Forward Clutch Assembly
Forward (1, 2, 3, 4) Clutch Cutaway View
| Item | Description |
|---|---|
| 1 | Forward (1, 2, 3, 4)/direct (3, 5, R) clutch cylinder |
| 2 | Forward (1, 2, 3, 4) clutch assembly |
| 3 | Front planetary carrier assembly |
| 4 | Forward (1, 2, 3, 4) clutch hub and shaft assembly |
| 5 | No. 3 sun gear |
Forward (1, 2, 3, 4) Clutch Mechanical Operation
The forward (1, 2, 3, 4) clutch connects the front planetary carrier to the rear No. 3 sun gear. The forward (1, 2, 3, 4) clutch is applied in 1st, 2nd, 3rd and 4th gears.
Forward (1, 2, 3, 4) Clutch Exploded View
| Item | Description |
|---|---|
| 1 | Forward (1, 2, 3, 4)/direct (3, 5, R) clutch cylinder |
| 2 | Forward (1, 2, 3, 4) clutch piston |
| 3 | Forward (1, 2, 3, 4) clutch piston return spring |
| 4 | Forward (1, 2, 3, 4) clutch balance piston |
| 5 | Forward (1, 2, 3, 4) clutch wave spring |
| 6 | Forward (1, 2, 3, 4) clutch frictions |
| 7 | Forward (1, 2, 3, 4) clutch steel plates |
| 8 | Forward (1, 2, 3, 4) clutch pressure plate |
| 9 | Front planetary carrier assembly |
| 10 | Forward (1, 2, 3, 4) clutch hub and shaft assembly |
| 11 | No. 3 sun gear |
Forward (1, 2, 3, 4) Clutch Hydraulic Circuits
To apply the forward (1, 2, 3, 4) clutch, the manual valve must be in the NEUTRAL, DRIVE, M, 2 or 1 position to provide line pressure to the forward (1, 2, 3, 4) clutch regulator valve through the D432 and FCPF circuits.
SSA provides regulated pressure from the SF hydraulic circuit to the forward (1, 2, 3, 4) clutch regulator and latch valves through the PC1 and PC1Z hydraulic circuits to position the valves to apply the forward (1, 2, 3, 4) clutch. As the forward (1, 2, 3, 4) clutch regulator valve moves, it opens the FCPF hydraulic circuit to the C1234 circuit to supply regulated line pressure to the forward (1, 2, 3, 4) clutch cylinder. For controlled forward (1, 2, 3, 4) clutch engagement, the forward (1, 2, 3, 4) clutch latch valve directs the regulated line pressure from the C1234 circuit to the opposite side of the forward (1, 2, 3, 4) clutch regulator valve through the C1234FB circuit.
The forward (1, 2, 3, 4) clutch is applied in 1st, 2nd, 3rd and 4th gear.
Forward (1, 2, 3, 4) Clutch Hydraulic Circuit Diagram