Control Valve Lower Body Assemble

Special Tools 

J 36850  Assembly Lubricant (or equivalent)

For equivalent regional tools, refer to Special Tools .

Fig 1: Inspection Areas On Lower Control Valve Body
Courtesy of GENERAL MOTORS COMPANY
1. Inspect the lower control valve body (903) for scratches or debris in the valve bores.
2. Inspect the mating surfaces for damage.
3. Inspect the servo bore for damage.
4. Inspect all fluid passages for debris.
Fig 2: Manual Valve & Link
Courtesy of GENERAL MOTORS COMPANY
5. Attach the manual valve link (913) onto the manual valve (916). Install the manual valve and link assembly into the lower control valve body.
Fig 3: 2-3 Shift Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY
6. Install the following parts:
   1. The 2-3 shift valve spring (906)
   2. The 2-3 shift valve C (907)
   3. The 2-3 shift valve D (908)
   4. The 2-3 shift solenoid valve (910)
   5. The 2-3 shift solenoid valve retainer clip (308)
Fig 4: Solenoid Screen Assembly
Courtesy of GENERAL MOTORS COMPANY
7. Install the solenoid screen assembly (917).
Fig 5: 1-2 Shift Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY
8. Install the following parts:
   1. The 1-2 shift valve spring (918)
   2. The 1-2 shift valve A (919)
   3. The 1-2 shift valve B (920)
   4. The 1-2 shift solenoid valve (909)
   5. The 1-2 shift solenoid valve retainer clip (308)
Fig 6: Locating 3-4 Shift Valve Assembly
Courtesy of GENERAL MOTORS COMPANY
9. Install the following parts:
   1. The 3-4 shift valve spring (911)
   2. The 3-4 shift valve (912)
   3. The bore plug (914)
   4. The bore plug retainer clip (308)
Fig 7: Identifying Ball Check Capsule
Courtesy of GENERAL MOTORS COMPANY
10. Install the following parts:
    1. The ball (979)
    2. The ball check capsule (905)
    3. The spring retainer (904)
Fig 8: View Of Low/Reverse Servo Components
Courtesy of GENERAL MOTORS COMPANY
11. Install the washer (933) and the sleeve (980) onto the servo apply pin (931).
12. Install the servo cushion spring (934) into the low/reverse servo piston (928).
13. Install the servo apply pin (931) into the low/reverse piston (928).
14. Install the retaining ring (902) onto the servo apply pin (931).
15. Place the return spring (901) into the low/reverse servo bore.
16. Place new seals (929, 930) on the low/reverse servo piston (929), and install the low/reverse servo assembly into the servo bore. Attach the retaining ring (932) to the servo apply pin (931).
Fig 9: View Of Checkball Cavities In Lower Control Valve Body
Courtesy of GENERAL MOTORS COMPANY
17. Install the checkballs (#5, #7, #8, #9) into the lower control valve body (903). Retain the checkballs in position with J 36850  assembly lubricant or equivalent.