A8 Quattro Sedan V8-4.2L (AUX) (2001)
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The lower spring support has a groove.
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This groove is to be inserted in the lug at the trapezium link.
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Turn end of coil spring until it makes contact with lower spring support.
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Turn upper spring support (not shown) until it makes contact with top end of spring.
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Slacken off spring.