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Synchro Shuttle Gearbox
2/4 Wheel Drive Clutch Operation
- Pressure ON/Spring OFF Type (cont'd)
2 Wheel Drive Operation
When the switch is in the 2 wheel drive position,
solenoid valve A is de-energised. With the solenoid
A1 de-energised, the valve spool moves under the
force of the spring A2. The oil supply to the piston
C is blocked (shown at port 3). At the same time oil
vents from the back of piston C to the sump via
ports 1 and 2.
www.WorkshopManuals.co.uk
Because there is no pressure behind piston C, the
friction/counter plates of clutch pack B now freely
rotate on the output shaft, thus disengaging drive
to the front axle.
Purchased from www.WorkshopManuals.co.uk
A406210
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