PCV Valve Hose: Service and Repair

WM 105209 Loosening and securing positive crankcase ventilation (PCV line) (includes replacing sealing rings)

Technical values





Preliminary work

1. Remove right engine compartment cover. -> 700219 Removing and installing front cover (engine compartment) - section on "Removing" 700219 Removing and installing front trim (engine compartment)
2. Remove primary catalytic converter on the right-hand side (cylinder bank 1 to 4). -> 267619 Removing and installing primary catalytic converter on V8 4.8-litre DFI engines - section on "Removing" 267619 Removing and installing primary catalytic converter on 4.8-litre V8 DFI engines
3. Remove right holder for primary catalytic converter at the crankcase. -9-





Catalytic converter holder - Turbo engine

Loosening and securing positive crankcase ventilation (PCV line) (includes replacing sealing rings)

1. Loosen the clamp. To do this, remove nut (difficult to access in vehicle). -1-





Oil circuit for turbocharger, line connection, cylinders 1 to 4





2. Remove screw on the crankcase -2- and remove screw on the timing-case cover. Loosen the line. Pull line out of the crankcase. Replace sealing rings.





Positive crankcase ventilation (PCV), turbo engine M48/51





3. Move line with new sealing rings back into installation position.
4. Secure clamp with nut.
5. Tighten screw on the timing-case cover and on the crankcase.

Subsequent work

1. Fit right holder for primary catalytic converter on the crankcase. -9- => Tightening torque: 23 Nm (17 ftlb.)





Catalytic converter holder - Turbo engine

2. Install primary catalytic converter on the right-hand side (cylinder bank 1 to 4). -> 267619 Removing and installing primary catalytic converter on V8 4.8-litre DFI engines - section on "Installing" 267619 Removing and installing primary catalytic converter on 4.8-litre V8 DFI engines
3. Fit engine compartment cover. -> 700219 Removing and installing front trim panel (engine compartment) - section on "Installing" 700219 Removing and installing front trim (engine compartment)