the diesel exhaust fluid

system (AdBlue®), refer to the owner's manual for the

vehicle.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 62 of 166

Filling the diesel exhaust fluid tank

Warning note

Diesel exhaust fluid (AdBlue®) must not come into contact

with eyes, skin or clothing. If the fluid comes into contact

with the eyes, rinse them with plenty of water and seek

medical attention. Clean affected skin with soap and water.

If swallowed, drink plenty of water and seek medical

attention immediately.

Practical note

Use only the vehicle-specific vented filler cap for diesel

exhaust fluid (AdBlue®). Use of other diesel exhaust fluid

(AdBlue®-compatible) caps may damage the system.

Information

Immediately wash off any spilled diesel exhaust fluid

(AdBlue®) on a painted surface with mild soapy water.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 63 of 166

2.0 l Turbo Diesel EU6.2

E

B

A

C

D

Item

Description

A

B

C

D

E

Pressure line for diesel exhaust fluid (AdBlue)

Injector for diesel exhaust fluid (AdBlue)

Exhaust system with selective catalytic reduction catalytic converter

Tank for diesel exhaust fluid (AdBlue)

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 64 of 166

3.0 l Turbo Diesel EU 6.2

A

E

C

D

B

Item

Description

A

Pressure line for diesel exhaust fluid (AdBlue)

Injector for diesel exhaust fluid (AdBlue)

B

C

D

E

Exhaust system with selective catalytic reduction catalytic converter

Tank for diesel exhaust fluid (AdBlue)

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 65 of 166

Tank and filler neck for diesel exhaust fluid (AdBlue)

Item

Description

A

Filler neck for diesel exhaust fluid (AdBlue)

Tank for diesel exhaust fluid (AdBlue)

Filler hose for diesel exhaust fluid (AdBlue)

B

C

Fitting the filler neck for diesel exhaust fluid – vehicles with chassis cab

Practical note

Make sure that the bracket for the filler neck is made of a

conductive material and provides an earthing path for the

filler neck.

Appropriate assembly tools and alignment of the diesel exhaust fluid filler neck and filler pipes are required if the vehicle modification will

affect the diesel exhaust fluid (AdBlue®) system.

If the vehicle body and mounting bracket do not provide an earthing path for the filler neck, an earth strap must be added to connect the

filler neck to the chassis frame.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 66 of 166

Filler neck bracket for diesel exhaust fluid

1

x3 2

Item Description

1

2

Mounting points for the diesel exhaust fluid filler neck bracket

All three mounting points on the diesel exhaust fluid filler neck must be used and tightened to 5.4 Nm.

Angle of the diesel exhaust fluid filler neck

1

2

Item Description

1

When refilling, an angle of 30° to the filler neck must be maintained to ensure a sufficient flow of the diesel exhaust fluid and to

prevent backflow.

2

The entire filler and breather hose from the filler neck to the diesel exhaust container must be at an angle of at least 2°. This is

necessary for ensuring proper filling process.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 67 of 166

Practical note

Care must be taken when fitting U-bolts or other fasteners

on the frame rail, as the diesel exhaust line can be pinched

and crushed. To avoid damaging/crushing the diesel exhaust

line, body builders/installers should inspect the underside of

the frame carriers and check the routing of the diesel

exhaust hose before fitting any parts. Make sure the diesel

exhaust line does not have an adverse effect on the

clamping surface. If additional clearance is needed for the

diesel exhaust line, the diesel exhaust line can be moved

within the existing positioning clips by rotating the diesel

exhaust line back and forth while gently pulling on the

diesel exhaust line. This will create the necessary clearance

for inserting the U-strap between the frame rail and the

diesel exhaust line.

Information

–

The finished diesel exhaust fluid filler set must have a

continuous slope of at least 2° from the filler neck to

the tank.

The diesel exhaust fluid filler hose must be routed to

ensure there is no contact with exhaust components

or sharp edges.

The routing of the diesel exhaust fluid filler hose and

the breather hose must not contain any dips.

Additional support may be required to prevent the

diesel exhaust fluid filler hose from sagging, which

could cause backing-up in a dip. A dip in the line can

cause splashing or backsplash during normal filling

operations and can also cause the collected diesel

exhaust fluid to freeze in the line and damage the

component.

–

No kinking is allowed in the diesel exhaust fluid filler

hose.

Do not extend the diesel exhaust fluid filler hose

outside the vehicle body.

If the diesel exhaust fluid filler housing supplied with

the kit is not used, the technician must ensure that the

filler neck is at an angle of at least 30° to the

horizontal.

–

If the diesel exhaust fluid filler housing supplied with

the kit is used, the three fasteners included in the kit

must be used to secure the container to the housing.

Between the diesel exhaust fluid filler assembly and

the vehicle body, a minimum of 9 mm clearance must

be maintained.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 68 of 166

A kit approved by Volkswagen Commercial Vehicles for routing the diesel exhaust fluid filler neck is available.

Contact your local Volkswagen Commercial Vehicles partner or importer.

Diesel emission fluid filler neck routing kit

The kit for routing the diesel exhaust fluid filler neck includes:

Item

Description

1

Filler housing

2

3

4

Main filler pipe (large diameter EPDM pipe)

Breather pipe (smaller diameter EPDM pipe)

Screws for fastening the filler neck to the housing

If necessary, the hoses and pipes of the diesel emission control kit can be shortened to the desired length.

Use cable ties or similar fasteners to keep the hoses and pipes within the desired routing path while the vehicle is in operation.

Information

The kit does not include cable ties, hose clips, or the

rivets/screws to secure the housing to the vehicle body.

Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition

The new Amarok – Page 69 of 166

Drive train -> 3.3 Selective catalytic reduction system for Your Volkswagen Amarok Truck Second Generation (2022-2025)

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