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

GF27.60-P-3017AHZ control valve pressure, function
- Transmission 722.902/903/904/906/907 [model 164.1]
- Transmission 722.902/903/904 [model 164.8]
- Transmission 722.902/904/906/999 [model 251.1]


Control valve pressure function requirements (control valve supply pressure), general
^ Circuit 87 ON
^ Circuit 61 (engine running)

Control valve pressure (control valve supply 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 1 regulating valve
^ Supply pressure 2 regulating valve

Supply pressure 1 regulating valve
Supply pressure regulating valve 1 supplies the following control solenoid valves:
- Working pressure control solenoid valve (VGS) (Y3/8y1)
- K2 clutch control solenoid valve (VGS) (Y3/8y3)
- B2 brake control solenoid valve (VGS) (Y3/8y6)
- Torque converter lockup clutch control solenoid valve (VGS) (Y3/8y8)

Supply pressure 2 regulating valve
Supply pressure regulating valve 2 supplies the following control solenoid valves:
- K1 clutch control solenoid valve (VGS) (Y3/8y2)
- K3 clutch control solenoid valve (VGS) (Y3/8y4)
- B1 brake control solenoid valve (VGS) (Y3/8y5)
- B3 brake control solenoid valve (VGS) (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.