What does the reverse clutch do in this Ford transmission?

It connects the input shaft to the reverse clutch drum, which connects to the reverse sun gear. It is applied when the transmission operates in the R position.

Which friction elements are applied in Reverse?

Per the application chart, in Reverse (R) the low-reverse band and the reverse clutch are applied (A).

What parts make up the reverse clutch assembly in the exploded view?

Reverse clutch drum, piston and seals, return spring and retaining ring, pressure ring, front pressure plate, steel plates, friction plates, rear pressure plate, select-fit retaining ring, reverse clutch hub (part of input shaft), and reverse sun gear.

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Ford Automatic Transmission Reverse Clutch Theory - Apply Chart & Exploded View

Theory page with reverse clutch exploded parts diagram and gear apply chart

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Transmission theory page showing reverse clutch exploded parts breakdown with a gear-position clutch-apply chart and cutaway.

AI caption June 2005 · Photo 83 of 116

This page (page 23) from a Ford transmission training/theory manual, in the 'THEORY – Mechanical Components' section, explains the operation of the Reverse Clutch in a Ford automatic transmission. Text explains that the reverse clutch connects the input shaft to the reverse clutch drum, which in turn connects to the reverse sun gear, and that it is applied when the transmission operates in the R position. A clutch/band application chart lists each gear position (Park, Reverse, Neutral, 1st, 2nd, 3rd, 4th, Manual 2nd, Manual 1st) versus the friction elements: overdrive band, low-reverse band, intermediate clutch, reverse clutch (highlighted), forward clutch, direct clutch (drive/coast), intermediate one-way clutch, and low one-way clutch, using the legend A=Applied, X=Applied/Ineffective, H=Holding, OR=Overrunning. A 'Reverse Clutch Apply' summary explains that fluid in the R circuit pushes the piston against return spring force, the piston pushes the clutch plates against a retaining ring, and friction connects the input shaft to the reverse clutch drum. A cross-section illustration and a large exploded-view diagram identify components: piston and seals, return spring and retaining ring, pressure ring, front and rear pressure plates, steel and friction plates, select-fit retaining ring, reverse clutch hub (part of input shaft), reverse sun gear, and reverse clutch drum.

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Frequently asked questions

What does the reverse clutch do in this Ford transmission?: It connects the input shaft to the reverse clutch drum, which connects to the reverse sun gear. It is applied when the transmission operates in the R position.
How does the reverse clutch apply?: Fluid in the R circuit pushes the clutch piston against return spring force; the piston pushes the clutch plates against a retaining ring; the input shaft and the reverse clutch drum are then connected by friction.
Which friction elements are applied in Reverse?: Per the application chart, in Reverse (R) the low-reverse band and the reverse clutch are applied (A).
What parts make up the reverse clutch assembly in the exploded view?: Reverse clutch drum, piston and seals, return spring and retaining ring, pressure ring, front pressure plate, steel plates, friction plates, rear pressure plate, select-fit retaining ring, reverse clutch hub (part of input shaft), and reverse sun gear.
What do the chart codes A, X, H, and OR mean?: A = Applied, X = Applied/Ineffective, H = Holding, OR = Overrunning.