Braking with Ease: How to Lubricate Brake Caliper Piston

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Introducing our latest blog post: “Braking with Ease: How to Lubricate Brake Caliper Piston.” In this article, lubricationfaqs will delve into an important aspect of brake maintenance that every car owner should be aware of. By properly lubricating the brake caliper piston, you can ensure smooth and efficient braking performance, enhancing your overall driving experience and safety on the road. Stay tuned as we explore the step-by-step process and provide valuable insights and tips for maintaining your vehicle’s braking system.

Why is Caliper Piston Not Working?


Corrosion or rust is the most frequent and probable cause of your caliper piston not compressing. Most frequently, corroded or rusty caliper pistons are what render the caliper pistons unusable owing to a broken caliper piston rod. In general, corrosion can make the brake calipers stop working or cause the front wheel to rub when driving. You should be aware that even a small bit of rust might change the compression level.

Brake hose is damaged

A sticky brake caliper may also be caused by a broken brake hose. When a hose starts to break or burst, brake fluid spills into the piston. Inability to return to the master cylinder, where it belongs, will cause the caliper to become stuck. The caliper itself, however, may not always become stuck. Occasionally, the brake system may feel exactly the same as it did prior to the hose breaking. Conduct an inspection to discover where the issue originated.

The reverse wind method is in error

If the issue arises with the next caliper, it’s probable that you neglected to adhere to the maintenance procedure’s directions. Keep in mind that the front and rear calipers operate in different ways. You must adhere to the specific methods in order to compress them. Without a doubt, it is incredibly challenging to insert the following calipers. They need to be simultaneously twisted and pressed.

Additionally, an excellent approach to employ them is to use upwind rotators. If your handbrake is an electric brake, rewinding it could need a diagnostic instrument. Always be alert for any additional signs of damage, such as both of the front brake calipers that won’t disengage.

Lubricating Greases for Calipers

Lubricating Greases for Calipers

Based on their intended use, all caliper greases are categorized into three categories:

Grease’s key anti-seize characteristic allows it to endure exposure to high temperatures. The contact areas of brake pads and anti-scratch plates are lubricated with them. They are typically identified as Anti-Seize. The most prevalent fat group is this one. Grease with copper, graphite, aluminum impurities, molybdenum disulfide, ceramics, magnesium silicate, and other non-metallic additives are among those that fall under this category.

The brake cylinder’s piston edges are in use, the bushings are made of plastic, and the components in touch with the seal are part of the second group of lubricants. They bear the label “Rubber Grease.” In this situation, using silicone grease of any kind is unacceptable.

The third category of lubricants is the most often used. For all of the caliper’s moving parts, it contains universal lubricants. suited for use in parts that come into touch with plastics and elastomers.

Which Lubricant is Suitable for Brake Caliper Piston?

You need more than just a little grease or oil to effectively apply brake fluid. Specific lubricants are needed because of the peculiar circumstances that the brakes operate in. The brakes heat up to an incredibly high degree even with light use. Under these severe circumstances, conventional lubricants can melt and drop or splash onto other components of the brake system, such as the brake pads and rotor. Brake discs that are slick will not function.

If you’re getting ready to work on your brakes, make sure to buy the proper lubricant along with your new rotor and gasket. Rubber and plastic seals can be harmed by lubricants based on petroleum. Use a synthetic lubricant free of silicone and petroleum when lubricating areas that have rubber or plastic components. Use a dry film lubricant with molybdenum disulfide or graphite to lubricate metal-on-metal components.

How to Lubricate Brake Caliper Piston

The simplest approach to avoid the caliper pistons getting caught is to keep them clean. When changing the brake pads, take advantage of the extra time to clean the piston holes with a brush and brake cleaner. Any dirt and debris that can cause the pistons to stick will be cleared away in this manner.

How to Lubricate Brake Caliper Piston

You can also blast out the drilled holes with compressed air after cleaning them. Another method to stop your caliper pistons from compressing is to make sure they are properly greased. While changing the brake pads, spray a thin layer of oil into the piston holes. The pistons will be able to move more freely and won’t stick as a result.

The location of the lubricant is crucial to consider when installing your brake system. Lubricate all sliding or moving parts to enable smooth braking and proper system performance in general. You should decide on the bare minimum of lubricant. A light covering is all that is necessary. After the post clamps have been put on the caliper, lubricant should be applied to all of the caliper bushings, slide pins, and the edges of the spacer tabs. Each car model has a fairly diverse set of tabs.

The rear of the PowerStop pad doesn’t require any oil. Without lubrication, our laminated shims were tested for noise and assure silent braking. The back of the pad, which comes into contact with the caliper piston, might optionally have a tiny coating of lubrication applied there. The friction side of the pad should not get any lubricant, at any costs. Your brakes will stop working as a result of the lubrication because there is where the stopping force originates.

Winding Up

In conclusion, lubricating the brake caliper piston is an important maintenance task that should not be overlooked. By ensuring that the piston is properly lubricated, you can improve the overall performance of your brakes and enhance their longevity.

Regularly lubricating the brake caliper piston will help to prevent sticking, reduce noise, and promote smoother braking. Remember to consult your vehicle’s manual and use the appropriate lubricant for your specific brake system. Taking the time to lubricate your brake caliper piston will contribute to a safer and more enjoyable driving experience.

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