Installing belt tensioner of alternator
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Component with preload
.
Injury hazard!
Injury hazard!
- Reduce preload as far as possible before disassembly. Relieve component.
- Insert and install the alternator (1) belt tensioner.
- Tighten the screws (arrows).
TIGHTENING TORQUE SPECIFICATIONS
| Belt tensioner to alternator/starter motor generator | ||
|---|---|---|
| M8X30 | Tightening torque | 28 Nm |
- Using a standard tool (1), increase the preload on the alternator belt tensioner by turning it in the direction of the arrow .
- Secure the alternator belt tensioner with the special tool 0 496 268 (11 0 390)
.
- Insert the drive belt for alternator (1) on the alternator (2) and install it.
- Make sure that the drive belt for alternator (1) has been installed correctly.
- Raise the preload with standard tools (1) on the belt tensioner in the arrow direction .
- Feed out the special tool 0 496 268 (11 0 390) from the belt tensioner and remove.
Follow-up work
- Refer to INSTALLING THE CLEAN AIR PIPE FOR CYLINDERS 1 TO 3 .
- Refer to INSTALLING THE FRONT-END STRUT .
- Refer to INSTALLING THE STIFFENING PLATE .
- Refer to INSTALLING FRONT UNDERBODY PROTECTION .
- Refer to INSTALLING THE FRONT SPOILER .
- Refer to INSTALLING THE LEFT AND RIGHT FRONT UNDERSHIELD .