Control Valve Body Inspection

1. Inspect the control valve body (301) for the following conditions:
^ Worn or damaged oil pump drive shaft bearing journal (not serviceable separately from valve body)
^ Damaged or porous Casting
^ Damaged sealing surfaces
^ Debris in oil passages





2. Use a small pick or screwdriver. Before disassembly, inspect the control valve body components for the following conditions:
^ Binding or sticking valves in their bores or bushings
^ Broken, missing or damaged springs
^ Missing or damaged retainers
^ Damaged solenoid valves
^ Debris in valve line-ups or solenoid valves





3. During disassembly, inspect the control valve body for the following conditions:
^ Worn or damaged valves, valve bores or bushings
^ Broken, missing or damaged springs
^ Missing or damaged retainers
^ Damaged solenoid valves
^ Debris in valve line-ups or solenoid valves





4. During disassembly, inspect the control valve body for the following conditions:
^ Worn or damaged valves, valve bores or bushings
^ Broken, missing or damaged springs
^ Missing or damaged retainers
^ Damaged solenoid valves
^ Debris in valve line-ups or solenoid valves





5. Inspect the fluid pressure manual valve position switch assembly (395) for the following conditions:
^ Damaged electrical connector terminals
^ Damaged Seals
^ Damaged switch membranes
^ Debris on the switch membranes