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14. In case of noted malfunction (e.g., valve will not open/close properly with good air signal), proceed to
dismantle internal blow-off valve.
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Carefully lift and remove poppet (Item 3).
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Remove lock ring (Item 20).
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Pull cover (Item 16) and seal (Item 17).
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Inspect seals (Items 18 & 19) for wear and tear. Replace if necessary.
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Re-assemble blow-off valve in reverse order.
15. Reassemble inlet control valve in reverse order.