Get Auxiliary/supplementary heater Guide for Volkswagen Transporter Van Sixth generation (2015-2021)

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

2

Auxiliary/supplementary heater

⇒ “2.1 Overview of fitting locations - auxiliary/supplementary heat‐

er”, page 10

⇒ “2.2 Assembly overview - auxiliary/supplementary heater, in‐

ternal”, page 12

⇒ “2.3 Assembly overview - auxiliary/supplementary heater at‐

tachments”, page 13

⇒ “2.4 Removing and installing auxiliary/supplementary heater”,

page 14

⇒ “2.5 Removing and installing air intake silencer”, page 16

⇒ “2.6 Removing and installing circulation pump V55 ”,

page 16

⇒ “2.7 Removing and installing exhaust system”, page 18

⇒ “2.8 Removing and installing cover”, page 19

⇒ “2.9 Dismantling and assembling heater unit”, page 20

⇒ “2.10 Removing and installing glow plug with flame monitor Q8

”, page 21

⇒ “2.11 Removing and installing temperature sensor G18 and

overheating sensor G189 ”, page 22

⇒ “2.12 Removing and installing auxiliary heater control unit J364

”, page 23

⇒ “2.14 Connector pin assignment for auxiliary/supplementary

heater”, page 23

2.1

Overview of fitting locations - auxiliary/supplementary heater

10

Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

1 - Auxiliary/supplementary

heater

❑ Removing and installing

⇒ page 14

❑ Dismantling and assem‐

bling ⇒ page 20

2 - Bracket for auxiliary/supple‐

mentary heater

3 - Bracket

4 - Rubber mounting

5 - Electrical connector

6 - Coolant hose

7 - Circulation pump - V55-

❑ Removing and installing

⇒ page 16

8 - Bracket

❑ For circulation pump -

V55-

9 - Exhaust system

❑ Removing and installing

⇒ page 18

10 - Bracket

❑ For circulation pump -

V55-

11 - Bolt

❑ 6 Nm

12 - Rubber mounting

13 - Bolt

❑ 20 Nm

2. Auxiliary/supplementary heater

11

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

2.2

Assembly overview - auxiliary/supplementary heater, internal

1 - Bolts

❑ Qty. 3

❑ 7 Nm

2 - Heat exchanger

❑ Removing and installing

⇒ page 20

3 - Seal

❑ Must be renewed each

time after opening

❑ Observe installation po‐

sition

4 - Combustion chamber insert

❑ Removing and installing

⇒ page 20

5 - Glow plug with flame moni‐

tor - Q8-

❑ Must be properly seated

❑ Removing and installing

⇒ page 21

6 - Cover

❑ For auxiliary heater con‐

trol unit - J364-

❑ Removing and installing

⇒ page 19

7 - Cover

8 - Auxiliary heater control unit

- J364- with combustion air

blower - V6-

Note

The auxiliary heater control unit -

J364- and the combustion air blower

- V6- with housing form one compo‐

nent and cannot be dismantled. The

reason is the seal between the aux‐

iliary heater control unit - J364- and

the housing.

9 - Noise insulation

10 - Cover

❑ Removing and installing ⇒ page 19

11 - Union

❑ Mark installation position before removing

12 - Oil seals

❑ Renew after removal

13 - Support plate

14 - Bolt

❑ 4 Nm

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Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

15 - Union

❑ Mark installation position before removing

16 - Temperature sensor - G18-

❑ Removing and installing ⇒ page 22

17 - Retaining spring

18 - Bolt

❑ 4 Nm

19 - Overheating sensor - G189-

❑ Removing and installing ⇒ page 22

2.3

Assembly overview - auxiliary/supplementary heater attachments

1 - Bracket

❑ For auxiliary heater

2 - Bolts

❑ Qty. 3

❑ 6 Nm

3 - Rubber mounting

4 - Air intake silencer

❑ Removing and installing

⇒ page 16

5 - Exhaust system

❑ Removing and installing

⇒ page 18

6 - Auxiliary/supplementary

heater

7 - Bracket

❑ For circulation pump -

V55- and air intake si‐

lencer

8 - Bolts

❑ Qty. 2

❑ For bracket of circula‐

tion pump - V55- and air

intake silencer

❑ 6 Nm

9 - Bracket

❑ For circulation pump -

V55-

10 - Circulation pump - V55-

❑ Removing and installing

⇒ page 16

11 - Clamp

12 - Coolant hose

13 - Bolt

❑ 8 Nm

2. Auxiliary/supplementary heater

13

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

14 - Coolant hose

15 - Bolt

❑ 20 Nm

16 - Rubber mounting

2.4

Removing and installing auxiliary/sup‐

plementary heater

Special tools and workshop equipment required

♦ Hose clamps to 25 mm - 3094-

♦ Engine bung set - VAS 6122-

♦ Drip tray for workshop hoist - VAS 6208-

♦ Vehicle diagnostic tester

Removing

– Connect ⇒ Vehicle diagnostic tester and start function “Renew

heater” under “Guided Fault Finding” or “Guided Functions”.

