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

GF27.60-P-3017AHT Control Valve Pressure, Function
- TRANSMISSION 722.931 in MODEL 221.074 /174, 216.374

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 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)
- Control solenoid valve for starting clutch (VGS) (Y3/8y9)

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.