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A 4708 brake shoe is a crucial part of the brake system found in many heavy-duty trucks and trailers. The brake shoe acts as a lever that holds the brake lining and, when needed, presses against the brake drum to slow down or stop the vehicle. Several types of brake shoes exist, each with unique features and applications. They include;
Cast Iron Brake Shoes:
These shoes are made from cast iron, a strong and durable material that can withstand a lot of friction and heat. This makes them perfect for heavy-duty trucks that need to stop heavy loads. However, they might be too heavy for light-duty vehicles.
Woven Brake Shoes:
These shoes have linings made from natural fibers like cotton or wool, woven together. The linings offer good stopping power and are gentle on brake drums, meaning they won't wear them out quickly. Woven brake shoes are often used in older vehicles or those with less demanding braking needs.
Semi-Metallic Brake Shoes:
Semi-metallic brake shoes have linings that are halfway between organic and fully metallic materials. They usually contain around 30-70% metal fibers blended with organic materials. This combination gives them good braking performance and durability while being quieter and less abrasive than all-metal linings. Semi-metallic shoes are commonly used in various vehicles, including those for light and heavy-duty applications.
Composite Brake Shoes:
Composite brake shoes are made from advanced materials like plastics or composites. These shoes are lighter and resistant to corrosion, making them ideal for applications where weight reduction is essential, such as in racing or high-performance vehicles. However, they might not be as heat-resistant or wear-resistant as cast iron or steel shoes.
4708 Brake Shoes:
They are another name for the 4708 brake shoe, which is commonly referred to as the ""Qwik-Shoe."" Qwik-Shoe brake shoes are pre-assembled and ready to install, saving time and labor costs. They come with various lining materials to suit different applications and preferences.
Drum Brake Shoes:
These are standard brake shoes used in most vehicles. They are affordable, reliable, and easy to maintain. However, they may not perform well in extreme conditions like very high speeds or temperatures. Some modern cars use disc brakes, which offer better braking performance but are more expensive and require more maintenance.
Brake shoes have different specifications depending on the model. Here are general specifications for the 4708 brake shoe:
Brake shoe size
The 4708 brake shoe is available in different sizes. The brake shoe length ranges from 26.0 inches to 28.0 inches. On the other hand, the brake shoe width varies from 6.5 inches to 7.0 inches. The size of the brake shoe affects the braking power and performance of a vehicle.
Material
Brake shoes are made from different materials, including cast iron and steel. Each of the materials has its pros and cons. Cast iron is a good heat insulator and is resistant to corrosion. On the other hand, steel is strong and has high durability.
Brake shoe lining
The 4708 brake shoe linings come in different thicknesses. The lining thickness can range from 0.25 inches to 0.50 inches. A thicker lining offers better braking performance. However, it wears out quickly compared to the thin linings.
Brake shoe mounting
The 4708 brake shoe is mounted using bolts or clips. The mounting method affects the ease of brake shoe replacement. A brake shoe mounted using clips is easy to replace compared to the one mounted using bolts.
Brake shoe design
The 4708 brake shoe comes in different designs, such as Single and Double. The single 4708 brake shoe design uses one brake lining. On the other hand, the double 4708 brake shoe design uses two brake linings.
It is important to maintain the 4708 brake shoes to ensure they last longer and provide effective braking. Here are some maintenance tips:
Regular inspection
The first step in maintaining the 4708 brake shoe is to inspect it regularly. During the inspection, check for signs of wear, cracks, oil contamination, and damage. The earlier the problems are detected, the easier they can be fixed.
Brake shoe cleaning
Cleaning the brake shoes is important when there is dirt and dust accumulated on the surface. Use a wire brush to remove the dirt and dust. A clean brake shoe functions efficiently and lasts longer.
Brake adjustment
Brake adjustment is important to ensure the brake shoes and drums have an even wear pattern. Improper brake adjustment causes the shoes to wear out quickly. Check the brake system and make the necessary adjustments.
Replace brake shoes in pairs
Once the 4708 brake shoes are worn out, replace them immediately. However, do not replace a single shoe. Replace the shoes in pairs to ensure even braking and avoid imbalance in the brake system.
Choosing the right 4708 brake shoe for a specific vehicle requires careful consideration of various factors to ensure optimal braking performance, safety, and longevity. Here are some key factors to keep in mind:
Replacing a 4708 brake shoe can be a complex task that typically requires mechanical expertise. However, for those with sufficient knowledge and experience, here are the steps to replace a 4708 brake shoe:
It is essential to ensure all components are correctly installed and functioning before driving the vehicle. If unsure about any step, consult a professional mechanic for assistance.
Q1: What does the number 4708 brake shoe mean?
A1: The number 4708 refers to a specific model or part number of a brake shoe that is used in various vehicles. Different vehicles use different models of brake shoes depending on their braking system.
Q2: Are 4708 brake shoes used in drum brakes or disc brakes?
A2: The 4708 brake shoes are used in drum brake systems. In drum brakes, the brake shoes are pressed against a revolving drum to slow down or stop the wheels from turning.
Q3: Can 4708 brake shoes be used on any vehicle?
A3: No, the 4708 brake shoes are designed for specific vehicles such as trucks, buses, or certain models of cars. It is important to check the vehicle's manual or consult a mechanic before using them.
Q4: Do 4708 brake shoes require maintenance?
A4: Like any other brake shoe, the 4708s require periodic inspections. They should be replaced once they wear out to ensure the vehicle's braking system functions effectively and safely.
Q5: Where can people buy 4708 brake shoes?
A5: Buyers can purchase them from automotive parts retailers, specialized stores, or online platforms such as Cooig.com. It is advisable to buy them from authorized suppliers to avoid counterfeit products.
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