Fuel tank with attachments, front-wheel drive (Audi A4 B8)

Fuel tank with attachments, front-wheel drive

Flange cover - tightening torque

Fuel filler neck ground contact

Make sure that there is fluid on the threaded connections "1" and "2" of the fuel filler neck. there is no corrosion on the tank, as this could affect the quality of contact with the body ground. After installation, check the electrical connection using an ohmmeter. contact of the washer on the filler neck with any unpainted area on the body. Set value: approx. 0 Ohm.

Removal and installation of fuel. tank with attachments

Follow the instructions for disconnecting the battery. Drain the fuel tank. tank. Remove the rear bench seat. Unscrew the "arrow" flange cover. Disconnect plug "1" from the flange. If present, disconnect the plug connector "2" of the independent heater metering pump from the flange.





Open the fuel hatch. tank. Clean the area around the fuel filler neck. tank. Remove the "arrow" cap from the fuel filler neck. tank. To avoid fuel contamination. close the filler neck of the tank with a clean piece of foam.



Remove the right rear wheel. Remove the rear right fender liner. Loosen bolts "1" and "2" of the oil supply line. Remove the rear part of the system. exhaust gas release.

Remove the rear axle.



Risk of damage from high-pressure fuel. Disconnect the right front fuel tank. fuel tank line "1" by pressing the release button. If available, disconnect the fuel line to the independent heater and the electrical connector to the metering pump.





Disconnect the left ventilation line "1" from the activated carbon absorber by pressing the release button.



To maintain balance, place the engine and gearbox bracket under the fuel tank. Support the fuel tank. tank with engine and gearbox lift.



Unscrew bolts "1...5" and remove bracket "6" of the exhaust system. Lower the fuel tank. tank using an engine and gearbox lift, holding the fuel. tank with hand.

Installation

Installation in reverse order. Check if the fuel lines are secured to the fuel tank with clamps. baku. Place fuel. tank using tension straps and an engine and gearbox lift on the bottom of the car. When installing the fuel. tank, pay attention to the correct entry of the filler neck into the body opening. Install bracket "5" of the exhaust system and tighten bolts "1...4" of the clamping bands. Make sure that there is fluid on the threaded connections "1" and "2" of the fuel filler neck. there is no corrosion on the tank, as this could affect the quality of contact with the body ground. Tighten bolts "1" and "2" of the fuel filler neck. tank. After installation, check the electrical circuit with an ohmmeter. contact of the washer on the filler neck with any unpainted area on the body. Specified value: approx. 0 Ohm. Install the rear axle. Install the rear part of the system. exhaust. Install the rear right fender liner. Install the rear wheel. Install the flange cover. Install the rear seat. Connect the battery, while observing the measures after connecting the battery.

Fuel delivery module and fuel level sensor

Checking the fuel electrical system. pump

Comply with the verification conditions. Remove the rear bench seat. Unscrew the "arrow" flange cover. Disconnect plug "1" from the flange.



Connect the remote control device for VAG 1348 "VAG 1348/3A" with adapter cable "VAG 1348/3-3" using an auxiliary wire from the auxiliary kit. and measuring instruments "VAG 1594C" to contact "1", 2nd contact of the adapter wire plug "VAG 1348/3-3" tape the "arrow" to prevent short circuiting. Connect contact "5" using an auxiliary wire from the auxiliary kit. and measuring instruments "VAG 1594C" with the body ground. Move the button of the remote control to "VAG 1348/3A" forward into the engine compartment.



Cars up to 05.2008: Unlock the clamps and remove the seal of the water drainage box "2". Ignore "Pos. 1, 3" and "arrow".





Cars from 06.2008: Remove cover "1" by the handle in the upward direction "arrow".

All

Unlock the lock "arrow A" and open the cover "arrow B".



Connect the clamp terminal to the terminal of the external starter current source "116" "pos. A" in the terminal block for the key. 30 "TV22" in a water drainage box. Press the remote control switch. You should hear the pump running. Because it's fuel. the pump operates silently, necessary during fuel check. pump to avoid surrounding noise. If the sound of the pump running is not heard, remove the fuel delivery module. Check the correct connection and continuity of the wires between the flange and the fuel pump. If no damage to the wires is found, replace the fuel delivery module. Install the fuel delivery module.

Removal and installation the fuel control unit. pump "J538"

So that when disconnecting the fuel control unit. do not allow a large amount of fuel to leak from the J538 pump. The fuel tank should be filled no more than 1/4 full. If necessary, pump out the fuel from the fuel tank. tank. If necessary, move the front passenger seat as far forward as possible. Disconnect the battery. Remove the rear bench seat. Unscrew the "arrow" flange cover. Disconnect plug "1" from the flange. If present, disconnect the plug connector "2" of the independent heater metering pump from the flange.



Disconnect the fuel. line "2" from the flange by pressing the release button. If present, disconnect the fuel at the flange. line "1" from the independent heater metering pump by pressing the release button.



To prevent a large amount of fuel from leaking when removing the flange, the fuel tank should be no more than 1/4 full. Loosen the union nut with a T40068 A "arrow" union nut wrench. When loosening the union nut, the plastic retainer on the threaded ring will break off; ignore this.



Cover the fuel hole. tank with clean cardboard "1" to avoid contamination. Unscrew the arrow bolts.



Remove the fuel control unit. tank "J538" pos. 1-, located between the fuel tank and the bottom of the car. Disconnect the plug connector and remove the fuel control unit. pump.

Installation

Installation in reverse order. Replace the sealing cuff and union nut. Install the fuel control unit. pump "J538" in the mounting position and tighten the bolts. Insert your left hand into union nut "1" and, using the same hand, firmly install flange "2" into the "arrow" mounting position. Cover plate "4" on the blind flange should be positioned between tongues "3" and "5" on the threaded ring.



