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Removing And Installing/sealing Left Cylinder Head Cover (N62) (Cylinder Bank 5 to 8) Remove design cover. Remove acoustic cover. Remove center of assembly partition wall. Remove ignition coil cover. Note: For purposes of clarity, the following work steps are shown on the engine after it has been removed. Installation: The cylinder head cover and its gasket are made from a single material which adapts to the contour of the cylinder head. The gasket and uncoupling elements of the screw connection are matched to each other. If the cylinder head cover was leaking, the fault can only be rectified with a new cylinder head cover, new gasket and new screw connections. View Full Image Unclip cable holder (1) with cables. Pull tank venting valve (2) off holder. View Full Image Unlock plug (1) and remove. View Full Image Release screws and remove sealing element (2). Remove sensors (3 and 4). Remove ignition coils. View Full Image Release both grounding cables. Unlock and detach vent hose. Unclip cable duct (1) and remove cable from holder. Remove servomotor for left eccentric shaft. View Full Image Unfasten screws. Remove spacer (3) upwards. Installation: Replace sealing ring. View Full Image Remove injection pipe. Release screw connections (1, 2, 3 and 4). If necessary, withdraw dipstick. Remove cylinder head cover. View Full Image Installation: Note installation direction of sealing ring (1). Groove in sealing ring (1) points outwards. View Full Image Replace sealing ring (1) and press into cylinder head cover until flush. View Full Image Installation: Align gasket (1) loosely in cover groove. Starting at corner radii, secure gasket (1 ) in cover groove and press into groove so that it is free of tension. View Full Image Installation: Replace spark plug domes. Coat rubber seals on spark plug dome (1) with anti-friction rubber coating. View Full Image Installation: Install spark plug domes in cylinder head. When fitting cylinder head cover: Align spark plug domes to cylinder head cover. View Full Image Installation: Clean gasket residue from sealing surface. Apply coat of Drei Bond 1209 to contact surfaces of joint. View Full Image Installation: Clean gasket residue from sealing surface. Apply thin, uniform bead of Drei Bond 1209 to transmission area on half-moon sections. View Full Image Replace sealing elements (1). View Full Image Installation: Make sure gasket is correctly seated at sides and on rear side of cylinder head. View Full Image Installation: Screw connections (1, 2, 3 and 4) of cylinder head cover are different. Replace screw connections (3). Insert screw connections (1, 2 and 3) without pretension and align cover. Tighten down screw connections (1 , 2 and 3) in diagonal sequence from inside to outside.

 

 

Removing And Installing/sealing Right Cylinder Head Cover (N62) (Cylinder Bank 1 to 4) Remove design cover. Remove acoustic cover. Remove center of assembly partition wall. Remove electronics box cover. Remove electronics box seal. These work steps are described in the section "Replacing control unit". Remove ignition coil cover. Remove intake filter housing (without raw air housing). Remove intake hose with air-mass flow sensor. Installation: The cylinder head cover and its gasket are made from a single material which adapts to the contour of the cylinder head. The gasket and uncoupling elements of the screw connection are matched to each other. If the cylinder head cover was leaking, the fault can only be rectified with a new cylinder head cover, new gasket and new screw connections. Note: For purposes of clarity, the following work steps are shown on the engine after it has been removed. View Full Image Unlock plug (1) and remove. View Full Image Release screws and remove sealing element (2). Remove sensors (3 and 4). Remove ignition coils. View Full Image Release both grounding cables. Unlock and detach vent hose. Unclip cable duct (1) and remove cable from holder. Remove servomotor for right eccentric shaft. View Full Image Unfasten screws. Remove spacer (3) upwards. Replace seal. View Full Image Remove injection pipe. Release screw connections (1, 2, 3 and 4). Remove cylinder head cover. View Full Image Installation: Note installation direction of sealing ring (1). Groove in sealing ring (1) points outwards. View Full Image Replace sealing ring (1) and press into cylinder head cover until flush. View Full Image Installation: Align gasket (1) loosely in cover groove. Starting at corner radii, secure gasket (1 ) in cover groove and press into groove so that it is free of tension. View Full Image Installation: Replace spark plug domes. Coat rubber seals on spark plug dome (1) with anti-friction rubber coating. View Full Image Installation: Install spark plug domes in cylinder head. When fitting cylinder head cover: Align spark plug domes to cylinder head cover. View Full Image Installation: Clean gasket residue from sealing surface. Apply coat of Drei Bond 1209 to contact surfaces of joint. View Full Image Installation: Clean gasket residue from sealing surface. Apply thin, uniform bead of Drei Bond 1209 to transmission area on half-moon sections View Full Image Replace sealing elements (1). View Full Image Installation: Make sure gasket is correctly seated at sides and on rear side of cylinder head. View Full Image Installation: Screw connections (1, 2, 3 and 4) of cylinder head cover are different. Replace screw connections (3). Insert screw connections (1, 2 and 3) without pretension and align cover. Tighten down screw connections (1, 2 and 3) in diagonal sequence from inside to outside.