belt Archives - UnderhoodService
Belts and Pulley Alignment

A misalignment of the plane of the belt can occur when a pulley is not parallel to the other pulleys on the belt drive system.

Engineering Better Belt Systems

An accessory drive belt is always both speeding up and slowing down.

10 Timing Belt Tips

Here are the some key installation and service tips to make your next timing belt job just a little easier.

Serpentine Belt Post Mortem: Why Do Some Belts Fail

It doesn’t matter if it is a v-belt, serpentine belt or stretch belt, all belts need friction to operate.

Curing Belt Squeal

Here are five techniques you can use to solve belt noise problems.

Cure Belt Noise: New And Old Technology Solutions

A worn automatic belt tensioner has consequences beyond a loose belt.

Understanding Belt Friction And Tension

Misalignment and bearing wear can cause the belt to track off-center.

Dayco Tech Tip: Long-Lasting Vehicle Belts

Belts continue to be one of the most frequently replaced wear items on vehicles today. The typical replacement interval for serpentine belts and flat belts today is around 90,000 miles – which for many vehicles means only once every seven to nine years!

VIDEO: The Science Of Stretch Belts

Andrew Markel talks stretch belts, and how they manage to keep working without a tensioner. Sponsored by Dayco.

VIDEO: Making Belt Replacement Easier

Andrew Markel discusses serpentine belt replacement, and a few tips to make the next belt replacement job easier. Sponsored by Dayco.

Inspect The Belt Before The Replacement Interval

If you have looked at some maintenance schedules on late-model cars and trucks, you may notice that there have been some changes to the interval schedule for drive belts. Some manufacturers like GM are shifting to an inspection of the drive belt, instead of specifying a set replacement interval. While some manufacturers like Chrysler are recommending a 120,000-mile replacement interval in the owner’s manual.

Subaru Stretch Belt Inspection & Replacement

If you see a belt on a late-model Subaru that does not have an automatic tensioner and runs between only two or three components, it’s probably a stretch belt. These types of belts typically are used to turn the A/C compressor on the 2.5L four-cylinder engine in 2008 and later models.