Jeep Grand Cherokee WK. Manual — part 1497

Torque Converter Lockup Clutch Regulating Valve

The torque converter lock-up clutch regulating valve (6) is located in the valve housing of the electrohydraulic con-
trol module. The valve is responsible for the hydraulic control of the torque converter lockup clutch and distribution
of the lubricating oil.

1 - TORQUE CONVERTER LOCK-UP CLUTCH
2 - TORQUE CONVERTER OUTPUT
3 - TORQUE CONVERTER INPUT
4 - LUBRICATION
5 - TORQUE CONVERTER LOCK-UP SOLENOID
6 - TORQUE CONVERTER LOCK-UP CLUTCH REGULATING VALVE
7 - OIL COOLER
8 - LINE PRESSURE REGULATING VALVE
9 - OIL PUMP

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Overlap Regulating Valve

Each shift group is assigned one overlap regulating
valve (1). The 1-2 / 4-5 overlap regulating valve is
installed in the shift valve housing; the 2-3 and 3-4
overlap regulating valves are installed in the valve
housing. The overlap regulating valve regulates the
pressure reduction during a shift phase.

Command Valve

Each shift group possesses one command valve (3). The 1-2 / 4-5 and 2-3 command valves are installed in the shift
valve housing, the 3-4 command valve is installed in the valve housing. The command valve switches the shift
group from the stationary phase to the shift phase and back again.

1 - OVERLAP REGULATING VALVE
2 - ANNULAR SURFACE ON OVERLAP REGULATING VALVE

1 - HOLDING CLUTCH B1
2 - DRIVING CLUTCH K1
3 - 1-2/4-5 COMMAND VALVE

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Holding Pressure Shift Valve

Each shift group possesses one holding pressure shift valve (1). The 1-2 / 4-5 and 2-3 holding pressure shift valves
are installed in the shift valve housing; the 3-4 holding pressure shift valve is installed in the valve housing. The
holding pressure shift valve allocates the working pressure to one actuator of a shift group.

Shift Pressure Shift Valve

Each shift group possesses one shift pressure shift valve (4). The 1-2 / 4-5 and 2-3 shift pressure shift valves are
installed in the shift valve housing; the 3-4 shift pressure shift valve is installed in the valve housing. It assigns the

1 - HOLDING PRESSURE SHIFT VALVE

1 - 1-2/4-5 COMMAND VALVE
2 - DRIVING CLUTCH K1
3 - HOLDING CLUTCH B1
4 - 1-2/4-5 SHIFT PRESSURE SHIFT VALVE

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shift pressure (p-S) to the activating actuator and the overlap pressure (p-Ü) regulated by the overlap regulating
valve to the deactivating actuator.

Lubrication Pressure Regulating Valve

The lubrication pressure regulating valve (1) is located
in the valve housing of the electrohydraulic control
module. The valve controls the fluid to lubricate and
cool the mechanical part of the transmission, and lim-
its the pressure in the torque converter.

Shift Pressure Regulating Valve

The shift pressure regulating valve (1) is located in the
valve housing of the shift plate. It regulates the shift
pressure (p-S).

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