Removal and installation a vane pump, vehicles with a 6-cylinder TFSI engine, vehicles without a dynamic steering system (Audi A4 B8)

Removing and installing a vane pump, vehicles with 6-cyl. TFSI engine, vehicles without syst. dynamic steering

Repair work for the vane pump is not provided. If there is a fault, the vane pump should be replaced. The vane pump is supplied unfilled. Therefore, before installation, be sure to fill the hydraulic pump with liquid and turn it by hand. Otherwise, noise may occur during operation or damage to the vane pump may occur.

Place the car on a lift. Remove engine cover "1" upwards. Pump out the hydraulic fluid from the reservoir using a device for collecting and pumping out oil. Clamp the suction hose "1" and return hose "2" with hose clamps "3094". Do not attach hose clamps "3094" for hoses with a diameter of up to 25 mm to the return hose "2" near the check valve. Otherwise, the check valve may be damaged. The non-return valve is located in the return hose "2" between the clamps, "arrows". Remove the noise insulation. Drain the coolant.



Disconnect coolant lines "1" and "2" from the expansion tank. coolant reservoir. Unscrew the "arrow" nuts and remove the expansion joint. coolant reservoir "3" upwards from the fasteners. Unlock from below on the extension. coolant reservoir plug connector "3" and disconnect. Postpone expansion. coolant reservoir "3" to the side.



Disconnect coolant hoses "1" and "2" from the coolant pipe and turn them to the side. Disconnect coolant line "3" from the coolant radiator and turn it to the side.





Remove bolt "1" of the upper coolant pipes. Ignore the "arrow".



Remove bolt "1" of the lower coolant pipes. Ignore the "arrow".



Loosen the poly V-belt and remove it from the vane pump pulley. Rotate the tensioner to loosen the poly V-belt tensioner in the direction of the arrow. Remove the poly V-belt from the vane pump pulley only. Loosen the clamp and remove the tool.





Mark the position of the pulley in relation to the hub. To do this, mark the "arrow." When replacing a vane pump, transfer the marking on the hub from the old pump to the new one. It is impossible to determine the position of the pulley holes relative to the holes in the hub during installation due to limited space.



Remove the "arrow" bolts. Use a 3212 2-hole wrench to hold them in place. Remove the vane pump belt pulley. Place a tray under the vane pump.



If present, carefully cut the cable retainer "1" of the wiring harness "2".





Unscrew bolts "1" and remove pressure line "2" from the vane pump. Close the vane pump and line connections with clean plugs.



Unscrew the vane pump fasteners from the bracket. To do this, unscrew bolts "1" in the front and bolts "2" in the rear. Bolt "2" is not visible in the bracket; it is shown in the figure in the unscrewed position.



Unlock the spring band clamp "arrow" on suction hose "2" on tank "1" and remove suction hose "2" from the tank. Remove the vane pump with the suction hose from the bracket.

Installation

Installation in reverse order. Replace seals and gaskets. rings. Before installing a new vane pump, fill the suction side with hydraulic oil and rotate it by hand until the oil comes out on the discharge side. Secure all hose connections with new clamps. It is not possible to tighten the clamp with hose clamp pliers while the vane pump is installed, so this step must be performed with the pump removed. Before installing the vane pump, attach the suction hose and place it opposite the "P" marking on the molding seam of the vane pump. Secure the suction hose with a new clamp. Pay attention to the installation size of the clamp. The size "a" should be 4 mm.



Insert the vane pump with the suction hose into bracket "3". Sleeve "2" is slightly pushed back.





First, tighten the front bolts "1". Then tighten the rear ones. bolt "2". Tighten bolts "1" and "2".



Press the pressure line "2" into the vane pump until it stops. Then tighten bolts "1".



If installed, secure the wiring harness with a new cable tie "4" to the fitting.



Place hose "2" in the engine compartment without tension or kinks and secure it to the tank. Make sure that the hose is not bent or twisted. Clean oily areas in the motorcycle. compartment. Align the "arrow" marking on the belt pulley with the marking on the hub.





Tighten the belt pulley arrow bolts. Install the poly V-belt of the vane pump. Check the slave level. fluid in the hydraulic system. Remove air from the steering wheel. Check the steering wheel for leaks. Install soundproofing.



Install the poly V-belt and check the alignment of the poly V-belt. When installing a poly V-belt, ensure that it is correctly seated in the pulleys.