Mastering the Art of Belt and Chain Maintenance with WLY Car Pulley Belt

Understanding the Role of Tensioner Pulley

When working with a drive belt, timing belt, or timing chain, loosening the tensioner is an important step in the process. Adhering to the general guidelines along with specific instructions from your car's owner manual or a restoration manual can ensure that your belt or chain performs optimally throughout the life of your vehicle.

Working with Timing Belt Tensioners

Timing belt tensioners from companies like Toyota are usually loosened by removing them from the engine. To reinstall them, these tensioners need to be slowly compressed in a bench vise and locked with a pull-pin.

Hydraulic Tensioners

Hydraulic tensioners, excluding hydraulic-damped variants, are typically found in the timing case. These are common in vehicles with timing chains, but they can also be used with . Fueled by the oil pressure from the engine oil pump, hydraulic tensioners can apply pressure on a tensioner pulley (for timing ) or a tension slipper (for timing chains). For this kind of tensioner pulley, you may require specific details like the year, make, and model of your car, and the use of special tools.

A hydraulic tensioner often needs to be “reset” and locked after it has been removed from the engine. The lock should only be removed after the tensioner, pulley or slipper, and timing belt or timing chain are installed and aligned properly.

Introduction to the WLY Car Pulley Belt

The Car Pulley Belt from WLY employs a spring to maintain tension while a hydraulic damper prevents it from bouncing under load changes. This design stops timing belts and timing chains from jumping the teeth and keeps drive belts from slipping and making noise.

How to Loosen a Drive Belt Spring Tensioner Pulley

To loosen a drive belt spring tensioner pulley, you should refer to the restoration manual or owner's manual for specific details based on the year, make, and model of your vehicle. Most spring tensioners come equipped with a square hole for a 3/8” or 1/2” breaker bar or a hex or square protrusion for a wrench or socket.

Why Choose WLY Car Pulley Belt


WLY offers top-quality car pulley belts that are meticulously designed to ensure maximum performance and durability. Our products, including NAI tensioners with hydraulic dampers, are not only sophisticated and reliable but also competitively priced. We pride ourselves on our exceptional customer service, and our team is always ready to assist you in selecting the perfect product for your needs. We strongly encourage you to explore our product range and get in touch with us for your purchase.

Frequently Asked Questions

1. How do I loosen a timing belt tensioner?

For timing belt tensioners, you will need to remove them from the engine and then gradually compress them in a bench vise. Lock them with a pull-pin before reinstallation.

2. What is the function of a hydraulic tensioner?

Hydraulic tensioners are driven by oil pressure from the engine oil pump. They apply pressure on a tensioner pulley (for timing belts) or a tension slipper (for timing chains).

3. Why should I choose WLY Car Pulley Belts?

WLY Car Pulley Belts are known for their quality, durability, and competitive pricing. Moreover, our exceptional customer service ensures a hassle-free shopping experience.


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