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Control Valve Assembly: Disassembly

  1. Position control valve assembly with gasket surface up and accumulator pocket at bottom. Remove manual valve from upper bore. Install Compressor (J-21885) on accumulator piston. Compress piston and remove "E" retaining ring. Remove piston and spring.
  2. Remove retaining pins (except grooved pin in lower left bore) from bores with pin punch. Drive pins from outer side of valve body. When removing pins, hold hand over bore end in case spring forces components out of bore. See Fig 1 and Fig 2 . Remove grooved pin from lower left bore with long nose pliers. Remove valve trains beginning with upper left corner.
Fig 1: Control Valve Assembly Removal
G96C15976Courtesy of GENERAL MOTORS CORP.
Fig 2: Exploded View of Control Valve Assembly
G96D15977Courtesy of GENERAL MOTORS CORP.