S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Pull guide pin - 3 - outward out of protective cap.
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Remove protective cap from brake caliper.
Installing
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Carefully press guide pin into protective cap as far as first groove.
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Insert protective cap in brake caliper.
The protective cap must be seated in center of brake caliper.
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Press guide pin through protective cap.
The protective cap must not be seated in both grooves on guide pin.
Check movement of the guide pin. Both guide pins must slide.
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Install brake caliper and tighten bolts - 4 - to 30 Nm.