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| Remove intake hose -1--arrows-. |
The ventilation hose -2- remains attached. |
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| Detach pressure and vacuum hose from combination valve. |
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| Slacken top union nut at connection pipe guided from the secondary air pump to the combination valve. |
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| Unscrew protective cap for inside constant velocity joint from engine. |
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| Unscrew connection pipe from the exhaust manifold. |
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| Unscrew combination valve with joint insert. |
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| Fit the fixing screw through the heat shield from below with an auxiliary tool. |
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| Hold the screw tight from above (the assistance of a 2nd mechanic is required). |
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| Insert 5 mm hexagon socket with joint insert into the screw head. |
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| Position the combination valve from above (the assistance of a 2nd mechanic is required) and tighten the fixing screws to 10 Nm. |
Further installation occurs in reverse order. |
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