Control Valve Pressure, Function - GF27.60-P-3017AHG

Transmission 722.9 In Model 463 as of model year 2013 

Function requirements for control valve pressure, general 

• Circuit 87 ON
• Circuit 61 (engine running)

Control valve pressure, general 

The control valve supply pressure is drawn from the working pressure and is limited to a maximum pressure of 8 bar.

2 supply pressure regulating valves are used.

• Supply pressure regulating valve 1 
• Supply pressure 2 regulating valve 

Supply pressure regulating valve 1 

Supply pressure regulating valve 1 supplies the following control solenoid valves:

• Working pressure control solenoid valve (Y3/8y1)
• Clutch control solenoid valve K2 (Y3/8y3)
• Multidisk brake control solenoid valve B2 (Y3/8y6)
• Control solenoid valve for torque converter lockup clutch (Y3/8y8)

Supply pressure 2 regulating valve 

Supply pressure regulating valve 2 supplies the following control solenoid valves:

• Clutch control solenoid valve K1 (Y3/8y2)
• Clutch control solenoid valve K3 (Y3/8y4)
• Multidisk brake control solenoid valve B1 (Y3/8y5)
• Multidisk brake control solenoid valve B3 (Y3/8y7)

By using two supply pressure regulating valves, the control solenoid valve groups are isolated from each other and the control solenoid valve groups do not influence each other during any shift operation.

Overview of system components for automatic transmission (AT)

GF27.10-P-9992AHG