Transmission Controls and Valve Body

Control Valve Assembly:

Remove or Disconnect:
1. Raise vehicle
2. Lower the transmission as needed for clearance
3. Remove the oil pan and filter
4. Disconnect wire harness assembly from six hook ups
5. Twenty on 10 mm bolts from valve body assembly, manual detent spring, and roller assembly
6. Six 8 mm bolts from pressure manifold assembly, ensure five O-rings are attached to pressure manifold assembly.
7. Three wiring clips, fluid level indicator stop, one 10 mm bolt, lube pipe, lube pipe retainer and clamp.
8. Control valve assembly including the accumulator housing assembly, valve body gaskets, spacer plate and accumulator gasket. Ensure no gasket material is left on case surface.
9. Eight check balls from case passages
10. PWM (Pulse Width Modulation) solenoid screen

Note: The use of a honing stone, fine sandpaper, or crocus cloth is not recommended for servicing stuck valves. all valve lands have sharply machined corners that are necessary to cleaning the bore. If these corners are rounded, foreign material could wedge between the valve and the bore causing the valve to stick. If it is found necessary to clean a valve, micro fine lapping compound 900 grit or finer should be used.

Too much lapping of the valve will cause excessive clearances and increase the chance of a valve not operating.

Accumulator Housing Assembly:

Clean:
1. Control valve assembly and accumulator housing thoroughly in clean solvent.
2. Air dry

Disassemble Control Valve/Accumulator Housing:
1. Position on a clean surface
2. Remove valve trains and accumulator pistons

Warning: Some valves are under pressure, cover the bores while removing the roll pins or personal injury could result.

4. Remove blind hole roll pins with a modified drill bit
5. Valves, springs, bushings and pistons must be laid out on a clean surface in the exact sequence they are removed.

Clean:
1. All valves, springs, bushings, pistons, control valve body and accumulator housing in clean solvent
2. Dry using compressed air

Inspect:
1. All valves, pistons, and bushings for porosity, scoring, nicks or scratches.
2. Check pistons for seal damage
3. Check springs for damaged or distorted coils
4. Inspect valve body casting a accumulator housing for porosity, cracks, interconnected passages and damaged machined surfaces
5. Solenoid, connectors and switches.

Accumulator Housing Assembly:

Disassemble Accumulator Housing from Valve Body:
1. Six 8 mm bolts
2. Accumulator housing assembly
3. Accumulator housing gasket
4. Spacer Plate
5. Valve Body spacer gasket
6. Accumulator housing to spacer plate gasket

Accumulator Housing Assembly:

Disassemble Accumulator Housing:
1. Torque signal compensator valve and spring
2. Snap ring from outside housing, pin, snap ring, and spring
3. Third clutch piston and spring
4. Seals

Assemble Accumulator Housing:
- Accumulator housing assembly components exactly as shown. Notice positions of the valve and pistons.

Valve Body Assembly:

Assemble Control Valve:
- Control Valve assembly components exactly as shown. Notice positions of the valve lands and bushing passages.

Accumulator Housing Assembly:

Check Ball Location:

Assemble Control Valve and Accumulator Housing:
1. Guide pins into valve body
2. Gasket valve body to spacer plate
3. Spacer plate
4. Gasket accumulator housing to spacer plate
5. Accumulator housing assembly onto valve body assembly
6. Six 8 mm bolts through accumulator housing into valve body assembly
7. Guide pins

Accumulator Housing Assembly:

Check Ball Location:

Wiring Harness Location:

Install or Connect:
1. Eight check balls in proper location into case fluid passages
2. Gasket spacer plate to case
3. Complete valve body assembly onto case
4. Pressure manifold onto valve body assembly. Spring and roller assembly into place.
5. Three wiring clips and fluid indicator stop
6. Twenty-one 10 mm bolts
7. Six 8 mm bolts into Pressure Switch Manifold (PSM) and tighten to 8 Nm (71 in lbs)
8. Attach wiring harness to six connectors. Put large end into case first, pressure switch hook up, solenoid A and B, temperature sensor PWM solenoid and force motor.
9. Lube pipe, long end into case
10. Lube pipe clip with short bolt and tighten to 13 Nm (10 ft lbs)
11. Twenty-one 10 mm bolts and one bolt attaching valve body to case. Tighten bolts to 8 Nm (71 in lbs)
12. The oil pan and filter
13. Raise transmission if it were lowered for clearance
14. Lower the vehicle
15. Fill transmission with fluid