Control Valve Body Spacer Plate: Inspection

1. Inspect control valve body spacer plate for plugged holes, damaged sealing surfaces, or plugged or damaged screen/seal assemblies. Inspect each check ball seat on spacer plate for excessive peening. Place check ball on each seat. Using flashlight, look for visible light between check ball and seat. See Fig 1. If light is visible between check ball and seat, replace spacer plate. For check ball locations, see Figure and Figure .

Fig 1: Checking Spacer Plate For Excessive Peening

Courtesy of GENERAL MOTORS CORP.