Oil Pressure Regulator Valve: Service and Repair

WM 172619 Removing and installing oil pressure control valve

Tools





Preliminary work

Information

If vehicles have fault entries relating to oil pressure, oil pump activation, oil pressure monitoring, etc. in the DME control unit (and a warning light comes "on" on the instrument cluster), proceed as follows:

- Check the oil level.

- Delete related faults.

- Do not replace components, such as the oil pump, oil pressure sensor or oil pressure control valve if you suspect that they are faulty.

If the vehicle has not been driven for a long time (months), the control mechanism in the oil pump can become stiff ("stick").

Very short trips and a lot of loading/manoeuvring can cause the oil to become very diluted => Oil pressure very low. For example, 20 cold starts in quick succession can reduce the viscosity of the engine oil by 30%.

- Change the engine oil. Test-drive the vehicle.

- If error messages/warnings are displayed again, proceed in accordance with the instructions under Guided Fault Finding in the PIWIS Tester.

1. Raise the vehicle -> 4X00IN Lifting the vehicle Service and Repair.
2. Remove front underbody panelling -> 519219 Removing and installing cover for front underbody - section on "Removing" 519219 Removing and installing Cover For Front Underbody
3. Drain engine oil -> 170117 Draining and filling in engine oil (changing engine oil) Removal and Replacement.

Information

Component overview

Information

The oil pressure control valve is located on the right side of the oil guide housing, at the front next to the oil filter.





Installation position









Oil guide housing with accessories









Oil pump









Oil pressure control valve and tool





Removing oil pressure control valve

1. Loosen retaining clip -1-.





Pulling off connector

2. Release connector -2- and pull it off.
3. Set connector -1- and cable aside and secure if necessary.
4. Unscrew fastening screws -3-.
5. Pull out the flange -1-.





Pulling out flange

6. Unscrew cap screw on the oil pressure control valve using a socket-wrench insert 9753.





Using special socket

7. Grip oil pressure control valve with a relay puller 9235 and turn carefully to remove it.





Removing/fitting oil pressure control valve

Installing oil pressure control valve

Information

The tightening specifications for the basic engine are stored centrally. -> 1001IN Tightening torques, tightening sequences, assembly overviews [1][2]Specifications. Tightening torques and assembly instructions for other assemblies (e.g. chassis, electrics, transmission or body) or for peripheral engine equipment can be found in the corresponding documents.

Information

- All O-rings must be replaced with new ones when re-installing the oil pressure control valve.

- Coat the O-rings with Vaseline or engine oil before installing the oil pressure control valve.

- Check the position of the bore hole compared with the nipple when positioning the flange.

1. The oil pressure control valve is installed in reverse order to removal.

Subsequent work

1. Install front underbody panelling -> 519219 Removing and installing cover for front underbody - section on "Installing" 519219 Removing and installing Cover For Front Underbody.
2. Fill in engine oil. For details, see -> 170117 Draining and filling in engine oil (changing engine oil) Removal and Replacement