Removing and Installing Left Cylinder Head
11 12 105 Removing and installing left cylinder head (S63)Special tools required:
Necessary preliminary work:
^ Remove front axle completely with engine and transmission.
The graphic shows the removed engine on the lifting table, special tool 81 22 2 184 136.
The graphic shows the E72.
Necessary preliminary work:
^ Check timing
^ Remove left inlet and exhaust adjustment unit
Release screw (1).
Note:
Guide rail is loose from cylinder head.
Release bolts (1) at front from cylinder head.
Release cylinder head bolts in sequence (10 to 1).
Remove all cylinder head bolts with washers.
Note:
For purposes of clarity, the graphic shows the camshafts removed.
Clean sealing faces of cylinder head and engine block; if necessary, remove gasket debris compound with special tool 11 4 470 . Make sure no gasket remnants drop into oil and cooling channels.
Important!
Risk of cracking!
Threaded bores in engine block must be free of dirt and oil
Check cylinder head for leaks.
Check cylinder head sealing face for surface evenness.
Coat joint between engine block and timing case cover with Three Bond 1209 (refer to BMW Parts Service).
Note:
Graphic shows an N62 engine by way of example.
Check fitting sleeves (1) for damage and correct installation position.
Installation Note:
Renew cylinder head gasket (2).
Fit new cylinder head gasket (2).
Note:
Graphic corresponds to cylinders 1-4.
Put the cylinder head on.
Do not wash off bolt coating.
Installation Note:
Fit new cylinder head bolts.
Insert new cylinder head bolts and initially tighten so that they are free of play.
Tighten down cylinder head bolts in sequence 1 - 10.
Tightening torque 11 12 1AZ.
Install and tighten down bolts (1) between cylinder head and timing case cover.
Tightening torque 11 12 2AZ.
Insert screw (1) of guide rail and tighten down.
Tightening torque 11 31 3AZ.
If necessary, install camshafts.
Install left inlet and exhaust adjustment units.
Assemble engine.
