Stub Shaft
The stub shaft transfers power from the turbine shaft to the planet carrier (through the direct clutch) during third and fourth gear operation.
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Apply Components
There are eight apply devices used to drive or hold the planetary gearset members. The following is a description of each apply component.
Band--Overdrive
The overdrive band holds the reverse clutch drum stationary in fourth gear and in manual range second gear. This action causes the reverse sun gear to be held in these ranges.
Band--Low and Reverse
The low and reverse band holds the pinion carrier stationary in reverse. It is also applied in first gear, manual 1 range, to provide engine braking.
Clutch--Forward
The forward clutch couples the input shaft to the forward sun gear in first, second and third gears.
Clutch--Direct
The direct clutch couples the input shaft to the planet carrier (through the stub shaft) in third and fourth gears.
Clutch--Reverse
The reverse clutch couples the input shaft to the reverse sun gear. It is applied in reverse range only.
Clutch--Intermediate
The intermediate clutch works with the intermediate one-way clutch to hold the reverse sun gear stationary in second gear. The intermediate clutch remains applied in third and fourth gears, but does not transmit power.
Clutch--Intermediate One-Way
The intermediate one-way clutch is a roller clutch that works with the intermediate friction clutch to hold the reverse sun gear stationary in second gear during acceleration. This one-way clutch freewheels in third gear and during coasting in second gear, (D) and D ranges.
Clutch--Planetary (Low) One-Way
The planetary (low) one-way clutch is a roller clutch that holds the pinion carrier stationary in first gear, ((D) and D ranges), during automatic coasting downshifts into first gear ((D) and D ranges), it freewheels so that there is no engine braking.
