A broken or weak return spring can also cause the disc brake to drag. I changed everything except the hard lines, m/c, and booster, which were all replaced about five years prior. Thank you for the quick replies! If this valve is sticking or has become weak, it may be keeping pressure applied to the system. Just went through changing a bunch of stuff for the rear brakes, with Powerstop pads & rotors and Beck and Arnley shoes & hardware (springs, adjuster etc). Drum brakes all rebuilt, everything replaced, even the reservoir within the system (the thing the bleeder screw and lines connect to. Step 1: Access the drum brake adjustment star wheel. Drum Brakes Getting Hot on One Side - Reasons and Fixes While the above scenarios may not be the only things that can cause brake drag in a system, they are the most common causes and the ones that need to be addressed first. The shoe lands or bosses are an often overlooked item when looking forthe cause of a rear wheel lockup condition. Why Are My Brakes Smoking? - In The Garage with CarParts.com If you can replace the drums yourself, you can save a small amount of money. Check your parking brake cables while you are in there. The only component thatcould cause rear wheel lockup is the proportioning valve(s). residual valve is used to hold pressure against the springs in the drum. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. For a better experience, please enable JavaScript in your browser before proceeding. Adjusting Drum Brakes | Smart Car of America Forum link to Alternator Overcharging - Causes and Fixes, link to LS Head Bolt Torque Specs and Sequence. Drums Brakes Sticking After Brake Job | TTORA Forum One side is working perfectly, the other side not so much. - Rebuild the brakes twice (all new parts) - double checked with driver side, everything moves - New wheel cylinder, rods are moving (can push them back) - Checked restriction in brake line -> opening bleeder valve does not release the drag - Changed brake drums passenger and driver -> no changes, still drag on passenger side The cost to replace brake drums is typically between $200 and $250. Once the rotor is off, check the condition of the inner rotor parking brake pad surface. There are no suggestions because the search field is empty. Otherwise, the shoes will have too far of a distance to travel when making contact with the brake drum. This situation will then repeat for each rotor rotation. 2 Operate service brake, release, and wait for approx. Many cars have drum brakes in the back. Cause: Rear Wheel lockup or squatting has many causes. Usually the handbrake operates on the rear shoes by means of a mechanical linkage a cable and some levers and pivots. However, the brakes become louder as they wear. This approachallows you to find the problem in the shortest time. Remove the dust cover with a flat screwdriver. In a brake system with disc front and drum rear, there is a valve in the system known as a metering valve or hold-off valve. Then, drive the car to a safe location and confirm whether the brakes are properly functioning. SPONSORED LINKS Do you have the same problem? Check if this fits your vehicle. Take both wheels and drums off, and use one side to guide you on the other. Using the brake lathe and a dial indicator is onlyaccurate if the lathe and adapters are in the proper condition. If either one or both of these adjustmentsare done incorrectly it can result in the rear brakes being verysensitive. The parking brake counts on reliable brake drums to keep the vehicle secure when applied. All Rights Reserved. Using the screwdriver, gently pry out the rubber grommet that protects this access cover. This is most likely due to the pedal mechanism or booster pushrod keeping the master cylinder slightly applied, impeding the capability of the master cylinder to allow expanding fluid back into the reservoir as the fluid warms up. Turn the brake adjuster clockwise or anti-clockwise to feel where you need to turn it to. JavaScript is disabled. Additionally, aftermarket drums cost less than many OEM versions, unless you are upgrading to high-performance drums. Dragging Brakes If the brake noise you hear sounds like something is dragging under the vehicle, usually from the rear, although sometimes it can occur up front as well, then you need to take your car or truck in to be serviced.
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