SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 671

Converter clutch regulator valve
The converter clutch regulator valve regulates the pres-
sure of the oil which applies the converter clutch. Input oil
from the line 500 circuit is regulated within the valve, with
the output pressure being variable according to the signal
pressure from the S5 circuit. Converter clutch apply and
release application is smoothed by electronically varying
the S5 circuit pressure.
Converter clutch control valve
The converter clutch control valve is a two position valve
which applies or releases the converter clutch.
The switching of this valve is governed by the signal pres-
sure from S7.
When the valve is in the OFF or released position, con-
verter feed oil from the PRV is directed to the release side
of the converter clutch. After flowing through the converter,
oil returns to the converter clutch control valve and is then
directed to the oil cooler.
When the valve is in the ON or applied position, regu-lated
oil from the converter clutch regulator valve is directed to
the apply side of the converter clutch. This oil remains
within the converter because the converter clutch piston
is sealed against the flat friction surface of the converter
cover. To provide oil flow to the cooler the converter clutch
control valve directs converter feed oil from the PRV di-
rectly to the cooler circuit.
BTRA 4 AUTO TRANSMISSION
REXTON SM - 2004.4
Y220_3A2200
B1R exhaust valve
The B1R exhaust valve is a two position spring loaded
valve located in the transmission case directly adjacent to
the front servo. It permits the servo release oil to be rap-
idly exhausted into the transmission case during applica-
tion of the front band (B1). This prevents the need to force
the oil back from the front servo through the valve body
and through the 3-4 shift valve. The spring positions the
valve to prevent oil entering the release area of the servo
until the B1R circuit oil pressure reaches approximately
100 kPa.
Y220_3A2210
POWER TRAIN SYSTEM
The Power Train System consists of;
• A torque converter with single face lock-up clutch
• Four multi-plate clutch assemblies
• Two brake bands
• Two one-way clutches
• Planetary gear set
• Parking mechanism
A conventional six pinion Ravigneaux compound plane-
tary gear set is used with overdrive (fourth gear) being ob-
tained by driving the carrier.
The cross-sectional arrangement is very modular in nature.
Four main sub-assemblies are installed within the case to
complete the build. These subassemblies are;
3A2-15
Y220_3A2220
Y220_3A2240
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