Copyright by Goodheart-Willcox Co., Inc.
Chapter 9 Automatic Transmission Control Components 191
14
15
16
17
18
19
20
21
22
23
24
25
28
29
4
1
2
3
4
5
6
7
9
10
11
12
13
1. Oil strainer
2. Gasket
3. Valve body
4. Check ball
5. Gasket
6. Transfer plate
7. Gasket
9. Accumulator piston
10. Spring
11. Oil ring
12. Accumulator
13. Retaining ring
14. Spring
15. Servo apply rod
16. Servo adjusting sleeve
17. Spring retainer
18. Spring
19. Oil ring
20. Servo piston
21. Retaining ring
22. Adjusting bolt
23. Locknut
24. Retaining ring
25. Gasket
28. Servo cover
29. Reinforcement plate
Figure 9-5. Valve bodies contain many of the hydraulic valves found in an automatic transmission. The valve body shown here is a
one-piece design. Note the position of the spacer plate and gaskets in the assembly. Also note the accumulator and band servo
incorporated into this valve body and the position of oil filter (strainer). (Fiat)
Control
valve
assembly
1-2 Accumulator
piston
Spacer plate
gaskets
3-4 Accumulator
piston
Case assembly
Spacer plate
Figure 9-6. This illustration shows the relative positions of the spacer plate, valve body, and transmission case. Almost all spacer plates have
a gasket on each side. Many transmissions have two-piece valve bodies, with a spacer plate between the two halves. (General Motors)