Underhood: Mercedes-Benz Engine Oil Leaks, Underhood: Air Management For The FSI V6 And V8 Engines, Undercar: Oversized Tires And Transmissions. What I mean is a caliper is typically good for two to three decimal places depending on the brand and quality. Domestic vehicle systems, driveability diagnostic steps, and walking through the scan tool data PIDs to fix the car right the first time. Measuring the rotor thickness should be part of any brake job. This video is sponsored by Continental. You should consult the respective privacy policies of these third-party ad servers for more detailed information on their practices as well as for instructions about how to opt-out of certain practices. For a better experience, please enable JavaScript in your browser before proceeding. Undercar:GM Autoride Rear Suspension Diagnostics. Before using this site please read the site disclaimer. JavaScript is disabled. Some rotor manufacturers will even cut corners by not meeting the nominal or new rotor thickness requirements in order to save a buck. In the industry, this is called the round and heavy philosophy. First find the lowest point in the rotor and set the dial indicator to zero. Turbo performance can only be impaired by mechanical damage or debris. Sand it down to the minimum viable thickness and then place it against the rotor to see if it's in the ball park. MBWorld Featured Car of the Month Contest, E55, E63, E53, E43 AMGs (W210, W211, W212, W213), CLS63, CLS55, CLS53 AMG (C219, C218, C257), S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222), S63 AMG 4MATIC Coupe, S65 AMG Coupe (C217), Convert. Bled but still messed up. If the technician or counterman is only going by the price they see on the screen, it will be difficult to pick the best rotor. Sooner rather than later, you will find a vehicle that will not be magically fixed by a new set of rotors. 93 Fzj80 new aisin mc. Employees of Babcox Media, Tomorrows Technician, sponsors and advertisers are not eligible to enter. In some cases with excessive runout, a new rotor should be machined to match the vehicle. Its impossible to tell how much life is left on the brake rotors by simply looking at it. How to select the right replacement part for the job. A runout of more than 0.005 (0.125 mm) at the bearing flange cannot be corrected by the use of a shim. You may think you are saving 10 minutes by not having to drag out a dial indicator and a micrometer, but your chance for comebacks can dramatically increase. The reality is that if you can master some very general skills, ADAS is not rocket science. rotors discs However, with a composite rotor or one with hard spots, the depth should be reduced, likely below 0.010 per side for a quality finish. ARB fridge is the best mod I ever did! You should check bearing flange runout after friction surface runout. Which things are important to check when measuring rotor thickness to determine if they need replaced? This is when it is permissible to machine a new rotor with an on-the-car brake lathe. Some rotor manufacturers will even cut corners by not meeting the nominal or new rotor thickness requirements in order to save a buck. With all of the technical advancements in cars, can you even consider working under the proverbial shade tree? Measure your rotors before and after machining to be sure they meet the required minimum thickness specification. Measuring the rotor thickness should be part of any brake job. This is the total indicated runout. Hydraulic suspension bushings were developed in response to specific customer desires: quieter and better-handling vehicles. In some cases with excessive runout, a new rotor should be machined to match the vehicle. Measuring rotor thickness WITHOUT taking off wheel? The needle of the dial indicator should be perpendicular to the rotor. In order to remove this much material, it is essential to have sharp bits. This could be due in part to bearing design, construction, corrosion buildup, and/or replacement parts selection. However, some aftermarket rotor manufacturers will take the OE design and make it better in order to exceed customer expectations. You are using an out of date browser. Measurement from inside edge of mounting hole to inside edge of bolt hole. This is why it is critical to measure thickness and runout in a brake rotor and wheel flange even if new rotors are going to be installed. I am not running 100 pads so I don't know. However, this myth creates more comebacks that it solves. If your rotor needs to be cut or has worn passed this thickness, youll need new rotors. After the rotor is resurfaced or a new rotor is installed, the rotor should be measured for runout when it is installed on the vehicle as a quality control method. https://www.google.com/policies/technologies/ads/. This webinar will help you effectively communicate a vehicle diagnosis to the service advisor. Not sure the jobber even had a rotor on the shelf but I put a set of pads on it, maybe twice and bought a rotor which I had on the shelf, at about 140 on the clock used it with a new set of pads. Using an on-the-car lathe can help to reduce runout on new rotors. After the rotor is installed, verify that the runout is below specifications. In order to remove this much material, it is essential to have sharp bits. Looking to purchase something inexpensive to measure brake rotor thickness. Make your own gauge using old plywood from reclaimed kitchen cupboards. Sponsored by ACDelco. 
