Home » How To Change Drum Brakes | Autoblog Wrenched

How To Change Drum Brakes | Autoblog Wrenched

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The brakes in your automotive are one factor you do not wish to postpone fixing. Fortunately, with a bit assist from Larry Kosilla, you are able to do it your self.

Watch all of our Autoblog Wrenched movies for extra recommendations on methods to diagnose, repair and modify automobiles from skilled detailer Larry Kosilla. Whilst you’re at it, try Larry’s different automotive cleansing and upkeep video collection Autoblog Particulars!

Supplies Used:

Directions (Video Transcript):

[00:00:00] [Larry] Drum brakes have been the primary era of braking programs in autos from the early 1900s all the way in which as much as the Eighties and 90s. Most older autos nonetheless on the street right now solely have drum brakes on the rear of the automotive. Listed here are the instruments you will have to do it your self. Drum substitute {hardware} equipment, footwear, pliers, screwdriver, Spring set, wire brush, needlenose pliers, protecting eyewear, and naturally, brake clear. I am Larry Kosilla, professional detailer and coach for the final 15 years.

[00:00:30] However relating to what’s below the hood, I am the coed. Observe me as specialists train me methods to diagnose, repair, and modify automobiles on Autoblog’s Wrenched. – Alright, so what is the distinction between disc brakes and these right here, drum brakes. – Properly the disc brake truly has two brake pads that squeeze collectively hydraulically by a caliper and create the friction to sluggish the automotive down. – Okay. – A drum brake has two footwear which sit with springs on the within of this drum, and thru a wheel cylinder, hydraulically develop and trigger the friction

[00:01:00] on the within of this drum. – [Larry] So a caliper squeezes, and a drum type of pushes out. – [Spencer] Precisely. – [Larry] Okay. Alright effectively I’ve completed disc brakes earlier than and people went fairly effectively. Is that this the identical type of concept? – As soon as I present ya how, you’ll do it. – [Larry] It is vital to grasp that this can be a difficult job that has many various set-ups distinctive to every respective car, so consider, your particular drum brakes might not precisely resemble those present right here, and also you would possibly want extra info or instruments

[00:01:30] particular to your automotive to do the job correctly. Keep in mind, our aim with this video is to present you an concept of what is concerned in a lot of these tasks must you select to exchange the brakes your self. In the event you’re uncomfortable, merely rent knowledgeable mechanic. First, we take away the drum with two bolts that, as soon as screwed in evenly, will slowly push the drum away from brake meeting. In any other case, just a few hits with a sledgehammer on all sides will assist dislodge the rusty drum, revealing the pads beneath. For novices like myself,

[00:02:00] Spencer prompt I take a mobile phone image of the brake meeting after I pull the drum off and particularly earlier than I begin pulling the footwear aside. That is primarily disassembling after which reassembling an enormous jigsaw puzzle, so an image is price a thousand phrases to a novice. There are a variety of particular instruments that make your life straightforward when eradicating drum brakes, however most may be completed along with your commonplace needlenose pliers. Start by eradicating the highest return spring with needlenose, or the particular spring pliers discovered at any auto retailer.

[00:02:30] This spring is used to tug the brake footwear away from the drum when the brake pedal is launched. Subsequent take away the spring and pin that holds the brake shoe to the backing plate by compressing the small spring and twisting to unlock the pin holding it in place. Then take away the decrease spring, and the star wheel adjuster. One aspect must be eliminated at this level, and each bit frequently positioned on the ground or bench within the actual place it was eliminated that can assist you reassemble.

[00:03:00] Now take away the opposite shoe’s spring and pin holding it to the backing plate to permit you the flexibleness to take away the emergency brake cable, which may be tough at instances. The emergency brake meeting is often hooked up to just one aspect of the brake shoe. Generally the entrance shoe, or typically the rear shoe, relying on the actual automotive. Both means, you will most probably have to reuse this {hardware}, so be additional cautious when disassembling these parts. We’ll come again to this shortly, however let’s take a better take a look at the elements. Discover the shoe closest to the entrance of the car

[00:03:30] is shorter in size than the shoe closest to the rear. That is why it may be useful to solely do one brake job at a time, and at all times evaluate the previous shoe with the brand new shoe to verify they’re the fitting half earlier than you go any additional. Proceed to tug out all the brand new elements from the auto retailer and lay them out so as and do a fast stock. As soon as all of the elements have been accounted for, clear the previous elements that you’re going to be reusing with brake clear, together with the brand new drum, which comes from the manufacturing unit with a skinny protecting coating for transport

[00:04:00] that must be eliminated with brake clear previous to putting in. Use a wire brush to wash up the brake shoe’s contact factors with the backing plate. There are usually three spots on all sides. Right here, right here, and right here. As soon as brushed clear, add a lightweight dab of excessive temp grease to every spot. Now swap out the previous elements with the brand new substitute elements in your bench diagram, and double-check you could have all of the items in your equipment. Reinstall the previous emergency brake arm on the brand new shoe, however be very positive it is the right size shoe.

[00:04:30] Hold referring again to your image to double-check what else must be added to the brand new shoe in your specific drum brake set-up. Reinstall the emergency brake spring to the holder and safe the clip. Reattach the e-brake cable, and slide the pin from the again aspect by the backing plate and the shoe, and compress and twist the spring over the pin till it catches. This spring and pin is what holds the shoe in place.

[00:05:00] Now, reinstall the star wheel adjuster, however be certain it is clear, then lubricate it, so it strikes out and in freely. The adjuster threads are exhibiting, or in different phrases, have been prolonged as a result of put on on the previous shoe. Nevertheless, as a result of we’re changing with new or thicker footwear, we have now to string again the star wheel to reset for the brand new footwear, and to permit the drum to suit over them with out touching. Subsequent, give attention to the decrease spring and high spring, then set up the spring and pin like we did on the opposite shoe.

[00:05:30] Earlier than we put the drum again on, rapidly wire brush the hub face and add a lightweight dab of excessive temp grease to make sure the drum lays flat and does not wobble sooner or later. Afterwards, Spencer has me faucet the footwear to verify all the pieces is related and centered to ensure that the drum to take a seat correctly. Now set up the brand new drum and hand-tighten just a few bolts to have it full seated. We’ll retorque the bolts correctly after we reattach the wheel.

[00:06:00] Spin the drum to get a really feel for the way free or tight the star wheel adjuster could be. At this level, it is regular or okay to have the drum spin freely. Nevertheless, a brake adjustment have to be completed with a screwdriver or a brake adjustment instrument that matches in a small gap within the again aspect of the brake meeting. The aim right here is to spin the star wheel till the shoe is prolonged sufficient to have the drum spin, however has a little bit of drag when it is doing it. Once you’re all set, put the wheel again on and make sure you torque them to your producer’s prompt foot-pounds.

[00:06:30] As I am positive you’ve got seen by now, changing your brake footwear and {hardware} isn’t any easy activity. Every brake meeting could also be barely totally different from the one proven right here, however use this video as a reference for those who select to tackle this mission. In the event you’re uncomfortable, search knowledgeable mechanic. For extra how-to automotive restore movies, go to Autoblog.com/wrenched. I am Larry Kosilla from AmmoNYC.com. As at all times, thanks for watching.

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