Freelander Automatic Gearbox: JATCO Torque Converter (Page 188)
AUTOMATIC GEARBOX - JATCO
DESCRIPTION AND OPERATION
44-19
Unlock Condition
1 Impeller
2 Turbine
3 Lock-up clutch
4 Release pressure
5 Lock-up control valve
6 Drain port
7 Torque converter pressure
8 Lock-up solenoid
9 Fluid cooler
10 Torque converter applied pressure
11 Lubrication
12 Input shaft
The unlock release pressure is supplied via the control valve to the lock-up clutch. The pressure forces the clutch
mechanism away from the torque converter and moves the lock-up mechanism into the unlock condition. The torque
converter pressure is decayed to the drain port, removing the applied pressure from the torque converter, allowing
the clutch mechanism to move.
M44 1623
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