drum brakes

Download Drum brakes

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  • 1. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. REPLACING A REAR BRAKE KIT - 1 hammer - 1 hexagon deep socket and a T wrench - 1 set plain slot screwdrivers - 1 brake cleaner aerosol - bent nose pliers - 1 steel brush - 1 flare spanner 45 minutes / wheel EQUIPMENT DIFFICULTYTIME A drum brake system differs from a disc brake system. Instead of brake pads, which are set into the brake calliper, drum brakes have brake shoes. Where the brake pads on disc brakes are pressed against a disc when youre braking, the brake shoes are pressed against a brake drum. The generated resistance is then used to slow down the vehicle. Drum brakes feature predominantly on smaller cars. DRUM BRAKES On Mister-Auto.co.uk youll find a large variety of brake kit brands for your car. Youve no doubt heard of the biggest brands such as Bosch, Mintex, Ferodo or Bendix. Drum brakes are essential car parts for your safety on the road. We therefore recommend you always choose a quality brand. Mister- Autos discount prices allow you to save considerably on your brake parts, so please try not to cut your budget. A brake drum kit will cost you between 50 and 200, depending on the make of your car. Before ordering, it is important to check a couple of things on your vehicle. In fact, Mister-Auto offers you a large variety of different brands for your car but not all will fit. To avoid making a mistake in your choice, we recommend you check all sides of your brake shoes. Take a close look at the shape of the wheel brake cylinder as well. HOW TO CHOOSE DRUM BRAKE PARTS? TIPS FROM MISTER-AUTO Never blow on drum brake parts when they are disassembled. To clean any of the parts, always use a proper cleaning spray. For a long time drum brake parts have contained asbestos.Although that has now changed, it is possible that your drum brakes still contain this dangerous substance, especially if you drive an older car. If besides the brake shoes, youre replacing the drum as well, remember to give it a clean by pulling off the paraffin layer and thoroughly scratch the inside of the drum with a piece of glass paper. PLEASE NOTE: for a brake drum replacement, the braking system needs to be bled. If youve never bled your brakes before, we strongly recommend you ask a professional mechanic to do it for you.

2. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. DRUM BRAKES Dismount a wheel. Remove the drum shaped metal covering that is fixed in the middle of the brake drum. Its best to remove this part with a screwdriver or a small chisel. Gently tap onto the tool to free the covering. Be careful not to damage it because these covers are rarely included in a drum brake kit. Free the main nut with a hexagon deep socket and a T wrench. Study the inside drum brake Remove the metal covering Step 1 2 3 WHEN TO CHANGE YOUR DRUM BRAKES? CHANGING YOUR DRUM BRAKES IN 22 EASY STEPS Most car manufacturers will advise you to check your drum brakes every 18 500 miles. Drum brake parts only need replacing every 62 100 to 93 200 miles. There are different indications to worn drum brakes: You feel jolting movements in the brake pedal. Yo u h e a r scra t ch in g o r squeaking noises. There is unusual play in the hand brake lever when pulling it up (if you count more than six teeth underneath, youll need to clean the brake shoes and drums.) The brake lining is too worn. The brake lining is stuck against the wheel brake cylinder. The return springs are faulty. The drum is not round anymore but oval. Dismount a wheel Step Step 3. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. DRUM BRAKES Take a moment to study the location of all the elements and take a picture if necessary to help you putting everything back in the right place. Put a bucket underneath the wheel and thoroughly clean all the parts with brake cleaner. Prepare the new brake shoes. Its best to buy a drum brake kit, because the brake shoes are already assembled and therefore easier to insert into the brake drum. Remove the retainer pins youll find on the brake shoes. Use bent nose pliers to release the pin by turning a quarter of a turn. 5 6 7 8 Release the hand brake. The drum will fall out by itself. If the drum show a lot of wear signs, wedge two screwdrivers between the two halves of the brake drum and use them as levers to push the top part out. If necessary you can gently tap onto the brake drum to make sure the brake lining comes loose of the drum. 4 Look at the place of every singular part Remove the retainer pins The brake drum and shoes Step Step Step Step Step 4. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. DRUM BRAKES Scratch the hand brake cable with some brake cleaner. Pay particular attention to the wires and the teeth. Dont forget to grease them. Dismount the hydraulic connection youll find behind the seat. It can be disconnected by unscrewing a nut. 11 12 Remove the hand brake cable. Take the return spring that surrounds the cable to the side with a spanner. Then free it. 10 Remove the retainer pins Brake drum without hand brake cable Clean the hand brake cable Clean hand brake cable Remove the hand brake cable Remove the return springs with a spanner. You can also take them off in one go by pulling on the brake shoes. 9 Remove the brake shoes Remove the brake shoes Step Step Step Step 5. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. DRUM BRAKES Install the new wheel brake cylinder and connect the hydraulic wire. Insert the hand brake cable into the new brake shoes. 15 16 Thoroughly clean the parts youve just dismounted with some brake cleaning spray. 14 Replace the cylinder Grease the hub Replace the hand brake cable Install the brake shoes Change the brake shoes Remove the wheel brake cylinder via the fitting points also located behind the brake drum. The brake drum cylinder is kept in place by two studs. 13 Unscrew the wheel brake cylinder Remove the wheel brake cylinder Disconnect the hydraulic hose Step Step Step Step 6. /// Mister-Autos DIY Guides www.mister-auto.co.uk - 0844 338 00 21 *Please note: free and informative document for which Mister-Auto does not accept any responsibility or liability. DRUM BRAKES Assemble the drum after having cleaned it. Pull up and release your hand brake about 10 times to ensure it works properly. Please note: the middle nut must be tightened according to the manufacturer instructions. Reattach the wheel. Remember to take about 180 miles to allow the parts to set. In case you notice considerable wear to the inside of the brake drum, we recommend you change this part as well to ensure the brake linings will be properly pressed against it. Bleed the braking system (see our article Bleeding the Brakes). 19 20 21 22 Check whether all the nuts and bolts have been tightened and there are no left-over parts. 18 Assemble the drum All done Mount all the parts onto the seat and fit the retainer pins. Turn them a quarter of a turn. Have someone else assist you at this point. 17 Fit the retainer pins Brake shoes with retainer pins Retainer pin Step Step Step Step Step Step

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