Cylinder head, removing and installing: Removing
WARNING: This page is about a different variant/trim than selected.
- Read safety precautions before beginning work refer to Safety precautions when working on fuel supply system .
- Observe rules for cleanliness refer to Rules for cleanliness .
- First, check whether a coded radio is installed. If necessary, obtain anti-theft coding.
- With ignition switched off disconnect battery ground (GND) strap.
- Remove engine cover.
- Drain coolant, refer to Cooling system, draining and filling .
CAUTION:
Fuel supply line is under pressure! Wear protective goggles and protective clothing to prevent injuries and contact with skin. Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
- Disconnect fuel supply and return lines at connecting point of fuel rail.
- Seal lines so that the fuel system is not contaminated by dirt etc.
- Remove front exhaust pipe from exhaust manifold or turbocharger.
- Disconnect all required connections:
- Cooling system
- Crankcase ventilation
- Secondary air injection (AIR) system
- Turbocharger/regulation
- Fuel injection and ignition system
- Remove ribbed belt, refer to Ribbed belt, removing and installing .
- Remove ribbed belt tensioning element.
- Remove upper toothed belt guard.
- Bring camshaft gear to marking for TDC cylinder 1 by turning crankshaft. Marking on camshaft gear must align with - arrow - on toothed belt guard.
- Remove toothed belt from camshaft gear, refer to Toothed belt, removing, installing and tensioning .
- Turn crankshaft back slightly.
- Remove cylinder head cover.
- Loosen and remove cylinder head bolts in specified sequence.
NOTE:
- For polydrive cylinder head bolts, use Polydrive Key 3452 or Polydrive Bit and Drive Socket T10070.
- Carefully lift cylinder head off.