BMW 11287618848 Ribbed V-Belt

However, belts are required for the proper running of a vehicle and they are subject to wear and tear which calls for regular checks. These models use drivebelts to drive alternator, power steering pump, air conditioning compressor while engine coolant pump and cooling fan is electrically driven. When checking the belt, ensure that the engine is off and manually inspect both sides for cracking separation fraying and glazing. Twist the belt around so that you can examine underneath it for tiny cracks that may be acceptable-replace the belt if there are any lengthwise cracks or when pieces drop out resulting in noise. To save time later on, mark the direction of rotation when taking off the old drivebelt; then release tension by compressing tensioner with a wrench or Torx bit and remove belt. Optionally keep tensioner compressed with metal rod thus securing its position while reinstalling it back into place by making sure it correctly positions on pulley grooves as noted earlier. Begin drivebelt tensioner replacement by removing the drivebelt first, then take out mounting bolts so as to get rid of tensioner from there. Finally reassemble new one in reverse order remembering to change aluminum mounting bolt at this stage.