Chevrolet 12648746 Tube Assembly, Pcv (Fresh Air)

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On all models, the system includes a fresh air hose(s) and a dirty air hose, with either PCV valve or fixed orifice fitted in the dirty air hose. For V6 engine, EAC hosing is fixed to the rear of each valve cover, for V8 engine, clean air hose is fixed to the rear of left valve cover and front of right valve cover by joining with a fitting connected to air intake duct, other end of EAC hose connected to the front of intake manifold or supercharger and one fitting on the lifter valley cover, dirty air hose connected with other end of EAC hose Loose and disengage the components that have unfastened at the top of the car Remove the engine covers. In V6 engines the PCV hose is disconnected from the connection point and are reconnected in the same way as removal. Disconnect the clean air PCV hose connections from the valve covers and air intake duct and, if used, sliding the hose through the harness and charge air cooler lines if used, reconnect the hose by reversing the presented steps of removal. For the dirty air PCV hose, release the clip of the tube from the intake manifold and dismantling of the hose that are on the lifter valley cover; on the supercharged models, it is necessary to disconnect the supercharger bypass valve actuator for the hose access, and after then to connect it back in the reverse sequence.