11 28 Ribbed V-belt with tension and deflection system
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 - RIBBED V-BELT WITH TENSION AND DEFLECTION SYSTEM [N51]
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Belt tensioner to engine block | N51 | M11 x 65 | Thread repair is not permitted | |
| Jointing torque | 25 Nm | |||
| Torque angle | 90 ° | |||
| 2AZ Deflection pulley to alternator | N51 | M10 x 40 | 40 Nm |
TIGHTENING TORQUES - RIBBED V-BELT WITH TENSION AND DEFLECTION SYSTEM [N52K]
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ ASA screws (1 x) Belt tensioner to crankcase. The end faces of the aluminium screw heads are painted blue. |
N52K / Not for E70 N52K B30 | M11 x 65 | Replace screws. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 25 Nm | |||
| Torque angle | 90 ° | |||
| 2AZ ASA screw (1 x) Belt tensioner to crankcase. The end faces of the aluminium screw heads are painted blue. |
E70 N52K B30 | M11 x 99 | Replace screws. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 25 Nm | |||
| Torque angle | 90 ° | |||
| 3AZ Hexagon screw (1 x) Deflection pulley to alternator. |
N52K | M10 x 45 | 40 Nm |