Subaru 1600 Service Manual page 308

AUTOMATIC TRANSMISSION AND DIFFERENTIAL
2. Operation
1) Front Wheel Drive (FWD)
• The line
pre~sure
to the transfer
clutch is disconnected by the trans-
fer valve, and the clutch is kept in
the disconnected state.
• All power is transmitted from the
transmission to the front wheels
through the front hypoid gear.
During operation, both the drive
member and driven member of the
transfer clutch are rotating at the
same speed.
Transfer (4WD)
Torque converter
r - - - - - - - --,
L b
· . Oil pumpl I I
u ncatlOn I
to
r~ar
I
I
-F.~:t---,t-=;r-portlon
I
Oil
cooler
x
Lubrication
to front
portion
(planetary
one-way
clutch)
X :
Drain
(clutches) I
Closed
Pressure X
regulator
valve X
I
LL.;:::=;~
I
I
I
I
I
I
I
I
I
I
I
I
I
Transfer valve
I
L _ _ _ _ _ _ _ J
Manual valve
(line pressure)
..L
T
: Restriction
Fig. 7-10 Hydraulic circuit in FWD mode
Torque converter
Oil pump Transfer clutch Rear drive shaft
Front differential
Front hypoid pinion
Transfer drive shaft Extension shaft
Fig. 7-11 Transmission of power in FWD mode
7-13
A13-405
A13-406