Advertisement

Advertisement

Fuel supply to auxiliary air heater for Your Volkswagen Transporter Van Sixth generation (2015-2021)

Transporter 2020 ➤  
Auxiliary heater - Edition 04.2020  
8
Fuel supply to auxiliary air heater  
⇒ “8.1 Removing and installing metering pump 2 V386 ”,  
page 51  
⇒ “8.2 Checking fuel delivery rate”, page 52  
8.1  
Removing and installing metering pump  
2 - V386-  
Special tools and workshop equipment required  
♦ Engine bung set - VAS 6122-  
♦ Drip tray for workshop hoist - VAS 6208-  
8. Fuel supply to auxiliary air heater  
51  
Transporter 2020 ➤  
Auxiliary heater - Edition 04.2020  
Removing  
– Remove left underbody cladding ⇒ General body repairs, ex‐  
terior; Rep. gr. 66 ; Underbody cladding; Assembly overview  
- underbody cladding .  
– Disconnect electrical connector -2-.  
– Loosen clamps -3-.  
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.  
– Place drip tray - VAS 6208- beneath vehicle.  
– Pull off fuel hoses -4-.  
– Seal fuel hoses -4- with a bung from engine bung set - VAS  
6122- .  
– Remove metering pump 2 - V386- -1- from bracket.  
Installing  
Install in reverse order of removal, observing the following:  
– Replace O-type clips with screw-type clips.  
8.2  
Checking fuel delivery rate  
Special tools and workshop equipment required  
♦ Fuel hose, length approx. 200 mm  
♦ Measuring beaker - V.A.G 1602/1- from injection rate tester -  
V.A.G 1602-  
♦ Vehicle diagnostic tester  
Test requirements  
Resistance of metering pump 2 - V386- = approx. 10 Ω - 10.5 Ω  
Battery voltage: at least 12.5 V  
No fault stored in event memory  
Fuel lines are not damaged or leaking  
Ambient temperature approx. 20°C  
Fuel tank sufficiently filled (fuel gauge on dash panel insert not  
in red area)  
52  
Rep. gr.82 - Supplementary heating  
Transporter 2020 ➤  
Auxiliary heater - Edition 04.2020  
Sequence of operations  
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.  
– Remove clamp -2-.  
– Pull off fuel line -1-.  
– Guide fuel line -1- into measuring beaker - V.A.G 1602/1- .  
– Hold measuring beaker - V.A.G 1602/1- at same height as  
auxiliary air heater.  
– Using ⇒ Vehicle diagnostic tester, check fuel delivery rate of  
metering pump 2 - V386- .  
Note  
If the fuel is delivered evenly (beginning approx. 60 seconds after  
engine has been started), the fuel line is properly filled and ven‐  
ted.  
– Empty fuel from measuring beaker - V.A.G 1602/1- .  
– Guide fuel line -1- into measuring beaker - V.A.G 1602/1- .  
– Hold measuring beaker - V.A.G 1602/1- at height of glow plug  
for heater - Q9- .  
– Using ⇒ Vehicle diagnostic tester, check fuel delivery rate of  
metering pump 2 - V386- .  
– Read quantity of fuel in measuring beaker - V.A.G 1602/1- .  
Min. quantity of fuel after 90 seconds, ml  
18  
Max. quantity of fuel after 90 seconds, ml  
22  
– If fuel delivery rates are not within specifications, renew me‐  
tering pump 2 - V386- ⇒ page 51 .  
8. Fuel supply to auxiliary air heater  
53