B Clutch
Overview
| Item | Description |
|---|---|
| 1 | SSB |
| 2 | B clutch control valve |
| 3 | B clutch latch valve |
| 4 | B clutch apply circuit |
| 5 | B clutch piston |
| 6 | B clutch assembly |
| 7 | One-Way Clutch (OWC) |
| 8 | Sun gear No. 1 |
| 9 | Sun gear No. 2 |
Sun gear No. 1 is mechanically connected to sun gear No. 2. Sun gear No. 1 is also connected to the B clutch. When the B clutch applies, it holds the sun gear No. 1 and sun gear No. 2 stationary. The One Way Clutch (OWC) also holds the sun gear No. 1 and sun gear No. 2 stationary during acceleration in first and second gear when the shifter is in the D position.
B Clutch Exploded View
| Item | Description |
|---|---|
| 1 | Front support assembly |
| 2 | B clutch piston |
| 3 | B clutch apply plate |
| 4 | B clutch friction plates |
| 5 | B clutch separating springs |
| 6 | B clutch steel plates |
| 7 | B clutch pressure plate |
| 8 | One-Way Clutch (OWC) |
| 9 | Sun gear No. 1 |
| 10 | Sun gear No. 2 |
B Clutch Hydraulic Circuits
| Item | Description |
|---|---|
| 1 | Line pressure |
| 2 | Pump output |
| 3 | B clutch control valve |
| 4 | SSB |
| 5 | Control pressure to latch valve |
| 6 | B clutch latch valve |
| 7 | Apply pressure to mechanical B clutch |
| 8 | Mechanical B clutch |
| 9 | Elevated exhaust pressure |
| 10 | Clutch exhaust |
B Clutch Hydraulic Operation
Line pressure is supplied to the B clutch control valve and the B clutch latch valve. As SSB turns on, it moves the control valve allowing regulated line pressure to flow to the B clutch latch valve and then to the mechanical B clutch. When the regulated line pressure in the B clutch control circuit reaches approximately 689 kPa (100 psi), the mechanical B clutch is fully applied. The pressure in the B clutch control circuit moves the B clutch latch valve to the left which allows line pressure to hold the mechanical B clutch applied.
B Clutch Hydraulic Passages