Cylinder head, removing and installing: Removing
WARNING: This page is about a different car, the 2004 Volkswagen R32. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:
- Route lines of all types (e.g. for fuel, hydraulic, EVAP system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
- To prevent damages to the lines, make sure there is sufficient clearance to all moving or hot components.
- Check whether a coded radio is installed. If necessary, obtain the anti-theft coding.
- Disconnect battery Ground (GND) strap with the ignition switched off.
NOTE:
- All cable ties which are opened or cut open when removing, must be replaced in the same position when installing.
- Unbolt front exhaust pipe from exhaust manifold, refer to Exhaust system components, removing and installing .
NOTE:
- Before disconnecting harness connectors, mark allocation to component.
- Separate the connections from camshaft position (CMP) sensor G40 - 1 - and camshaft position (CMP) sensor 2 G163 - 2 -.
- Pull off the connectors - 3 - and - 4 -.
- Remove intake manifold, refer to Cylinder head cover, removing and installing .
CAUTION:
Fuel supply lines are under pressure! Wear eye protection and protective gloves to avoid injuries and skin contact with fuel. Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
- Pull off fuel supply line - 1 - (with white marking) and fuel return line - 2 - (with blue marking) at fuel rail, and catch any released fuel with a shop rag.
- Seal lines so that the fuel system is not contaminated by dirt etc.
- Unclip fuel lines at cylinder head cover.
- Turn crankshaft at vibration damper securing bolt in engine direction of rotation to TDC cyl. 1 - arrow -.
- Disconnect 2-pin connector from Engine Coolant Temperature (ECT) Sensor G62 - arrow -.
- Drain coolant, refer to Cooling system, draining and filling under Cooling system, draining and filling .
- Remove thermostat housing, refer to Cooling system components (on engine), assembly overview .
- Remove cylinder head cover, refer to Cylinder head cover, removing and installing .
- Remove camshaft roller chain tensioner - arrow -.
- Remove bolts - arrows - from cover and remove it.
NOTE:
- Do not mark chain with a center punch or similar means!
- Mark roller chains before removing (e.g. with paint, arrow pointing in direction of rotation).
NOTE:
- Counter-hold only with 32 mm open end wrench on camshaft - arrow -. Camshaft bar T10068 A must not be installed when camshaft adjuster is loosened or tightened.
- Remove exhaust camshaft adjuster.
- Remove camshaft adjuster with camshaft roller chain from intake camshaft.
- Remove bolts - arrows - for guide rail - 1 - and remove guide rail.
- Place camshaft roller chain aside.
- Loosen socket head bolts in the given sequence from outside to inside and then remove completely.
- Hook in lifting tackle 3033 as follows and carefully lift cylinder head with workshop crane VAS 6100. Vibration damper side: - Position 3 - and flywheel side: - Position 11 -
NOTE:
- With 1 to 12 marked positions, point the lifting tackle toward the flywheel side.
- The threaded spindles are adjusted to length as required.
- Carefully lift cylinder head off.
- Place a clean cloth in cylinders so that no dirt or emery cloth particles can get in between cylinder wall and piston.
- Prevent dirt and emery cloth particles from getting into the coolant.
- Carefully clean cylinder head and cylinder block sealing surfaces. This ensures that no scoring or scratches are formed (when using abrasive paper the grade must not be less than 100).