Service Manual, Inogen One G3HF
2. Remove the Exhaust tube from the Tube Bracket and Muffler. Then unclip the Column
tube from the Inlet Union Barb (Figure 6).
Figure 6: Exhaust Tube and Column Tube
3. Locate the column tube attached to the Product Manifold. Release the Column B Tube
from its quick connect by pushing down on the retaining ring while pulling on the tubing.
(Figure 7).
Figure 7: Exhaust Tube and Column Tube
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