Subaru XT 1988 Service Manual page 603

3-2
AUTOMATIC TRANSMISSION AND DIFFERENTIAL
[Z]
Parking Mechanism
The end of the parking pawl engages mechanically with the
gear groove of the parking gear. This gear is spline-fitted to
the drive pinion shaft.
When the select lever is set to "P", the manual lever connected
to the manual shaft turns, moving the parking rod backward.
A cam and spring are installed on the rear of the parking rod.
The parking cam slides freely on the parking rod. The parking
rod and cam contact the "V" groove of the actuator (secured
to the transmission case) and the back of the parking pawl.
Reduction driven gear
With this arrangement, when the parking rod moves backward,
the cam moves to the back of the parking pawl and the "V"
groove of the actuator. The parking pawl turns in the direction
of the parking gear using the parking pawl shaft as a pivot. It
then engages with the parking gear groove.
If the end of the parking pawl rides over the tooth of the
parking gear so that the parking cam does not move midway
between the pawl and actuator, the parking rod will move to
"P". This compresses the parking spring so that the parking
cam is ready to move to "P". Under this condition, if the
vehicle moves slightly, the parking gear will rotate to engage
the pawl completely.
Except for the P range, the parking pawl is tensed by the
parking pawl return spring in the direction that moves away
from the parking gear.
Parking actuator
Parking rod
Parking pawl
Parking rod
Parking spring
Parking rod
Fig. 101
76
Parking pawl
return spring
."--+-.L- _ _ _ _
ViewY
Parking cam
(slides on parking rod)