C70 L5-2.4L Turbo VIN 63 B5244T7 (2003)
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Remove backrest upholstery.
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Disconnect the springs from mountings (B) in the backrest frame and lumbar support adjustment mechanism.
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Replace damaged components.
Install:
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In reverse order.
Replacing the lumbar support adjustment knob
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Screw the knob anti-clockwise until stop.
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Continue screwing anti-clockwise and pull out hard.
Install:
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Press the knob on and screw the knob into place.