Removing And Installing Burner Unit; Removing And Installing Glow Plug For Heater Q9 - Volkswagen Transporter 2020 Manual

7.9

Removing and installing burner unit

Special tools and workshop equipment required
♦ Torque wrench - V.A.G 1410A-
Removing
– Remove combustion air blower 2 - V385-
– Unscrew bolts -2-.
Note
Combustion chamber -1- is removed along with glow plug for
heater - Q9- and fuel pipe.
– Pull out combustion chamber -1-.
Installing
Install in reverse order of removal, observing the following:
– Renew seal between combustion chamber -1- and heat ex‐
changer.
Note
When reassembling, use the rubber grommets for the wiring har‐
ness of the glow plug for heater - Q9- and fuel pipe as a guide.
– Insert combustion chamber -1-.
– Screw in bolts -2- loosely.
– Tighten bolts -2- alternately in diagonal sequence to specified
torque.
Specified torques
Component
Bolts -2-
7.10 Removing and installing glow plug for
heater - Q9-
Note
Glow plug with flame monitor - Q9- is activated immediately
♦
after activation and switched off again about 1 minute after a
flame has been detected.
♦ The maximum glow period for the auxiliary air heater is 150
seconds.
When heater unit is switched off, glow plug with flame monitor
♦
- Q9- is switched back on again during the 4 minute run-on
time to burn off all fuel.
It is essential to check the mantle for carbonised deposits and
♦
damage if glow plug with flame monitor - Q9- is renewed.
Removing
– Remove auxiliary air heater
⇒ page 47
Specified torque
6.5 Nm
⇒ page 36 .
Auxiliary heater - Edition 04.2020
.
Transporter 2020 ➤
7. Auxiliary air heater
45