Insert the union nut "1" into the left hand, holding the nut with the right hand, and press firmly on the flange "2" with the left hand "arrow". With the right hand, place the union nut "1" in such a way that the double rib "5" of the ribbing is above the flange overlay "3" (approx. "in the 10 o'clock position"). Then the union nut will enter the threaded nipple "4" more easily.



Press firmly on the flange downwards "arrow". With the right hand, turn the union nut 480° so that the double rib "1" is in the "2 o'clock position", while pressing firmly on the flange downwards with the left hand.



Danger of leakage of threaded flange connection. When tightening the union nut, apply firm pressure to the flange to prevent it from turning. Tighten the flange union nut with the T40068 A union nut wrench.



Check: Double jumper "1" should be in the "position between 7 and 8 o'clock".



Connect fuel. highways "1" and "2". Connect the plug connectors. Install the flange cover. Install the rear seat.



Connect the battery, observing the precautions after connecting the battery. Vehicles with independent heating: bleed the fuel supply. highways.

Removal and installation the fuel delivery module

If necessary, pump out fuel from the fuel tank. tank. If necessary, move the front passenger seat as far forward as possible. Follow the instructions for disconnecting the battery. Remove the rear bench seat. Unscrew the "arrow" flange cover. Disconnect plug "1" from the flange. If present, disconnect the plug connector "2" of the independent heater metering pump from the flange and place it aside.



To relieve pressure in the fuel. place a clean cloth around the connector and carefully loosen the connection. Disconnect the fuel. line "2" from the flange by pressing the release button. Disconnect the fuel. line "1" from the independent heater metering pump by pressing the release button.



Loosen the union nut with the T40068 A "arrow" union nut wrench. When loosening the union nut, the plastic clip on the threaded ring will break off. Ignore this.



Remove flange "2" with fuel filter from fuel. tank and tilt it slightly toward the left side of the vehicle. Remove gasket "1". Do not completely remove the flange with the fuel filter from the fuel delivery module "arrow A". At the same time, remove the flange with the fuel filter from the fuel. tank "arrows B", while monitoring the correct position of the mounting plate with the ground connection "3" and the position of the fuel. highway "4".



Do not completely remove the flange "2" from the fuel filter on the fuel delivery module "1" "arrow A". Tilt the fuel delivery module to the left side of the vehicle "arrow B" and do not completely remove it from the fuel. tank. When removing the fuel delivery module, make sure that the float of the fuel level sensor "G" does not bend. Remove the fuel level sensor "G" "pos. 3" from the fuel hole. tank and remove the fuel supply module with the suction line from the fuel. tank.

Installation

Installation in reverse order. Replace the sealing cuff and union nut. When installing the fuel delivery module, make sure that the fuel level sensor float "G" is not bent. Ensure that the fuel is seated tightly. highways. Make sure that the ground wire "arrow" is securely fastened to the fuel pressure regulator mounting plate.



Bend down the suction line "3" located on the fuel supply module "2" "arrow A". First insert the suction line into the fuel. tank "arrow B". Then insert float "1" of fuel level sensor "G" into the fuel tank.



Do not completely remove the flange "2" from the fuel filter on the fuel delivery module "1" "arrow A". Tilt the fuel delivery module to the left side of the vehicle and insert it into the fuel. tank "arrow B", while monitoring the correct position of the fuel level sensor "3".



Do not completely remove flange "2" with the fuel filter from the fuel delivery module "arrow A". At the same time, insert the flange with the fuel filter into the fuel. tank "arrows B", while monitoring the correct position of the mounting plate with the ground connection "3" and the position of the fuel. line "4". Install the new sealing cuff "1" over the flange and insert it into the groove on the fuel. tank.



Insert your left hand into union nut "1" and, using the same hand, firmly install flange "2" into the "arrow" mounting position. Cover plate "4" on the blind flange should be positioned between tongues "3" and "5" on the threaded ring.



Insert the union nut "1" into the left hand, holding the nut with the right hand, and press firmly on the flange "2" with the left hand "arrow". With the right hand, place the union nut "1" in such a way that the double rib "5" of the ribbing is above the flange overlay "3" (approx. "in the 10 o'clock position"). Then the union nut will enter the threaded nipple "4" more easily.



Press firmly on the flange downwards "arrow". With the right hand, turn the union nut 480° so that the double rib "1" is in the "2 o'clock position", while pressing firmly on the flange downwards with the left hand.



Danger of leakage of threaded flange connection. When tightening the union nut, apply firm pressure to the flange to prevent it from turning. Tighten the flange union nut with the T40068 A union nut wrench.



Check: Double jumper "1" should be in the "position between 7 and 8 o'clock".



Connect fuel. highways "1" and "2".



Connect the plug connectors. Install the flange cover. Install the rear seat. Connect the battery, observing the precautions after connecting the battery. After installing the fuel injection unit, add at least 5 liters of fuel to the car. Cars with independent heater: pumping the fuel supply. highways.

Removal and installation the fuel level sensor "G"

When reassembling, install the cable tie in the place where it was originally installed. Removing the fuel supply unit. Disconnect connector "4" by pressing the "arrow" latch. Cut cable tie "2" and release the plug connector. Unlock clamps "1" and "3" and remove fuel level sensor "G" upwards.

Installation

Installation in reverse order. Insert the fuel level sensor "G" into the fuel delivery module guides and press down until it clicks into place. Connect the connectors and check that they are securely fastened. Install the fuel supply module, while following the instructions for connecting the battery.