Subaru XT 1988 Service Manual page 582

3-2
AUTOMATIC TRANSMISSION AND DIFFERENTIAL
2)
FI RST SPEED OF 0 OR 3 RANGE
(0,,3,)
• When the throttle is open wide, as during acceleration in
the low-speed range, the forward clutch, one-way clutch
(3-4) and one-way clutch (1-2) operate to prevent the rear
internal gear from turning in the reverse direction.
• While coasting, the rear internal gear turns normally and
the one-way clutch (3-4) is released and idles. Therefore,
no power is transmitted and the engine does not provide
braking action.
•
•
•
Operating condition of parts Power flow (in acceleration)
Forward clutch Applied
•
Input shaft
One-way clutch (3-4) Operating
+
•
Rear sun gear
One-way clutch (1-2)
Operating ~
•
Rear pinion gear
~
•
Rear planetary carrier
,
•
Reduction gear
I
~
,
•
Drive pinion
•
Transfer clutch
+
J
•
Front differential
•
Rear differential
Front planetary gear Rear planetary gear Only counterclock-
I nput
Shaft~,
Front differential
- wise rotation is locked
One-way clutch (3-4) One-way clutch (1-2)
B"-=--
~
Note: _ Locked
~
C Dlnput
r
Power flow: : Power flow: _ Output
, :A-+B 'B-+C
, - - - - - - - - - , r
r-------'
~-------- --------l
r
~
r
I
Rear internal gear lOne-way clutch (3-4)
Rear planetary gear
: f
One-way clutch (1-2)
I Transfer clutch
I
I
I
I
-
Reduction gear
Fig. 92
66
L3-672