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Rotary Valve: Disassembly

  1. Remove and discard stub shaft cap "O" ring. Lightly tap end of stub shaft against wood block until shaft cap is free of valve body. Pull stub shaft outward until drive pin hole is visible. See Fig 1 .
    CAUTION: DO NOT  pull shaft more than 1/4" (6 mm) or spool valve may become cocked in valve body.
    Fig 1: Pulling Shaft from Valve Assembly
    G117439Courtesy of GENERAL MOTORS CORP.
  2. Disengage drive pin. Remove stub shaft from valve body and spool assembly with a twisting motion. If binding occurs, realign valve.
    CAUTION: DO NOT  force stub shaft or spool out of valve body.
  3. Remove spool valve from valve body with twisting motion. Remove and discard all "O" rings and Teflon rings.
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