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Operation of One Speed Control valve
Transmission control valve N-range operation Transmission Control valve
Once the engine has been started the transmission oil pump will begin to supply the control valve with hydraulic oil. From Pump Transmission Control valve
The oil will follow the path of least resistance. Transmission Control valve
Regulator Transmission Control valve
Accumulator Transmission Control valve
Inching Spool Transmission Control valve
Filter Transmission Control valve
The oil has now filled all of the open channels in the control valve. Directional Solenoid Transmission Control valve
The accumulator is now the point of least resistance and absorbs the pressure from the oil. Accumulator Transmission Control valve
The oil will continue to compress the accumulator fully. Transmission Control valve
Once the accumulator is fully compressed, the oil will continue to the next location of least resistance. Transmission Control valve
The regulator now begins to open. Transmission Control valve Regulator
Once the regulator is open the oil is sent to the torque converter. Torque Converter Supply Transmission Control valve
As the oil heads to the torque converter the pressure in the control valve will drop. Transmission Control valve
The accumulator will compensate for this pressure loss. Transmission Control valve
The control valve is now ready for directional operations. Transmission Control valve
Reverse gear has been selected. Transmission Control valve
The directional solenoid moves the spool and directs the oil to the reverse clutch pack. Transmission Control valve Directional Solenoid
The pressure drops when the oil is sent to the R clutch pack. Transmission Control valve
The accumulator enters operation. Transmission Control valve
The clutch pack will not be fully engaged until the accumulator has completed its operation. Transmission Control valve
The clutch pack is now fully engaged. Transmission Control valve
Inching pedal has been pressed. Transmission Control valve Inching Spool
This will move the inching spool which will cut off oil supply to the clutch pack. Transmission Control valve
The oil will be returned back to tank via the tank port. Transmission Control valve
There is no oil pressure in the R clutch pack now. The clutch is disengaged. Transmission Control valve
Inching pedal released. Oil will be sent to the clutch pack again. Transmission Control valve
Once again the pressure drops when the oil is sent to the R clutch pack. Transmission Control valve
The accumulator enters operation. Transmission Control valve
The clutch pack is fully engaged. Transmission Control valve
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