– Disconnect battery ⇒ Electrical system; Rep. gr. 27 ; Battery;

Disconnecting and connecting battery .

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Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

– Remove left underbody cladding ⇒ General body repairs, ex‐

terior; Rep. gr. 66 ; Underbody cladding; Assembly overview

- underbody cladding .

– Clamp off coolant hoses of auxiliary heater using hose clamps

up to 25 mm - 3094- .

– Open hose clips of coolant hoses.

– Place drip tray for workshop hoist - VAS 6208- underneath.

CAUTION

On a warm engine, the cooling system is under high pressure.

Risk of scalding from steam or hot coolant.

Skin and other parts of the body may be scalded.

– Wear protective gloves.

– Wear safety goggles.

– To relieve pressure, cover the cap of the coolant expansion

tank with a cloth, and open it carefully.

– Pull off coolant hoses from auxiliary heater.

CAUTION

The fuel system is pressurised.

Risk of injury caused by fuel spray.

– Wear safety goggles.

– Wear protective gloves.

– To release pressure, wrap a clean cloth around the connec‐

tion, and carefully loosen the connection.

– Pull off fuel line from auxiliary heater to metering pump - V54-

and seal with engine bung set - VAS 6122- .

– Secure auxiliary heater with welding wire to prevent it from

falling down.

– Disconnect electrical connectors.

– Unscrew bolt -3- from bracket -1-.

Note

Observe the installation position of the rubber disc -2-.

2. Auxiliary/supplementary heater

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Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

– Lower auxiliary heater -1- with bracket -2- in direction of

-arrow-.

– Pull out auxiliary heater -1- with bracket -2- from rubber mount‐

ings -3-.

Installing

Install in reverse order of removal, observing the following:

– Bleed coolant circuit ⇒ Rep. gr. 19 ; Cooling system, coolant;

Draining and filling coolant .

Torque settings

♦ ⇒ “2.3 Assembly overview - auxiliary/supplementary heater

attachments”, page 13

2.5

Removing and installing air intake si‐

lencer

Removing

– Remove left underbody cladding ⇒ General body repairs, ex‐

terior; Rep. gr. 66 ; Underbody cladding; Assembly overview

- underbody cladding .

– Unscrew bolts -3-.

– Lower auxiliary heater -2- in direction of -arrow A-.

Note

The lines and coolant hoses remain connected.

– Release spreader clip of air intake silencer -1- in direction of

-arrow B-.

– Pull off air intake silencer from auxiliary heater -2-.

Installing

Install in reverse order of removal, observing the following:

Note

♦ The air intake silencer must not touch the auxiliary/supple‐

mentary heater housing.

♦ Do not kink or crush aluminium pipe.

Torque settings

♦ ⇒ “2.3 Assembly overview - auxiliary/supplementary heater

attachments”, page 13

2.6

Removing and installing circulation

pump - V55-

Special tools and workshop equipment required

16

Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

♦ Hose clamps to 25 mm - 3094-

♦ Drip tray for workshop hoist - VAS 6208-

Removing

– Remove left underbody cladding ⇒ General body repairs, ex‐

terior; Rep. gr. 66 ; Underbody cladding; Assembly overview

- underbody cladding .

CAUTION

On a warm engine, the cooling system is under high pressure.

Risk of scalding from steam or hot coolant.

Skin and other parts of the body may be scalded.

– Wear protective gloves.

– Wear safety goggles.

– To relieve pressure, cover the cap of the coolant expansion

tank with a cloth, and open it carefully.

2. Auxiliary/supplementary heater

17

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

– Clamp off coolant hoses -1- on circulation pump - V55- -5- us‐

ing hose clamps, up to 25 mm - 3094- .

– Disconnect electrical connector -3-.

– Loosen hose clips -2- and pull off coolant hoses.

– Pull coolant hoses -1- off circulation pump - V55- -5-.

– Pull off rubber mounting -4- with circulation pump - V55- -5-

from bracket.

Installing

Install in reverse order of removal, observing the following:

– Bleed cooling system ⇒ Rep. gr. 19 ; Cooling system, coolant;

Draining and filling with coolant .

2.7

Removing and installing exhaust system

Removing

– Remove left underbody cladding ⇒ General body repairs, ex‐

terior; Rep. gr. 66 ; Underbody cladding; Assembly overview

- underbody cladding .

CAUTION

Danger of severe burns from hot exhaust system.

Risk of burns to hands and other parts of body.

– Allow exhaust system to cool down.

– Unscrew bolt -2-.

– Pull off exhaust system -1- from heat exchanger in direction of

-arrow-.

Installing

Install in reverse order of removal, observing the following:

Risk of damage to lines

Lines may become damaged by moving or hot components.

– Route lines in their original positions.

– Ensure there is sufficient clearance to moving or hot compo‐

nents.

