Where is the drive belt routing information?

Locate the Belt Routing Diagram. The serpentine belt routing diagram is usually located on a tag in the engine compartment. If it is not found there, it can be accessed in a repair manual, such as Chilton’s Online Repair Manual.

What happens if you put a drive belt on wrong?

In some instances it may be possible to install a serpentine belt the wrong way. If this happens, one or more pulleys will rotate in the WRONG direction, affecting the operation of the alternator, water pump, A/C compressor or power steering pump. This can cause major problems.

How much does it cost to replace a serpentine belt on a BMW?

BMW 328i Serpentine Belt Replacement Cost Estimate. Labor costs are estimated between $113 and $143 while parts are priced between $42 and $53. This range is based on the number and age of BMW 328i’s on the road. For a more accurate estimate based on your BMW and location, use our Fair Price Estimator.

How long do BMW serpentine belts last?

between 50,000 and 100,000 miles
How Long Do Serpentine Belts Last? Most modern serpentine belts are able to last anywhere between 50,000 and 100,000 miles, which is a fairly big window of time.

What are the symptoms of a bad belt tensioner?

• Rust bleed and cracks. Appearance: Rust is bleeding between arm and base or dripping from the tensioner.
• Pulley bearing wear.
• Pulley wear.
• Tensioner assembly misalignment.
• Tensioner noise.
• Tensioner arm misalignment.
• Excessive tensioner arm oscillation.
• Binding or grinding tensioner arm movement.

What is a tensioner pulley?

A drive belt tensioner is a pulley mounted on a spring mechanism or adjustable pivot point that is used to keep tension on the engine belts. Both are used to keep tension on the engine serpentine belts so that they can drive the various engine accessories.

What kind of drive belt does BMW E90 use?

Check out our Basic Maintenance section, which has all the parts you’ll need to get your vehicle running its best, including filters, fluids, brakes, spark plugs, lighting, and more for your E90! BMW E90 models utilize 1 multi-rib engine drive belt. The belt may be referred to as a serpentine belt because it snakes around the engine accessories.

Where are the belts located on a BMW?

BMW’s longitudinal engine layout places the belts at the front and center of the engine bay. To get to them, you’ll remove the fan assembly and the intake airbox. Once you can access the drive belt system, you’ll only need to remove two bolts to remove the parts that you’re replacing.

What is a serpentine belt on a BMW?

Replacing Your Drive Belt on Your BMW. A serpentine belt, also known as a multi-vee, poly-v, or multi-rib belt, is a single, continuous belt used to drive multiple peripheral devices in an automotive engine, such as an alternator, power steering pump, water pump, air conditioning compressor, air pump, etc.

How much does it cost to replace the belt on a BMW N52?

The BMW N52 Drive Belt Kit that we sell on our website comes with every part you’ll need to complete this job for just under $80. While the parts won’t have BMW’s stamp on them, they come from the same company that supplies BMW with their parts. How long will it take to replace the serpentine belt system on a BMW N52 engine?