Lower Valve Body Disassembly

REMOVE OR DISCONNECT

NOTICE: When disassembling the lower valve body, keep all valve springs, spring seats and plugs with their respective valves. Most valve springs are of different sizes and CANNOT be interchanged. Make sure all parts are Clean and dry before assembly.

1. Bypass valve, bypass valve spring, check ball, valve damping spring, valve body ball and ball valve spring from valve body.

2. Lower valve body plate and gasket from valve body.

3. TCC (lock-up) control valve plate and gasket from valve body.

4. Depressed pressure relief valve retainer, remove pressure relief valve bolt, pressure relief valve retainer, pressure relief valve spring and pressure relief valve ball.
5. One Bolt, TCC (lock-up) solenoid and O-ring from TCC solenoid.

6. Two bolts, shift solenoid assembly, gasket, low coast modulator valve spring, intercoast modulator valve spring and two intermediate coast modulator valves from valve body.

7. Depressing TCC (lock-up) control sleeve. Using a magnet, remove locating pin and then remove TCC (lock-up) control valve spring.

Important
- There are four step positions on the primary regulator valve sleeve. Note the position of the primary regulator valve sleeve for reassembly.

8. Depress primary regulator valve sleeve. Using a magnet, remove primary regulator valve sleeve retainer, primary regulator valve sleeve, primary regulator valve plunger, primary regulator valve spring and primary regulator valve.

CLEAN
- All upper valve body components and dry thoroughly.

INSPECT
1. All valves for cracks, scoring or other damage. Replace as necessary.
2. All valve springs for damage or distortion. Replace as necessary.
3. Lower valve body valve bores for scoring or cracks. Replace as necessary.

MEASURE

^ Tool Required:
- J 26900-5 Vernier Caliper

1. Free length and outer coil diameter of all lower valve body valve springs using a J 26900-5. If spring free length is not as specified in the lower valve body spring table, replace as necessary.