Lubrication pressure, function - GF27.60-P-3014GZ
TRANSMISSION 722.9 in MODEL 164.1/8, 204.0, 216, 221, 251.0/1 up to Model Year 8
At the working pressure regulating valve excess oil is diverted to the lubrication pressure regulating valve and from there used in a regulated manner for lubrication and cooling of mechanical transmission parts and the torque converter.
In addition the pressure in the torque converter is limited via the lubrication pressure.
| Control solenoid valve component description | Model 164.1/8, 216, 221, 251.0/1 Working pressure control solenoid valve | GF27.19-P-5147GA |
|---|---|---|
| Model 164.1/8, 216, 221, 251.0/1 Clutch control solenoid valve K1 | GF27.19-P-5147GB | |
| Model 164.1/8, 216, 221, 251.0/1 Clutch control solenoid valve K2 | GF27.19-P-5147GC | |
| Model 164.1/8, 216, 221, 251.0/1 Clutch control solenoid valve K3 | GF27.19-P-5147GD | |
| Model 164.1/8, 216, 221, 251.0/1 Brake control solenoid valve B1 | GF27.19-P-5147GE | |
| Model 164.1/8, 216, 221, 251.0/1 Brake control solenoid valve B2 | GF27.19-P-5147GF | |
| Model 164.1/8, 216, 221, 251.0/1 Brake control solenoid valve B3 | GF27.19-P-5147GG | |
| Model 164.1/8, 216, 221, 251.0/1 Torque converter lockup clutch control solenoid valve | GF27.19-P-5147GH | |
| Model 204.0 Working pressure control solenoid valve | GF27.19-P-5147CWA | |
| Model 204.0 Clutch control solenoid valve K1 | GF27.19-P-5147CWB | |
| Model 204.0 Clutch control solenoid valve K2 | GF27.19-P-5147CWC | |
| Model 204.0 Clutch control solenoid valve K3 | GF27.19-P-5147CWD | |
| Model 204.0 Multidisk brake control solenoid valve B1 | GF27.19-P-5147CWE | |
| Model 204.0 Multidisk brake control solenoid valve B2 | GF27.19-P-5147CWF | |
| Model 204.0 Multidisk brake control solenoid valve B3 | GF27.19-P-5147CWG | |
| Model 204.0 Torque converter lockup clutch control solenoid valve | GF27.19-P-5147CWH | |
| Torque converter component description | GF27.20-P-2010GZ | |
| Oil pump component description | GF27.57-P-1010GZ |
Working/lubrication/shift pressure, function - GF27.60-P-3024AHZ
TRANSMISSION 722.902/903/904/906/907 in MODEL 164.1 as of Model Year 09/Modification year 08 Model refinement package
TRANSMISSION 722.902/903/904 in MODEL 164.8 as of Model Year 09/Modification Year 08
TRANSMISSION 722.902/904/906/999 in MODEL 251.0 as of Model Year 09/Modification year 08
TRANSMISSION 722.902/904/906/999 in MODEL 251.1 as of Model Year 09/Modification year 08
Function requirements for working/lubrication/shift pressure, general
- Circuit 87 ON
- Circuit 61 (engine running)
Working/lubrication/shift pressure, general
The oil pressures are separated into
- Working pressure
- Lubricating pressure
- Shift pressure
Working pressure
The oil pressure produced by the oil pump is converted into working pressure by the working pressure regulating valve.
The level of working pressure depends on the position of the regulating valve and therefore on its geometry.
The position of the working pressure regulating valve is influenced by the working pressure control solenoid valve (VGS) (Y3/8y1) in a manner which is dependent on load and gear. All other pressures required for the transmission control are derived from the working pressure.
Lubricating pressure
Excess oil is diverted to the lubrication pressure regulating valve at the working pressure regulating valve and from there used in a regulated manner for lubricating and cooling the mechanical transmission parts and torque converter. In addition the pressure in the torque converter is limited via the lubrication pressure.
Shift pressure
The shift pressure (pressure in the multi-disk clutch or in multi-disk brake) is derived from the working pressure.
The respective control solenoid valve influences the position of the associated regulating valve. In turn the position influences the pressure prevailing in the multi-disk brake or in multi-disk clutch. The pressure thus depends on the geometry of the respective regulating valve.
| Fully integrated transmission control unit, component description | Y3/8n4 | GF27.60-P-5165AHZ |