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Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

Torque settings

♦ ⇒ “2.3 Assembly overview - auxiliary/supplementary heater

attachments”, page 13

2.8

Removing and installing cover

⇒ “2.8.1 Removing and installing cover, auxiliary heater control

unit J364 ”, page 19

⇒ “2.8.2 Removing and installing cover, burner unit”, page 19

2.8.1

Removing and installing cover, auxiliary

heater control unit - J364-

Removing

– Remove auxiliary heater ⇒ page 14 .

– Unclip cover -1- in area -2-.

– Detach cover -1-.

– Detach cover -3-.

Installing

Install in reverse order of removal.

2.8.2

Removing and installing cover, burner

unit

Special tools and workshop equipment required

♦ Torque wrench - V.A.G 1410-

2. Auxiliary/supplementary heater

19

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

Removing

– Remove auxiliary heater ⇒ page 14 .

– Unscrew bolt -3-.

– Detach coolant connections together with bracket -4-.

– Unclip cover -1- in area -2-.

– Detach cover -1-.

Installing

Install in reverse order of removal, observing the following:

– Check sealing surfaces for soiling and damage.

– Moisten oil seals with coolant before installing coolant con‐

nections.

– Renew oil seals -3-.

– Insert coolant connections together with bracket -2-.

– Tighten bolt -1-.

Torque settings

⇒ “2.2 Assembly overview - auxiliary/supplementary heater, in‐

ternal”, page 12

2.9

Dismantling and assembling heater unit

Special tools and workshop equipment required

♦ Torque wrench - V.A.G 1410-

20

Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

Dismantling

– Remove cover ⇒ page 19 .

– Unscrew bolts -1-.

– Separate electrical connectors from temperature sensor -

G18- and overheating sensor - G189- .

– Pull heat exchanger off blower housing.

– Remove seal -1-.

– Disconnect electrical connector -3-.

– Remove battery unit.

Installing

Assemble in the reverse order of dismantling, observing the fol‐

lowing:

Note

Make sure that the gasket -1-, the grommet -4- and the fuel con‐

nection -2- are positioned correctly.

– Clean sealing surfaces.

– Renew seal -1-.

Torque settings

♦ ⇒ “2.2 Assembly overview - auxiliary/supplementary heater,

internal”, page 12

2.10

Removing and installing glow plug with

flame monitor - Q8-

Removing

– Dismantle heater unit ⇒ page 20 .

– Pull out retaining spring -1- in direction of -arrow-.

– Remove retaining plate -2- in direction of -arrow-.

– Pull out glow plug with flame monitor - Q8- -3-.

Installing

Install in reverse order of removal, observing the following:

Note

♦ Observe installation position of retaining spring -1- and retain‐

ing plate -2-.

♦ Curvature of retaining spring -1- faces up.

2. Auxiliary/supplementary heater

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Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

2.11

Removing and installing temperature

sensor - G18- and overheating sensor -

G189-

Special tools and workshop equipment required

♦ Torque wrench - V.A.G 1410-

Removing

– Remove cover ⇒ page 19 .

– Unclip wiring harness -1- from retainers -arrows-.

– Unscrew bolt -2-.

– Remove retaining spring -1-.

– Pull out temperature sensor - G18- -4- and overheating sensor

- G189- -3- using long-nose pliers.

Installing

Install in reverse order of removal, observing the following:

– Coat seals from temperature sensor - G18- and overheating

sensor - G189- with coolant for installation.

Note

♦ When assembling, ensure proper position of retaining spring

-1-.

♦ Sensors cannot be renewed individually.

Torque settings

♦ ⇒ “2.2 Assembly overview - auxiliary/supplementary heater,

internal”, page 12

22

Rep. gr.82 - Supplementary heating

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

2.12

Removing and installing auxiliary heater

control unit - J364-

The auxiliary heater control unit - J364- is an integral part of the

combustion air blower - V6- and cannot be renewed individually

⇒ Electronic parts catalogue (ETKA) .

2.13

Removing and installing combustion air

blower - V6-

Removing

Dismantling and assembling heater unit ⇒ page 20 .

Installing

Install in reverse order of removal.

2.14

Connector pin assignment for auxiliary/supplementary heater

1 - 6-pin connector

❑ Information on pin as‐

signment can be found

in the latest current flow

diagram ⇒ Current flow

diagrams, Electrical

fault finding and Fitting

locations.

2 - 2-pin connector

❑ Information on pin as‐

signment can be found

in the latest current flow

diagram ⇒ Current flow

diagrams, Electrical

fault finding and Fitting

locations.

3 - 2-pin connector

❑ Information on pin as‐

signment can be found

in the latest current flow

diagram ⇒ Current flow

diagrams, Electrical

fault finding and Fitting

locations.

4 - 4-pin connector

❑ Information on pin as‐

signment can be found

in the latest current flow

diagram ⇒ Current flow

diagrams, Electrical

fault finding and Fitting

locations.

5 - 2-pin connector

❑ Information on pin as‐

signment can be found

in the latest current flow

diagram ⇒ Current flow diagrams, Electrical fault finding and Fitting locations.

2. Auxiliary/supplementary heater

23

Auxiliary/supplementary heater for Your Volkswagen Transporter Van Sixth generation (2015-2021)

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