Component Description: Reverse
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Clutch Application Chart
| Gear | Forward (1, 2, 3, 4) | Direct (3, 5, R) | Intermediate (2, 6) | Low / Reverse (1, R) | Overdrive (4, 5, 6) | Low-OWC |
|---|---|---|---|---|---|---|
| Reverse | D | H | ||||
| Planetary Components | Front planetary carrier-to-No. 3 sun gear | Front carrier-to-No. 2 sun gear | No. 2 sun gear | Rear planetary carrier | Input shaft-to-rear planetary carrier | Rear planetary carrier |
H = Holding
D = Driving
Solenoid Operation Chart
| Selector Lever Position | Commanded Gear | SSA NL (1, 2, 3, 4) | SSB NH (3, 5, R) | SSC NL (2, 6) | SSD NL (1, R) | SSE NH (4, 5, 6) | TCC NL |
|---|---|---|---|---|---|---|---|
| R | R | Off | Off | Off | On | On | Off |
NH = Normally High
NL = Normally Low
Powerflow
In the REVERSE position, SSB is commanded OFF by the PCM/ TCM to apply the direct (3, 5, R) clutch. SSD is commanded ON by the PCM/ TCM to apply the (1, R) clutch. The low/reverse (1, R) clutch is applied to hold the rear planetary carrier and the direct (3, 5, R) clutch is applied to transfer power from the front planetary carrier to the No. 2 sun gear. With the rear carrier held stationary by the low/reverse (1, R) clutch, the input to the No. 2 sun gear causes the rear ring to rotate in the opposite direction at a 3.128 to 1 ratio, providing reverse.