Control Valve Body
CONTROL VALVE BODY DISASSEMBLEREMOVAL PROCEDURE
Caution: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
1. Remove the manual valve (340).
2. Remove the forward accumulator cover bolts (364) and the forward accumulator cover (363).
3. Remove the forward accumulator spring (356), forward accumulator piston (354), and the forward accumulator pin (355).
4. Remove the low overrun valve spring (362) and the low overrun valve (361).
5. Remove the coiled spring pin (360) and the bore plug (359).
6. Remove the forward abuse valve spring (358) and the forward abuse valve (357).
7. Remove the solenoid retainer (379) and the 1-2 shift solenoid (367A).
8. Remove the 1-2 shift valve (366) and the 1-2 shift valve Drino (365).
9. Remove the solenoid retainer (379) and the 2-3 shift solenoid (367B).
10. Remove the 2-3 shuttle valve (369) and the 2-3 shift valve (368).
11. Remove the coiled spring pin (360).
12. Remove the 1-2 accumulator valve sleeve (372).
13. Remove the 1-2 accumulator valve (371) and the 1-2 accumulator valve spring (370).
14. Remove the solenoid retainer bolt (364) and the solenoid retainer (378). Remove the pressure control solenoid (377).
Caution: Valve springs can be tightly compressed. Lose care when removing retainers and plugs. Personal injury could result.
15. Compress the actuator feed limit valve spring (375)
16. Remove the bore plug retainer (395) and release the spring slowly.
17. Remove the bore plug (376).
18. Remove the actuator feed limit valve spring (375) and the actuator feed limit valve (374).
19. Remove the solenoid retainer (379) and the 3-2 control solenoid (394).
20. Remove the 3-2 control valve (391) and the 3-2 control valve spring (392).
21. Remove the bore plug retainer (395) and the bore plug (390).
Caution: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
22. Remove the 3-2 downshift valve spring (390) and the 3-2 downshift valve (389).
23. Remove the coiled spring pin (360) and the bore plug (359).
24. Remove the reverse abuse valve spring (388) and the reverse abuse valve (387).
25. Remove the bore plug retainer (395) and the bore plug (381).
Caution: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
26. Remove the 3-4 shift valve spring (386) and the 3-4 shift valve (385).
27. Remove the bore plug retainer (395) and the bore plug (381).
28. Remove the regulator apply valve (380) and the regulator apply spring (390) and the isolator valve (398).
29. Remove the bore plug retainer (395) and the bore plug (381).
30. Remove the 3-4 relay valve (384) and the 4-3 sequence valve (383) and the 4-3 sequence valve spring (382).
CONTROL VALVE BODY ASSEMBLE
INSPECTION PROCEDURE
1. Inspect the valve body to spacer plate gasket for valve body channel witness marks. The witness marks should be complete. Incomplete witness marks may be caused by an uneven case surface. Incomplete witness marks may also be caused by cross-channel leaks.
2. Inspect the valve body casting for the following conditions:
- Porosity
- Cracks
- Damaged machined surfaces
- Chips or debris
CLEANING PROCEDURE
1. Clean all the valves, springs, bushings, and the control valve body in clean solvent.
2. Dry all the parts using compressed air.
CONTROL VALVE BODY ASSEMBLY
Caution: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
Important: Lubricate all parts with Dexron (R)-III automatic transmission fluid before installation.
1. Install the following items:
1.1. The isolator valve (398)
1.2. The regulator apply spring (397)
1.3. The regulator apply valve (380)
1.4. The bore plug (381)
1.5. The bore plug retainer (395)
2. Install the following items:
2.1. The 4-3 sequence valve spring (382)
2.2. The 4-3 sequence valve (383)
2.3. The 3-4 relay valve (384)
2.4. The bore plug (381)
2.5. The bore plug retainer (395)
3. Install the following items:
3.1. The 3-4 shift valve (385)
3.2. The 3-4 shift valve spring (386)
3.3 The bore plug (381)
3.4 The bore plug retainer (395)
4. Install the following items:
4.1. The reverse abuse valve (387)
4.2. The reverse abuse valve spring (388)
4.3. The bore plug (359)
4.4. The coiled spring pin (360)
4.5. The 3-2 downshift valve (389)
4.6. The 3-2 downshift valve spring (390)
4.7. The bore plug (381)
4.8. The bore plug retainer (395)
5. Install the following items:
5.1. The 3-2 control valve spring (392)
5.2. The 3-2 control valve (391)
5.3. The 3-2 control solenoid (394)
5.4. The solenoid retainer (379)
6. Install the following items:
6.1. The actuator feed limit valve (374)
6.2. The actuator feed limit valve spring (375)
6.3. The bore plug (376)
6.4. The bore plug retainer (395)
6.5. The pressure control solenoid (377)
6.6. The solenoid retainer (378)
6.7. The solenoid retainer bolt (364)
7. Install the following items:
7.1. The 1-2 accumulator valve spring (370)
7.2. The 1-2 accumulator valve (371) in the 1-2 accumulator valve sleeve (372)
7.3. The 1-2 accumulator valve and sleeve assembly
7.4. The coiled spring pin (360)
8. Install the following items:
8.1. The 2-3 shift valve (368)
8.2. The 2-3 shuttle valve (369)
8.3. The 2-3 shift solenoid valve (367B)
8.4. The solenoid retainer (379)
9. Install the following items:
9.1. Install the 1-2 shift valve spring (365)
9.2. The 1-2 shift valve (366)
9.3. The 1-2 shift solenoid valve (367A)
9.4. The solenoid valve retainer
10. Install the following items:
10.1. The forward abuse valve (357)
10.2. The forward abuse valve spring (358)
10.3. The bore plug (359)
10.4. The coiled spring pin (360)
10.5. The low overrun valve (361)
10.6. The low overrun valve spring (362)
11. Install the following items:
11.1. The forward accumulator oil seal (353) on the forward accumulator piston (354)
11.2. The forward accumulator pin (355)
11.3. The forward accumulator piston (354)
11.4. The forward accumulator spring (356)
11.5. The forward accumulator cover (363)
11.6. The forward accumulator cover bolts (364)
12. Install the manual valve (340).