Subaru XT 1988 Service Manual page 574

3-2 AUTOMATIC TRANSMISSION AND DIFFERENTIAL
(2) Transfer Oil Pressure Control Device
The transfer valve body is bolted to the side of the extension
case through two gaskets and one separate plate.
Operating oil for the transfer valve body is routed to the
extension case through a pipe connecting the discharge circuit
of the oil pump on
t~e
front of the transmission case to the
rear of the case. It is then delivered to the oil pressure circuit
provided in the plane on which the transfer valve body is
mounted.
This line pressure is reduced to a fixed level by the pilot valve,
and becomes the initial pressure of the duty solenoid C.
Li ne pressure is also del ivered to the transfer control valve,
where it is regulated by duty pressure variations to control the
oil pressure so that optimum rear torque distribution is
obtained according to running conditions.
9
Fig.
85
60
1 Revolution sensor (4WD)
2 Pilot valve pipe
3 Duty sol. C (transfer)
4 Gasket
5 Plate
6 Fi Iter
7 Gasket
8 Roller bearing
9 Extension case
10 Bushing
11 Oil seal
12 Dust seal
L3-662