Overview - Air Suspension Strut

Fig 1: Exploded View Of Air Suspension Strut

Courtesy of AUDI

1. Air Spring Damper
   • With the Left Front Damping Adjustment Valve -N336- /Right Front Damping Adjustment Valve -N337-
   • If the damping adjustment valve is faulty, replace the entire air spring
2. Cap
   • Installation position. Refer to Fig 3.
3. Bracket
   • For the air line
   • Quantity: 2
   • Installation position. Refer to Fig 4.
4. Clamp
   • Always replace after removing
   • Installation position. Refer to Fig 5.
   • Tensioning. Refer to Fig 7.
5. Boot
   • Must not have any pressure marks; correct any pressure marks by hand.
   • Push upward over the collars on the suspension strut housing
   • Replacing. Refer to BOOT, REPLACING .
   • Installation position. Refer to Fig 6.
6. Clamp
   • Always replace after removing
   • Installation position. Refer to Fig 5.
   • Tensioning. Refer to Fig 7.

Air Spring Suspension Strut Installation Position

Fig 2: Air Spring Suspension Strut Installation Position

Courtesy of AUDI

• The cap positioning pin -1- must engage in the hole -2- in the suspension strut tower -arrow-.

Air Spring Cap Installation Position

Fig 3: Air Spring Cap Installation Position

Courtesy of AUDI

• The suspension strut positioning pin -1- must engage in the cap -2- -arrow-.

-- Push in the cap until it engages audibly.

Air Line Bracket Installation Position

Fig 4: Air Line Bracket Installation Position

Courtesy of AUDI

• Position the bracket -1- over the pointed protrusion -arrow- on the clamp -2 - as shown.

Clamp Installation Position

Fig 5: Clamp Installation Position

Courtesy of AUDI

• The clamping ears -arrows- of the clamps -1 and 2- must align with the residual pressure valve -3- as shown.

Boot Installation Position

Fig 6: Boot Installation Position

Courtesy of AUDI

-- Push the boot -1- upward over the collars on the suspension strut housing -2-.

-- Note the lower dimension -a-.

• Dimension -a- = 96 mm.

Tension the Clamp on the Air Spring

Fig 7: Tension the Clamp Using the : VAG1682A.

Courtesy of AUDI

-- Before tensioning the clamp, check their installation position. Refer to Fig 4 and Refer to Fig 5.

-- To tension the lower clamp, turn the front wheels accordingly

-- To tension the upper clamp, lift the wheel bearing to the standard vehicle height. Refer to WHEEL BEARING AT STANDARD VEHICLE HEIGHT, LIFTING VEHICLES WITH AIR SUSPENSION .

-- Attach the Clamping Pliers:V.A.G 1682  as shown. While doing so, make sure the jaws on the pliers are centered -arrow- on the clamping sleeve -2-.

TIP:

• Make sure the threads on the spindle on the pliers move easily. Lubricate with MoS₂ grease, if necessary.
• If difficult to tighten, for example because of dirty threads, the proper clamping force of the clamping sleeve will not be reached even when tightened to the specification.

-- Tighten the lock washer with the torque wrench by turning the spindle -1-. Do not tilt the pliers while doing this.

• Tightening specification: 8 Nm.