Hydraulic power steering box

Make

Audi

Model

A5

Section

Running gear, front-wheel drive and four-wheel drive › Steering › Hydraulic power steering box

Running gearHydraulic power steering box

Removing and installing hydraulic power steering box (LHD vehicles) Special tools and workshop equipment required

t  Hose clamps up to 25 mm Ø -3094-

t  Torque wrench -V.A.G 1331-

t  Torque wrench -V.A.G 1332-

t  Ball joint puller -T40010 A- t  Engine bung set -VAS 6122- Removing –  Raise vehicle on lifting platform.

–  Clamp off suction hose -1- and return hose -2- using hose clamps -3094-.   Caution l  Hose clamps up to Ø 25 mm  -3094- must not be applied at any point near the non-return valve in the return hose -2-. The non-return valve will otherwise be damaged. l  The non-return valve is located in the return hose -2- between the hose clips -arrows-. –  Remove front wheels.

–  Unscrew nut -1- on joint pin -2- of track rod ball joint until it is flush with end of thread. Counterhold if necessary when loosening. Leave nut screwed on a few turns to protect threads on joint pin.

–  Press track rod ball joint off wheel bearing housing using ball joint puller -T40010 A-. Then remove nut.   Note Make sure the two lever arms of the puller are parallel when maximum force is exerted; adjust as necessary. –  Remove noise insulation → Rep. gr.66.

–  Unscrew nut -3- from rubber mounting -4-.

–  Remove anti-roll bar -1- → Chapter. –  Remove cross brace -4- → Chapter „Removing and installing subframe cross brace (Coupé/Sportback)“. –  Remove cross brace -4- → Chapter „Removing and installing subframe cross brace (Cabriolet)“.   Caution Risk of damage to running gear components. Never place the vehicle on its wheels if the subframe mounting, steering box or subframe cross brace is not correctly installed! The vehicle must not be supported on the subframe or the subframe cross brace (e.g. using a trolley jack or similar)!

–  Remove bolts -4- and detach pressure line -3-. –  Detach return line -2-. If necessary, use a screwdriver to lever return line -2- out of power steering box. –  Seal off connections on power steering box with clean plugs. –  Seal off pressure line -3- and return line -2- with a clean plug.

–  Remove bolt -arrow-. –  Detach steering column -1- from steering box -2-.

Vehicles with 8-cylinder FSI engine: –  Unplug connector -1- and detach from bracket -2-.

All other engines: –  Unplug connector -1- and detach from servotronic solenoid valve -N119--2-.

All engines (continued): –  Unscrew bolts -2- and remove nuts -3-. –  Guide steering box -5- slightly to right and take out. Installing Installation is carried out in the reverse sequence. Note the following points: Tightening torques → Chapter „Exploded view of hydraulic power steering box“

–  Apply a small quantity of hydraulic fluid to seals -1- and -5- before fitting. –  Fully insert pressure line -3- and return line -2- when installing.

–  Install anti-roll bar -1- → Chapter. –  Screw in both bolts -2- loosely at first, then tighten. –  Install cross brace -4- → Chapter „Removing and installing subframe cross brace (Coupé/Sportback)“. –  Install cross brace -4- → Chapter „Removing and installing subframe cross brace (Cabriolet)“.

–  Remove hose clamps -3094- from suction hose -1- and return hose -2-. –  Bring power steering box into centre position → Chapter. –  Bleed steering system → Chapter. –  Check hydraulic fluid level → Chapter. –  Check all opened lines for leaks → Chapter. –  Check and adjust wheel alignment → Chapter.

01 Steering & suspension