Control Valve Lower Body

DISASSEMBLY





- Remove valves at retainer plate. For removal procedures, refer to Control Valve Upper Body procedures. Control Valve Upper Body

INSPECTION

Valve springs





- Check each valve spring for damage or deformation. Also measure free length and outer diameter.
Inspection standard: Refer to Specifications. Mechanical Specifications

- Replace valve springs if deformed or fatigued.

Control valves
- Check sliding surfaces of control valves, sleeves and plugs for damage.

ASSEMBLY





- Install control valves. For installation procedures, refer to Control Valve Upper Body procedures. Control Valve Upper Body








- Install proper retainer plates.