Oil circuit – hydraulic system
Task and function of the solenoid valves in
the oil circuit
Gear train half pressure control solenoid valves
The gear train half pressure control solenoid valves
control the oil pressure for gear train halves 1 and 2.
If a fault is detected in a gear train half, the pressure
control solenoid valve can shut off the corresponding
gear train half.
lk
Gear train half 2
pressure control
valve
Gear train half 1
pressure control
valve
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Gear selector solenoid valves
The gear selector solenoid valves control the volume
of oil to the gear selectors. Each gear selector shifts
2 gears. If no gear is engaged, the gear selectors are
held in the neutral position via oil pressure.
In selector lever position "P" and when the ignition is
switched off, 1st gear and reverse gear are engaged.
Gears 6/R
Gears 2/4
Gears 5/7
Gears 1/3
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Clutch actuator solenoid valves
The clutch actuator solenoid valves control the volume
of oil to the clutch actuators. The clutch actuators
actuate clutches K1 and K2.
When not supplied with current, the solenoid valves
and the clutches are open.
K1
K2
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