Removal
1. Relieve the fuel pressure from the fuel line (see "Fuel line - pressure relief"). After releasing the fuel pressure, do not connect the connecting block to the fuel module.
2. Remove accumulated dust and dirt from the fuel module and treat the threaded connections with penetrating lubricant.
3. With an open-end wrench by 17 mm we unscrew the fuel line fittings.
4. We take the tubes away from the module. There are sealing rubber rings on the ends of the tubes. Damaged rings must be replaced.
5. With a socket wrench by 7 mm we unscrew the eight nuts securing the fuel module.
6. Remove the fuel module pressure ring.
7. Carefully remove the fuel module from the tank (at the same time, using a thin slotted screwdriver, we adjust the upper edge of the intake chamber in order to bring it out through the opening of the tank).
Warning! When removing the fuel module, do not bend the fuel level indicator sensor lever. To do this, tilt the module slightly and carefully remove the float from the tank hole.
Note: If it is not possible to remove the fuel module assembly with the intake chamber (a plastic container secured with two rubber bushings to the fuel module cover guides), remove it separately after removing the module.
Assembly
Recommendation: The fuel module must be installed in the tank assembled with the intake chamber.
1. If the module was removed without the intake chamber: use a screwdriver to remove two rubber bushings from the hole in the fuel pump housing lugs.
Note: One of the bushings may remain in the intake chamber opening.
2. After covering the bushing with a thin layer of motor oil, insert it into the opening of the intake chamber.
3. Place the sealing gasket on the module.
4. Insert the fuel pump into the chamber (the bushings must fit into the holes in the fuel pump housing lugs).
5. Using a fine punch, insert the bushings into the holes.
Installation
1. Carefully insert the float into the tank opening, install the fuel module and orient it in the tank so that the arrow points towards the trunk.
Warning! When securing the fuel module, make sure the arrow on the fuel module cover points toward the rear of the vehicle. To avoid damaging the studs, do not overtighten the nuts.
2. Install the pressure ring and evenly (in three or four doses) we tighten the nuts securing the module.
3. Connect the fuel line fittings to the fuel module.
4. Turn on the ignition for 5 seconds and check the tightness of the connections. If necessary, tighten the fittings.
5. Install the hatch cover and lower the rear seat cushion.
(Information copied from the portal: VAZbook.ru)