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Home >> BMW >> 2011 >> Z4 35is >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine - Tightening Torques (N52)) >> Ribbed V-Belt With Tension And Deflection System >> 11 28 Ribbed V-belt with tension and deflection system

11 28 Ribbed V-belt with tension and deflection system

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TIGHTENING TORQUE SPECIFICATION - RIBBED V-BELT WITH TENSION AND DEFLECTION SYSTEM

  Type Thread Tightening specification Measure
1AZ ASA screw
Belt tensioner to crankcase.
Aluminium screws/bolts are permitted with and without colour coding (blue).
N52K/Nicht fur E70 N52K B30 M11 x 65 Replace screw.
Thread repairs are not permitted!
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
25 Nm
        Torque angle 90 °
2AZ ASA screw
Belt tensioner with deflection pulley to crankcase.
Aluminium screws/bolts are permitted with and without colour coding (blue).
E70 N52K B30 M11 x 99 Replace screw.
Thread repairs are not permitted!
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
25 Nm
        Torque angle 90 °
3AZ Hexagon screw
Deflection pulley to alternator.
N52K M10 x 45   40 Nm