100 Quattro Sedan L5-2309cc 2.3L SOHC (NF) (1989)
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remove molded carpet trunk liner from each side
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remove plastic bushing from hinge plate (arrow)
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install ball pin 3, flat washer 1, and self locking nut 2 to hinge plate
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snap gas filled struts (wide side) onto ball pin
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with trunk lid open, place strut on edge of wheel housing, as shown