Power Flow - Reverse - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

Power flow - Reverse

In Reverse, transmission drive is via the input shaft and
the forward clutch cylinder to the hub of the C3 clutch.
The elements of the transmission function as follows;
• The C3 clutch is engaged and drives the reverse sun
gear in a clock-wise direction.
• The B2 band is engaged and holds the planetary gear
carrier stationary causing the long pinion to rotate anti-
clockwise about its axis on the pinion shaft.
• The long pinion drives the internal ring gear in the same
direction.
• The internal ring being splined to the output shaft drives
it in an anti-clockwise or reverse direction.
Gear State
Reverse
BTRA 4 AUTO TRANSMISSION
REXTON SM - 2004.4
C1 C2 C3
- - X
Control
To maintain this arrangement in the steady state sole-
noids and valves are activated as follows;
• Solenoids S1 and S2 are switched OFF.
• Line pressure is directed through the reverse lockout
valve to both the inner and outer apply areas of the
rear servo piston for B2 band application.
• Line pressure feeds the reverse oil circuit via the manual
valve.
• Reverse oil is routed from the manual valve to the C3
clutch.
• Reverse oil is also applied to the spring end of the
primary regulator valve to assist the spring and to boost
the line pressure value.
• All other clutch and band apply circuits are open to
exhaust.
ELEMENTS ENGAGED
C4 B1 B2
- - X
3A2-23
1-2 3-4 LU
OWC OWC CLUTCH
- - -
Y220_3A2340
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN