How to assemble drum brakes

how to assemble drum brakes

Nov 15, (Image/Wayne Scraba) Begin the assembly process with the wheel cylinder(s). Theyre installed as shown here. They can only go in one way. During assembly, its a good idea to lightly lube the pushrods. Theyre definitely subject to corrosion. (Image/Wayne Scraba) Brake drum parts are typically sided left and right. Its easy to figure out: The opening for the e-brake cable faces forward. Reassemble your drum brakes. Saturate the dirt on the brake backing plate with brake parts cleaner; then wipe it off with a clean, grease-free rag. Dont blow the dust around it can cause serious lung damage. Wipe the dirt off the spindle and replace the wheel hub and brake drum on the spindle. If you have a floating drum, skip Steps 4.

Drum brakes were standard equipment for decades. Even high-powered muscle cars were equipped with drum brakes on at least one axle. A typical set of drum brakes can have dozens of individual parts, you have to deal with all of them correctly in order for the brakes to function properly.

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Learn how your comment data is processed. Summit Racing Equipment. Many were equipped with drums on the front too. Drums can fade. They require adjustment periodically.

The reality is, disc brakes are superior when it comes to stopping power. There are options. Gloves and eye protection are good ideas too. They can only go in one way. The brake shoe on the right is longer than the one on the left. The RH or longer shoe is the trailing shoe. The leading shoe is shorter. The backing plate has a raised surface.

The idea here is ensure the lube does not come in contact with the brake shoe lining surface. If it does, clean it with brake cleaner. First, lightly lubricate the threads. The easiest way to install them is to hook up the spring first with the shoes off the backing plate.

Then hook one end of the adjuster into one shoe. The adjuster wheel is closest to the park brake lever. The spring can only be installed one way so that it clears the wheel on the adjuster. The OTC spring installation tool is used to compress the spring while the nail which passes through the back end of the backing plate is held in place. A quick turn of the tool allows the nail to seat in the spring retainer. Note the retainer has two recesses designed to lock in the nail.

Examine the actuator lever closely. That hook is for the return spring more laterhowever it must be installed now. The spring seat installs in the actuator lever and is followed by the spring and retainer. The spring tool is used to compress the spring while the nail is how to install lighting under your kitchen cabinets in place.

Seat the nail in the retainer. This is where the small bumper spring is located. It simply slips into place. Once the other springs are in place, the bumper spring will be kept under tension. Note the spring at one end. It fits on the leading shoe side. The slot in the strut also engages the park brake lever. To install, spread the shoes apart slightly and insert the sprung end of the strut into the primary shoe.

Slide the shoes back together. Install the lower hooked end first. Next, with one end of the brake pliers handle inserted through the spring eye the OTC pliers work herestretch the spring out and over the tab on the pawl. The idea is to lever the spring body in place and guide it with your free hand gloves are definitely a good option! The actuator lever body is how to assemble drum brakes with a recess for the spring body.

The spring only installs one way. Insert the anchor guide over the anchor pin. Hook the actuator link to the pawl as shown here. If not, use the brake pliers to slide it over the pin.

Hook the brake shoe end in first, and then, using the pliers, work the spring over the anchor pin as shown here. The spring must what does shi de mean in chinese attached to the shoe first, but instead of hooking directly to the anchor pin, the opposite end attaches to the open end of the actuator link.

Dec 27, In this video, we will show you how to rebuild a GM /2 Inch Drum Brake. All of these parts and components can be purchased at and can b. Jun 20, Sign up for the Raybestos Brake STOP to access premium training videos from Raybestos: brakes have become a standard for many mode.

Last Updated: March 4, References. To create this article, 20 people, some anonymous, worked to edit and improve it over time. There are 9 references cited in this article, which can be found at the bottom of the page. This article has been viewed , times. Learn more Replacing drum brakes isn't difficult but it requires special tools and a little caution. In return, you save on hefty auto mechanics bills. This article will describe the general process, but you will still want to consult the manual for your car's particular make and model.

