11 11 Crankcase

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

TIGHTENING TORQUES - ENGINE BLOCK [N51]

	Type	Thread	Tightening specification	Measure
1AZ Main bearing bolts (steel bolts 10.9)	N51	M10 x 100	Replace screws.
			Jointing torque	20 Nm
			Torque angle	70 °
2AZ Bedplate Aluminium screws/bolts are marked with blue paint.	N51	M10 x 27	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	15 Nm
			Torque angle	45 °
3AZ Bedplate Aluminium screws/bolts are marked with blue paint.	N51	M8 x 37	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	8 Nm
			Torque angle	90 °
4AZ Bedplate Aluminium screws/bolts are marked with blue paint.	N51	M10 x 41	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	15 Nm
			Torque angle	90 °
5AZ Oil spray nozzles to engine block	N51	M8 x 1		12 Nm
6AZ Screw plug, water drain	N51	M14 x 1.5	Replace seal	50 Nm
7AZ Screw plug, timing case upper section	N51	M22 x 1.5	Replace seal	50 Nm
8AZ Screw plug, timing case lower section	N51	M16 x 1.5	Replace screw.	30 Nm

TIGHTENING TORQUES - CRANKCASE [N52K]

	Type	Thread	Tightening specification	Measure
1AZ Hexagon screws (14 x) Bedplate to crankcase.	N52K	M10 x 100	Replace screws. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	20 Nm
			Torque angle	70 °
2AZ ASA screws (25 x) Bedplate to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M10 x 27	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	15 Nm
			Torque angle	90 °
3AZ ASA screws (4 x) Bedplate to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M8 x 37	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	8 Nm
			Torque angle	90 °
4AZ ASA screws (2 x) Bedplate to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M10 x 41	Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail.
			Jointing torque	15 Nm
			Torque angle	90 °
5AZ Oil spray nozzles (6 x) Oil spray nozzles in crankcase.	N52K	M8 x 1		12 Nm
6AZ Plug (1 x) Coolant drain to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M14 x 1.5	Replace screw and sealing ring. Thread repairs are not permitted!	50 Nm
7AZ Plug (1 x) Assembly opening to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M22 x 1.5	Replace screw. Thread repairs are not permitted!	50 Nm
8AZ Plug (1 x) Assembly opening to crankcase. The end faces of the aluminium screw heads are painted blue.	N52K	M16 x 1.5	Replace screw. Thread repairs are not permitted!	27 Nm