For 1990-2009 cars

### Removal Procedure

#### Tools Required

J 34673 Flat Gage Bar

Important: The upper half of the valve body contains 4 steel check balls. Separate the valve body halves. Position the upper half in order not to displace the 4 check balls. Reassemble the valve body, confirm that you have positioned the check balls in the correct passages. Failure to observe this procedure may result in transaxle shift failure. Remove the valve body halves, keep all valve springs, spring seats, and plugs with the respective valves. Most springs are different in size.DO NOT interchange the springs. Verify that all parts are clean and dry before assembly.

1. Remove the 16 upper valve body bolts.
2. Remove the lower valve body from the upper valve body. Position the upper valve body on the bottom and the lower on the top.
3. Remove the spacer plate and the gasket.
4. Remove the 4 check balls from the upper valve body. Refer to Valve Body and Accumulators
5. Remove the following from the upper valve body:

5.1. | The neutral drain nozzle (19)

5.2. | The manual valve (20)

5.3. | The No. 3 key (2) of the valve body

5.4. | The pressure regulator valve sleeve (1)

5.5. | The primary regulator valve plunger (3)

5.6. | The plate washer (4)

5.7. | The primary regulator valve spring (5)

5.8. | The primary regulator valve (6)

5.9. | Remove the following components:

• | The throttle valve cam bolt (13)

• | The cam (16)

• | The bushing (17)

• | The spring (18)

• | The downshift plug (12)

• | The No. 2 spring (11) of the throttle valve

• | The E-clip retainer (9) from the throttle valve.

• | The throttle valve spring (8)

• | The No. 1 throttle valve (10)

• | Clean all parts with clean solvent, and dry thoroughly.

• | Inspect the upper valve body for damaged valve bores.

• | Inspect the upper valve body for blocked fluid passages.

• | Place J 34673 the across the upper valve body surface.

• | Rotate J 34673 the . Inspect for surface warp every 30 degrees.

• | If the upper valve body warped, replace the upper valve body.

• | Inspect all the valves, the springs, and the attaching parts for damage. Replace the part as necessary.

### Installation Procedure

#### Tools Required

J 36850 Transjel® Transmission Assembly Lubricant

1. Apply a thin coat of J 36850 to all parts prior to assembly.
2. Install the No. 1 throttle valve (10).
3. Install the throttle valve spring (8).
4. Install the E-clip retainer (9).
5. Install the No. 2 spring (11) of the throttle valve.
6. Install the downshift plug (12).
7. Install the following components into the upper valve body:

• | The throttle valve cam bolt (13)

• | The cam (16)

• | The bushing (17)

• | The spring (18)

• | The primary regulator valve (6)

• | The primary regulator valve spring (5)

• | The plate washer (4)

• | The primary regulator valve plunger (3)

• | The pressure regulator valve sleeve (1)

• | The No. 3 key (2) of the valve body

• | The manual valve (20)

• | The neutral drain nozzle (19)

8. Install 4 check balls (2) into the upper valve body.
9. Inspect all of the valves in order to ensure smooth operation.
10. Install the gaskets and the spacer plate.
11. Position the upper valve body with the lower valve body.
12. Install the 16 valve body bolts. Refer to Valve Body and Accumulators
13. Install the valve body assembly to the transmission. Refer to Valve Body and Accumulators