11 12 100 Removing and installing/replacing cylinder head (M52TU / M54 / M56): Installation

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2006 BMW 325Ci, 2005 BMW 325xi, 2005 BMW 325i, 2005 BMW 325Ci, and 2004 BMW 325xi. However, it is still accessible from the selected car via links, so may be relevant.

Installation of cylinder head is described separately from removal.

Clean sealing faces of cylinder head and engine block; if necessary, remove traces of gasket with hardwood spatula. Make sure no gasket remnants drop into oil and cooling channels.

Check adapter sleeves for damage and correct installation position.

Fig 1: Checking Adapter Sleeves For Damage And Correct Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Apply permanently elastic sealing compound Drei Bond 1209 to joints to timing case cover.

Replace cylinder head gasket.

NOTE: A cylinder head seal 0.3 mm thicker than usual can be obtained for machined (milled) cylinder heads.

Fig 2: Identifying Cylinder Head Seal

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Different cylinder head bolts for M52TU engine: M10x95 for engines with cast iron engine block. M10x110 for engines with aluminum engine block.

Use cylinder head bolts only once.

There must be no oil in the tapped holes of the engine block and the timing case cover.

Risk of cracking and distorted tightening values.

Put the cylinder head on.

Apply a light coat of oil to washer contact area and thread of new cylinder head bolts.

Tighten down cylinder head bolts in sequence 1 to 14.

Tightening torque; Jointing torque 30 N.m and an additional 90° and an 90°.

Fig 3: Cylinder Head Bolts Tightening/Loosening Sequence