Note: Use new duct washers when installing.
Removing
1. Remove the air line hose of the one-way valve.
2. Loosen the bolts of the motor mounting lug bracket, rotate the bracket to the left side.
3. Remove the pipe bracket by unscrewing the three bolts
4. Remove the heat shield by removing the two screws.
5. Now the air duct can be removed by unscrewing the two mounting bolts.
6. If necessary, the one-way valve can now be disconnected.
7. Gently clamp the pipe in a vise with protective jaws. Unscrew the valve from the pipe, clean and inspect it.
Installation
8. Before installation, coat the threads of the one-way valve with sealant (those. Opel №90094714).
9. Use new washers when installing pipe. Coat the pipe mounting bolts with assembly paste (Opel №90513210).
10. Install in reverse order.
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