Audi Workshop Service and Repair Manuals

Special tools and workshop equipment required

• ◆ Hose clamps 3094

• ◆ Hose clamp pliers V.A.G 1921
• ◆ Drip tray

Removing

Note:

The following description relates to removal on Audi S3. Certain operations are not required for less powerful engines.

• ‒ → Remove engine cover -arrows- and cover in front of intake manifold.

• ‒ → Screw out bolt -arrow- and remove cover over expansion tank.

• ‒ → If fitted, unplug connector at secondary-air inlet valve -N112 -arrow-.

• ‒ → Unplug connector -arrow- at exhaust gas temperature sender 1 -G235.

• ‒ → Remove air pipe -arrows-.

Note:

Before removing, mark direction of ribbed belt with chalk or felt-tipped pen. Running a used belt in the opposite direction could destroy it.

• ‒ → Swivel tensioner in direction of arrow to slacken off ribbed belt.
• ‒ Detach ribbed belt.

• ‒ → Lock tensioner with mandrel ø4.5 mm, approx. 55 mm long, or using special tool 3090.

• ‒ → Remove centre noise insulation -arrows-.

• ‒ → Detach power steering pipe at cross-piece -arrows-.

• ‒ → Unscrew cross-piece on left...

• ‒ → ...and right from longitudinal members; unscrew both hoses to charge-air cooler.
• ‒ Remove cross-piece.

• ‒ Place drip tray beneath vane pump.
• ‒ → Unscrew pulley -1- of vane pump whilst providing support with mandrel.
• ‒ Use hose clamps 3094 to pinch off both hydraulic pipes to vane pump.

• ‒ → Unplug connector -1- at power-assisted steering pressure switch
  -F88.
• ‒ Detach hydraulic hoses at vane pump.
• ‒ Unscrew vane pump from bracket -arrows-.

Installing

Install in reverse order, paying attention to the following:

Notes:

• ◆ Replacement pumps are supplied without fluid fill. Prior to installation they are therefore to be filled with hydraulic fluid G 002 000 and cranked by hand to avoid the possibility of noise whilst driving or pump damage.
• ◆ Contact surfaces and threads on either side of vane pump must be free from paint.
• ◆ Hydraulic fluid drained off is not to be re-used.
• ◆ Replace sealing rings.

• ‒ → Fit spring clip and suction hose as shown.
• ‒ Longitudinal mark -A- at suction hose must be aligned with seam at pump.
• ‒ Do not fit spring clip beyond transverse mark -B-.
• ‒ Install cross-piece .

Tightening torques