Audi 243 - Key System Components Detailed; Air Springs and Suspension Struts

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The air springs
The front air spring is a new design.
As on the rear axle, the air springs are combined
coaxially with the dampers as a suspension strut.
The rear air springs are identical in design and
function to those of the Audi A6 with self-levelling.
Design
While in the case of the rear suspension strut, the
connection/seal from the air spring (piston) to the
damper is made via a double-seal bayonet
connection, on the front suspension strut it takes the
form of a single-seal N17 connector.
The differences in design require a different
assembly.
Front suspension strut
The assembly of the front air spring with the damper
is carried out without lubrication. The N17 connector
and the O ring must be absolutely dry and free from
grease.
Before assembly of the air spring, the O-ring
is placed onto the second shoulder of the damper,
ensuring an even perimeter. The air spring (piston) is
positioned onto the damper and pushed together
with adequate force. The O-ring is forced onto
shoulder 3 by the movement of the piston, where it
supports and seals the air spring.
System components
243_004
Installation
O-ring
O-ring
Air connection