Main Control Valve Body - Solenoid Body Check
Main Control Valve Body-Solenoid Body CheckDisassembly
1. NOTE: Inspect and test the shift solenoids. GO to Pinpoint Test A.
NOTE: The solenoid body cannot be disassembled to clean and inspect for contamination. Contamination is a major source of solenoid body failure.
Clean and inspect the solenoid body.
- Check the connector pins for corrosion and possible bent condition.
- If large amounts of contamination are present a new solenoid body will need to be installed.
- Remove O-ring and discard.
- Install new O-ring and lubricate with petroleum jelly or equivalent.
Main Control Valve Body-Accumulator Body Check
Disassembly
1. Remove the control valves and springs. Inspect the valves for nicks and burrs. If the valves are damaged the accumulator body will need to be replaced.
2. Inspect all valves, valve sleeves, valve bores for scores, nick or burrs. Check all fluid passages for obstructions. Inspect all mating surfaces for burrs and scores.
3. Inspect all springs for distortion. Check all valves and plungers for free movement in their respective bores. All the components when dry must fall from their own weight in their respective bores.
Assembly
1. Install the control valves and springs.