Oil Pressure Sensor: Service and Repair
WM 170419 Removing and installing oil pressure sensor on 4.8 liter DFI engines
Preliminary work
Preliminary work
1. Remove Y-pipe or intake pipes upstream of the throttle valve to create unrestricted access to the drive belt and to the oil pressure sensor.
2. Remove drive belt in the area of the lower deflection roller.
3. Remove oil dipstick with tube. -1-
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; timing-case cover to oil guide housing
7 - Oil level sensor
8 - O-ring
9 - Joint flange
10 - Screw, M6 x 20
11 - Screw, M6 x 16
A - Direction of travel
4. Remove deflection roller between the vibration balancer and the generator. To do this, use a small screwdriver to prise off the lid and loosen the screw. Remove deflection roller with screw. -1-
Belt drive
1 - Deflection roller
2 - Hydraulic belt tensioner; tensioner to lever
3 - Screw, M8 x 96; complete lever to timing-case cover and cylinder head
4 - Deflection roller
5 - Dual poly-V-belt
Removing oil pressure sensor
Removing oil pressure sensor
1. Pull off cable plug for oil pressure sensor.
2. Place a cloth around the components. Collect dripping oil.
3. Remove oil pressure sensor (oil pressure sender) with adapter -3 and 1-. To do this, remove the two screws -4- and pull the components straight off. Replace sealing rings.
Oil pressure sensor and oil pressure measuring point
1 - Oil pressure sensor adapter
2 - O-ring
3 - Oil pressure sender with temperature sensor
4 - Screw, M6 x 40
5 - Stopper; test connection
6 - Sealing ring
A - Direction of travel
Installing oil pressure sensor
Installing oil pressure sensor
1. Clean all traces of oil from installation location of oil pressure sensor.
Information:
Do not turn the oil pressure sensor in the adapter. Risk of breakage!
Do not break off sensor tips! Insert carefully.
2. Move oil pressure sensor (oil pressure sender) with adapter and new sealing rings into installation position -3 and 1-. Position and fit the two screws -4-.
Oil pressure sensor and oil pressure measuring point
1 - Oil pressure sensor adapter
2 - O-ring
3 - Oil pressure sender with temperature sensor
4 - Screw, M6 x 40 - Tightening torque: 10 Nm (7.5 ftlb.)
5 - Stopper - Tightening torque: 15 Nm (11 ftlb.)
6 - Sealing ring
A - Direction of travel
3. Connect cable plug for oil pressure sensor.
Subsequent work
Subsequent work
1. Fit deflection roller between the vibration balancer and generator -1-. Position deflection roller with screw and tighten the screw. Press on lid.
Belt drive
1 - Deflection roller - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
2 - Hydraulic belt tensioner; tensioner to lever - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.); tensioning roller to tensioning lever - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
3 - Screw, M8 x 96; complete lever to timing-case cover and cylinder head - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.); belt tensioner and timing-case cover to bracket - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
4 - Deflection roller - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
5 - Dual poly-V-belt
2. Fit oil dipstick with tube -1-. Use new sealing rings.
Oil guide housing with accessories
1 - Guide tube
2 - O-ring
3 - Screw, M6 x 16 - Tightening torque: 10 Nm (7.5 ftlb.)
4 - Oil dipstick
5 - O-ring
6 - Screw, M6 x 25; timing-case cover to oil guide housing - Tightening torque: 12 Nm (9 ftlb.); oil level sensor to oil guide housing - Tightening torque: 10 Nm (9 ftlb.); oil guide housing to lower part of crankcase - Tightening torque: 13 Nm (9.5 ftlb.)
7 - Oil level sensor
8 - O-ring
9 - Joint flange
10 - Screw, M6 x 20 - Tightening torque: 10 Nm (7.5 ftlb.)
11 - Screw, M6 x 16 - Tightening torque: 10 Nm (7.5 ftlb.)
A - Direction of travel
3. Fit drive belt.
4. Fit Y-pipe or intake pipes.