Caslte 777 Air Vent Bellows Installation Instuctions







How To Replace The Castle 777 Air Vent Bellows Assembly



Removing The Old Bellows
  1. Remove The Liner From The Chamber


    2. A. Older Models: Remove the four (4) hex head screws from the back of the shell to release the liner

    B. Newer Models: Remove the 6-32 Screw from the inside of the liner that secures it to the back of the chamber. Then carefully remove the liner from the retaining guide, extending down from the shell in the rear of the chamber

  2. Remove The Old Bellows assembly from the liner



Castle 777


Installing The New Bellows
  1. Remove the nut from the stem of the new bellows assembly
  2. Screw the new bellows assembly stem completely into the liner from the outside, and hand tighten the nut on the inside
  3. Replace The Chamber Liner


    4. A. Older Models: Be Sure to place the four (4) special washers under the heads of the four (4) hex head screws

        Caution: Tighten the four (4) screws snugly so that no leakage occurs around the washers. Overtightening the screws will strip the threads

    B. Newer Models: Place the liner in the chamber so that the retaining guide, extending down from the top of the chamber,
    enters the slot in the liner. Replace the 6-32 screw tha holds the liner in place


Click Here For The Bellows Adjustment Procedures

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