KICKDOWN BAND
PLANET CARRIERS
DIRECT
REVERSE BAND
CLUTCH
APPLIED
OUTPUT SHAFT
INPUT SHAFT
REVERSE SUN GEAR
KICKDOWN SUN GEAR
KICKDOWN RING GEAR
POWER FLOW IN DIRECT DRIVE
KICKDOWN
REVERSE
(LOW)
SERVO
CLUTCH
SERVO
APPLY
PRESSURE
RELEASE
THROTTLE
PRESSURE
VALVE
KICKDOWN
KICKDOWN
CHAMBER
SHIFT
VALVE
VALVE
LINKAGE
MANUAL
VALVE
LDNR
CONVERTER
T.C.
CONTROL
VALVE
SECONDARY
REACTION
COOLER
AREA
GOV.
VALVE
PRIMARY
REACTION
WEIGHT
AREA
VENT
TO
LUB
REAR PUMP
FRONT PUMP
ASf02075
OIL FILTER
Figure 2-75.--Drive (D) operating range.
more working oil pressure must be applied to the
oil passage directing oil to the smaller (or secondary)
small land to cause the valve to operate. Therefore, a
reaction area of the regulator valve is opened.
greater pump pressure is required and produced to
As shown in figure 2-77, the oil passage to the
move the regulator valve against the valve spring.
primary reaction area of the regulator is closed off.
The regulated oil pressure in the reverse range is
With this condition, and having oil from the pump
usually between 200 and 300 psi. This increased oil
pressure is directed to the reverse servo unit; all
directed to the small land area of the regulator valve,
2-59
