Engine Oil Control Valve: Service and Repair
Removing and installing oil pressure control valve (solenoid valve) on 4.8-liter DFI engines
Preliminary work
1. Jack up the vehicle at the points provided.
2. Remove engine underbody panelling.
3. Drain engine oil.
Information
Component overview
Oil guide housing with accessories
1 - Guide tube
2 - O-ring
3 - Screw, M6 x 16
4 - Oil dipstick
5 - O-ring
6 - Screw, M6 x 25
7 - Oil-level sensor
8 - O-ring
9 - Joint flange for solenoid valve
10 - Screw, M6 x 20
11 - Screw, M6 x 16
Oil pump, M48 (Turbo shown)
1 - Oil pump with suction stage (Turbo shown)
2 - Screw, M8 x 22
3 - Oil pump sprocket
4 - Cap screw, M36 x 1.5 x 12
5 - Solenoid valve
6 - O-ring (grease before fitting)
7 - Dowel sleeve
8 - Screw, M6 x 45
9 - Sprocket cover
10 - Screw, M6 x 16
11 - Drive chain
12 - Connection for intake manifold joining socket
Oil pressure control valve and tool
1 - Screw, M6 x 20
2 - Joint flange with sealing ring
3 - Cap screw, M36
4 - Oil sealing ring with engine oil
5 - Solenoid valve/oil pressure control valve
6 - Special socket socket-wrench insert 9753
7 - Puller relay puller 9235
Removing oil pressure control valve (solenoid valve) on 4.8-liter DFI engines
Information
The oil pressure control valve is fitted in the oil guide housing under the generator between the engine carrier -1- and oil filter -2-.
Installation position of oil pressure control valve
1. Carefully grip the cable plug on the oil pressure control valve with a pointed-nose pliers and release it. Pull off cable plug.
2. Expose cable and set it aside. -cable-
Cable in front of oil pressure control valve
3. Remove screws on joint flange. -1-
Levering off joint flange
4. Carefully lever off the joint flange with a screwdriver. Overcome the resistance of the two sealing rings on the oil pressure control valve while doing this.
5. Fit special socket socket-wrench insert 9753 on a ratchet through the opening in the oil guide housing and loosen cap screw on oil pressure control valve.
Using special socket
6. 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 (solenoid valve) on 4.8-liter DFI engines
Oil pressure control valve and tool
1 - Screw, M6 x 20
2 - Joint flange with sealing ring
3 - Cap screw, M36
4 - Oil sealing ring with engine oil
5 - Solenoid valve/oil pressure control valve
6 - Special socket socket-wrench insert 9753
7 - Puller relay puller 9235
1. Replace two sealing rings on the oil pressure control valve -4-. Replace sealing ring on joint flange -2-.
2. Coat the two sealing rings on the oil pressure control valve lightly with Vaseline or engine oil.
3. Fit the oil pressure control valve as far as it will go into the oil pump so that the cable plug on the wire harness can be clipped in later without turning it.
Removing/fitting oil pressure control valve
4. Insert cap screw into the special socket socket-wrench insert 9753 and slide it on over the oil pressure control valve. Tighten cap screw hand-tight. When everything is fitted correctly, tighten the cap screw. - Tightening torque: 40 Nm (30 ftlb.)
Using special socket
5. Slide on joint flange with new sealing ring. Screw in and tighten screws -1-. - Tightening torque: 10 Nm (7.5 ftlb.)
Cable in front of oil pressure control valve
6. Route cable, clip it in and connect cable plug.
Subsequent work
1. Fill in engine oil and check oil level.
2. Fit engine underbody panelling.