Then, spray the hub with a penetrating oil like PB Blaster and pull the drum off. Place the whole drum in a container and spray it with brake cleaner. Next, compare the old and new brake shoes to make sure they have holes in all the same places, then dismantle the brake and rebuild it with the new shoes. Keep reading to learn the specific order to disassemble the brake in! Did this summary help you?

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Related Articles. Article Summary. Put on an asbestos respirator. The work you're about to do involves finely-ground brake dust or asbestos dust, and breathing it can be extremely hazardous to your health. Get a mask that's designed for the job of filtering asbestos, not a simple paper one you might use in a shop.

Send the kids and pets away, too. Especially the kidsyou don't want them anywhere near this project, not even for a moment. Remove the hubcap and loosen the lug nuts. Block the front wheels with wheel chocks. Jack up the car and support it with jack stands. Never work on a car supported by a jack alone. Blocks of wood or bricks or even cinder blocks aren't suitable substitutes.

Spray the hub of the wheel with a penetrating oil such as PB Blaster. Grab the brake drum by the edges and pull it off. It may help to wiggle it a bit as you pull. It may be necessary to back off the brake adjuster to remove the drum. This is done through the brake adjustment hole in the drum or on the backing plate using a brake adjuster tool to turn the adjuster to loosen the brakes enough to remove the drum.

Note: some brake drums are held on with screws so you will need to remove those first. Once the drum is off take a look at it. It should be refaced or replaced if it is scored. Drum brakes have a bunch of springs and levers for the self-adjuster and parking brake. They are usually different colors. Take a picture with a digital camera or make a detailed drawing of where everything is before you take anything apart! Place the whole brake mechanism in a container and spray it with brake cleaner.

Doing this in a container will help keep the dust from becoming airborne. Remember: the dust from most brakes is asbestos , and you don't want to breathe it in. Wear a mask.

Compare the new brake shoes with the old ones. Make sure they have holes in all the same places. Some vehicles have two different shoes called a leading and trailing shoe. Make sure the brake shoes are the same width. Dismantle the brake. Detach the parking brake lever. Hold the shoe retaining pin from the back and remove the retainer springs. Spread the shoes apart from the top and disengage the shoes from the wheel cylinder pins.

Remove both shoes and the self-adjuster as one unit. Lay the old shoes on the ground next to the new ones. Sometimes the front and back shoes are different. The shoe with the shorter strip of lining usually goes towards the front. Carefully tip the tops of the shoes inward to loosen the tension on the self-adjuster spring.

Remove the self adjuster. Inspect and clean all brake parts to be reused and check for signs of damage or wear and replace as needed. It is recommended to replace all the springs with a new set.

The adjuster should be unscrewed, cleaned and lubed with anti-seize. Remove the spring and immediately hook it onto the new shoes exactly as you removed it.

Inspect the brake wheel cylinder for any signs of leakage and replace if needed. Rebuild the new brake. Screw the self adjuster back in. One side will be a left-hand thread. Place the self adjuster on the new shoes and spread the tops apart to tighten the spring. Put the shoes back in place and slip the retaining pins through the right holes.

Install the shoe retainer springs. Attach the shoes to the wheel cylinder pins. Reattach the parking brake lever. Install the return springs. Using a brake adjustment sizing tool, adjust the brakes to fit the brake drum. Check your new brakes with the photo you took earlier. If anything looks different start over. Put it all back together. Install lock screws in drum if equipped. Adjust the brakes through the drum or through the backing plate till a slight drag on the brake drum is felt.

Reinstall the tire. Check brake adjustment and readjust as needed to have a slight drag on the drum. Do not over tighten the brakes or they could lock up. Remove the jack stand. Lower the jack. Torque the lug nuts and reinstall the hub cap. Repeat on other side. Bleed out the brake system if any wheel cylinders were replaced. Road test the vehicle to verify brakes work correctly. If it bleeds off while you are stopped, you probably need a new or rebuilt master cylinder.

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