Buick LeSabre 1965 Service Manual page 318

5 - 1 0 4 DESCRIPTION & OPERATION SUPER TURBINE "400"
h. Reverse
When the selector lever is moved
to t h e Reverse position, t h e
manual valve is repositioned to
allow line pressure to enter the
reverse circuit. Reverse oil then
flows to the: (See Figure 5-250).
1. Direct Clutch
2. 2-3 Shift Valve
3. Rear Servo Piston
4. Pressure Boost Valve
Basic Control
Reverse oil from the manual
valve flows to the large area of
the direct clutch piston and to
the 2-3 shift valve. From the
2-3 shift valve, it enters the di-
rect clutch passage and is di-
rected to the small area of the
direct clutch piston to a p p l y
direct clutch.
Reverse oil flows to the rear
servo and acts on the servo pis-
ton to apply t h e rear band.
Reverse oil also acts on the
pressure boost valve to boost line
pressure.
SUMMARY
The direct clutch and the rear
band are applied. The transmis-
sion is in Reverse.