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Home >> Porsche >> 2017 >> Macan S >> Repair and Diagnosis >> External Pages >> Different car >> Section 786 (15 - Engine - Cylinder Head, Valve Control) >> WM 155519 Removing and installing hydraulic valve for valve lift switchover >> Preliminary work

Preliminary work

WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.

Information 

Before replacing the hydraulic valve, perform Guided Fault Finding using the PIWIS Tester and run the DME short test "Valve lift". This is essential in order to avoid replacing the hydraulic valves unnecessarily.

The hydraulic valves are on the rear side of the cylinder heads facing the plenum panel.

  1. Remove cross panel. → 508119 REMOVING AND INSTALLING CROSS PANEL (DISASSEMBLING PLENUM PANEL) .
  2. Cylinder bank 1 to 3: 

    Remove vacuum pump → 477619 REMOVING AND INSTALLING VACUUM PUMP .

  3. Cylinder bank 4 to 6: 

    Disconnect coolant pipe.

    1. 3.1. Loosen coolant pipe holder.