Figure 2-14. High-range torque path. lockup operation.

Figure 2-14. High-range torque path. lockup operation.

b. In reverse range, the reverse-range clutch is

carrier, even though it rotates. The output member

engaged. This holds the reverse-range planetary

of the low-range gear set, connected to the input

ring gear stationary. The reverse-range planetary

member of the reverse-gear set, is the low-range

sun gear is driven (in reverse rotation) by the low-

ring gear. The input member of the reverse-range

range planetary ring gear. The low-range ring gear

gear set is the reverse-range sun gear. The primary

is rotated by the low-range pinions. The low-range

output is the reverse-range planetary carrier. The

pinions are rotated by the low-range sun gear which

prim ary reaction member of the compound system

is splined to the turbine shaft.

is the reverse-range ring gear. The reverse-range

c. This combination of two planetary gear sets to

plan etary carrier transmits torque to the trans-

produce the desired ratio and direction of rotation

mission output shaft to which it is splined.

is called compounding (para 2-5c). Reversing

e. In reverse range, the rear governor. rear oil

pump, and speedometer drive gear are driven in

actually takes place in the low-range planetary gear

reverse direction. Thus they are ineffective; no

set and final speed reduction takes place in the

rear-governor pressure is produced and no oil is

reverse-range planetary gear set.

d. The primary input of the compound system is

pumped by the rear oil pump. The reverse-direction

the low-range sun gear. The reaction member in the

speed reduction ratio between con verter shaft and

low-range gear set is the low-range planetary

transmission output is 4.35 to 1.