Forward/Coasting/Direct Clutch Cylinder and Reverse Clutch Drum
FORWARD/COASTING/DIRECT CLUTCH CYLINDER AND REVERSE CLUTCH DRUM DISASSEMBLY/ASSEMBLY
1. Disassemble in the order indicated in the table.
2. Assemble in the reverse order of disassembly.
RETAINING RING (REVERSE CLUTCH HUB) DISASSEMBLY NOTE
- Support the forward/coasting/direct clutch cylinder on a block so that the reverse clutch hub is facing up and the direct clutch hub/shell is not touching the workbench.
RETAINING RING (REVERSE CLUTCH) DISASSEMBLY NOTE
1. Use the SSTs or equivalent to compress the return spring component.
2. Remove the retaining ring.
RETAINING RING (DIRECT CLUTCH) DISASSEMBLY NOTE
1. Use the SST or equivalent to compress the return spring component.
2. Remove the retaining ring.
DIRECT CLUTCH PISTON DISASSEMBLY NOTE
- Remove the direct clutch piston by using external snap-ring pliers as shown in the figure.
RETAINING RING (FORWARD AND COASTING CLUTCH) DISASSEMBLY NOTE
1. Use the SSTs or equivalent to compress the return spring component.
2. Remove the retaining ring.
FORWARD/COASTING/DIRECT CLUTCH CYLINDER AND REVERSE CLUTCH DRUM ASSEMBLY PROCEDURE
1. Install a new inner forward clutch piston seal in the forward/coasting/direct clutch cylinder.
2. Install a new outer seal on the forward clutch piston.
3. Install the forward clutch piston in the forward/coasting/direct clutch cylinder.
4. Lubricate and install the coasting clutch piston in the SST
5. Use the SST or equivalent to install the coasting clutch piston into the forward clutch piston.
6. Install the return spring component.
7. Use the SST or equivalent to compress the return spring component.
8. Install the retaining ring.
9. Remove the SST
10. Install the forward and coasting clutch plates.
11. Install the forward clutch plate retaining ring (selective fit).
12. Use a feeler gauge to measure the clearance between the clutch plates and the forward clutch plate retaining ring. Make a second measurement on the opposite side. Average the two measurements to get the clearance.
13. The standard clearance is 0.50 - 1.09 mm (0.02- 0.04 inch). If the clearance is not within the specification, select and install the proper thickness retaining plate to obtain the standard clearance.
Retaining Ring Sizes:
14. Install the forward/coasting/direct clutch cylinder hub seal ring on the forward/coasting/direct clutch cylinder.
15. Install a new outer seal on the direct clutch piston.
16. Install a new inner piston seal in the forward/coasting/direct clutch cylinder.
17. Lubricate the seals and install the direct piston in the forward/coasting/direct clutch cylinder.
18. Install the return spring component.
19. Use the SSTs or equivalent to compress the return spring component.
20. Use a pair of snap ring pliers to install the retaining ring.
21. Remove the SST.
22. Install the direct clutch plates.
23. Install the direct clutch plate retaining ring (selective fit)
24. Measure the direct clutch clearance as follows:
- Install a dial indicator on the side of the forward/coasting/direct clutch cylinder and zero the needle on the pressure plate.
- Use two picks to pull the pressure plate upward. Observe the dial indicator reading.
- Make a second measurement on the opposite side. Average the two measurements to get the clearance.
Retaining Ring Sizes
25. The standard clearance is 0.52 - 1.12 mm (0.02 - 0.04 inch). If the clearance is not within the specification, select and install the proper thickness retaining ring to obtain the standard clearance.
26. Lubricate and install the reverse clutch piston in the SST or equivalent.
27. Use the SST or equivalent to install the reverse clutch piston with integral seals.
28. Install the return spring component.
29. Use the SSTs or equivalent to compress the return spring component.
30. Use a pair of snap ring pliers to install the retaining ring.
31. Remove the SSTs.
32. Install the reverse clutch plates.
33. Install the reverse clutch plate retaining ring (selective fit).
34. Use a feeler gauge to measure the clearance between the clutch plates and the reverse clutch plate retaining ring. Make a second measurement on the opposite side. Average the two measurements to get the clearance.
35. The standard clearance is 0.33 - 0.89 mm (0.01 - 0.04 inch). If the clearance is not within the specification, select and install the proper thickness retaining ring to obtain the standard clearance.
Retaining Ring Sizes:
CAUTION
- Tabs on direct clutch thrust washers must be seated in return spring component.
36. Install the direct clutch thrust washer on the forward/coasting/direct clutch cylinder with the tabs facing down.
NOTE
- Ensure that the scarf cut seals are overlapped correctly.
37. Install the two reverse clutch seal rings.
38. Support the forward/coasting/direct clutch cylinder on a block so that the direct clutch faces upward.
39. Install the direct clutch hub/shell on the forward/coasting/direct clutch cylinder.
40. Install the reverse clutch drum.
41. Install the reverse clutch hub.
42. Install the reverse clutch hub retaining ring.
43. Flip the assembly over. Use the SST to size the forward/coasting/direct clutch cylinder hub seal. Leave the seal sizer on until the component is installed in the case.
44. Lubricate the pump seal rings (# 1 - # 7) with Automatic Transmission Fluid (ATF).
45. Install the thrust bearing on a pump support.
46. Lower the forward/coasting/direct clutch cylinder and reverse clutch drum component on the oil pump as shown in the figure.
WARNING
- Using compressed air can cause dirt and other particles to fly out, causing injury to the eyes. Wear protective eye wear whenever using compressed air.
47. Apply compressed air 275 kPa (2.8 kgf/cm2, 40 psi) to each clutch passage and listen for a dull thud sound when the clutch applies.
48. If a hissing sound occurs during the check, disassemble and locate the source of the leakage.
49. Lift the cylinder and drum component from the oil pump.