Control Valve Lower Body

COMPONENTS

DISASSEMBLY




1. Remove valves at parallel pins.
2. Remove valves at retainer plates.
For removal procedures, refer to "DISASSEMBLY" of Control Valve Upper Body, AT-159. ZZZZ

INSPECTION




Valve springs
- Check each valve spring for damage or deformation. Also measure free length and outer diameter.


- Replace valve springs if deformed or fatigued.

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




ASSEMBLY
- Install control valves.