107. Control Valve Body Inspection

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 the control valve body)
^ Damaged or porous casting
^ Damaged sealing surfaces
^ Debris in fluid passages





2. Use a small pick or screwdriver. Before disassembly, inspect the control valve body (301) components for the following conditions:
^ Valves binding or sticking 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. Inspect the transmission fluid pressure (TFP) manual valve position switch assembly (395) for the following conditions:
^ Damaged electrical connector terminals
^ Damaged seals
^ Damaged switch membranes
^ Debris on the switch membranes