Which instrument is used to measure thickness? Copyright 2022 Babcox Media Inc. All rights reserved, I-CAR Announces Initiative To Address Tech Shortage, Diagnosing ABS/ESC False Activation Notices, Worn Suspensions Reduce Braking Efficiency, Safety (Video), Best Practices for Turbo Services (VIDEO), Modern Cooling System Diagnostics: Pumps, Fans and Thermostats, What Vehicles Need for Preventative Maintenance in 2022, Milwaukee Tool Releases 2022 Heated Gear Lineup, Milwaukee Introduces New Stick Light To Redlithium USB Line-up, PRT Offers Complete Struts For Honda CR-V 2019, The July Digital Edition Is Ready To Read Right Now, Tendeco's John Lussier Sits Down with AMN Drivetime (Podcast), Teamwork, Dream Work and Shopping For Great Employees, Transtars Neil Sethi, from Healthcare to Hard Parts (Podcast), Appealing To Industry To Answer AAPEX Travel Prayers, Women At The Wheel Podcast, Ep. Presenting your customer with inspection results and benefits of replacement will help sell the job. For every brake job, you should always measure for runout (rotor and flange) and the dimensions of the rotor before brake service is performed. The needle of the dial indicator should be perpendicular to the rotor. This is the total indicated runout. How To Answer Customer Ride Control Questions, Smooth Roads Ahead: Making Wheel Bearing Jobs Work for Your Shop. What thickness should I replace my rotors? Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery, George's 80 Series Land Cruiser and Nissan MQ Patrol - http://www.george4wd.taskled.com. First find the lowest point in the rotor and set the dial indicator to zero. JavaScript is disabled. Since this isnt very precise, try using a digital caliper on a single sheet instead. These comebacks often start with blaming the new pads, and end with the customer having to return a second or third time until someone pulls out a dial indicator and micrometer. 458BXR Automotive Disc Brake Micrometer 67536 Best used for measuring the depth of wear grooves in disc of brake systems. What is the requirement of the rotors to know if they are in or out of specification? Runout greater than .005 (.001 depending on the rotor or flange diameter) is a sign that the flange, rotor and/or bearing should be replaced. everything else is a "hey look at me!" The friction material on a new brake pad is typically about 8-12 millimeters thick, and those that are ready for replacement are worn down to about 3 mm. Sometimes is the rust bels the inner fin area rusts the surfaces from the backside out or even the fins rust su badly that the rotor collapses from the pressure of the caliper. Yes but then you would create another 27 pages of posts talking about it. The only real way to measure is with a profilometer that measures the roughness average. Those lips are nasty rusty rough affairs. However, manufacturers provide minimum thicknesses for their rotors. Single-speed lathes are set at the slower speed of the largest application they are designed to cut. Applying logical methods to streamline the diagnostic process on domestic applications. With a little observation a guy can look at a rotor and tell if its worthy of a set of pads. What is the standard thickness of brake rotors? If its thinner than this, consider getting a replacement soon. Even if you use new rotors, your chance of a pulsation comeback could be greater than if you left the old rotors on the vehicle. Measuring the rotor thickness should be part of any brake job. Poor rotor finish can lead to noise. When machining a rotor, you have two primary goals: provide a smooth surface finish for the pads and provide a true surface finish. Sometimes rotor wear can be seen with the naked eye, but by this juncture, the rotor will be unsafe. Air Management For The FSI V6 And V8 Engines. The winners will be randomly selected from all correct entries each week. They automatically receive your IP address when this occurs. If you can see a difference in plate thickness, its a sign that the hardware and caliper need replacement. Google, as a third party vendor, uses cookies to serve ads on MotoFaction.org. Podcast: T2iQ With The Rustbelt Mechanic - What's Next? When machining a rotor, you have two primary goals: provide a smooth surface finish for the pads and provide a true surface finish. Measurements should be taken a quarter inch from the edge. In addition to Tomorrows Tech's massive library of printed and video resources providing comprehensive educational programming, from collision repair to engine building to updated information on tools and scanners, to the latest in TPMS and ADAS technology, we offer technical articles and training videos that provide in-depth explanations of systems and procedures for nearly every segment of the automotive industry. 
A larger diameter rotor will need to turn slower than a small diameter one. rotor disc brake grease flush hub fig fill mazda , Visible Cracks. I found one at a yard sale years ago, a retired machinist, got mine for $1. The average rotor diameter in 2020 was about 125 meters (410 feet)longer than a football field. Learn how to streamline the diagnostic process for driveability issues. But if I need to justify I record what my mm ruler tells me those pads are. Some people think that installing new rotors eliminates the possibility of a comeback; however, this myth creates more comebacks than it solves. Generally speaking, the DTV should not vary more than .001. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. This can be the best sales tool and the best defense against a customer claiming that you replaced their rotors unnecessarily. Runout in the hub and new rotor can stack up to cause Disc Thickness Variation (DTV) within a few thousand miles. Brake Pad Boss All Rights Reserved. If a digital measurement isnt an option, use a manual micrometer or caliper for more accuracy. Even if it looks like it is below specifications, it should be measured and documented on the repair order. Measurements should be taken a quarter inch from the edge. But I don't remember the rotor. Yeah brakes are one of those things that are deceptively easy on the 80s. Do Not Sell My Personal Information -, By logging into your account, you agree to our, Currently Active Users Viewing This Thread: 1, The following errors occurred with your submission, 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe. friction drum clutch specs Cutting too fast will reduce the cut quality and possibly create chatter. The needle of the dial indicator should be perpendicular to the rotor. How do you measure brake shoe lining? Minimum thickness was to insure,,, in theory anyway that it would last thru another set of pads or shoes back in the day. Flange runout can be corrected with tapered shims to address a runout of 0.003 (0.075 mm) to 0.009 (0.230 mm). Multiplying this number by 10 will convert the unit of measurement to millimeters and tell you how long your object is in millimeters up to this point. Bill Babcox and John Lussier discuss supply chain challenges, the value of OE heritage, international business and more. I can't see ever going to the dealer, or a mechanic, to do them. The needle of the dial indicator should be perpendicular to the rotor. You may think that installing new rotors eliminates the possibility of a comeback. A runout of more than 0.005 (0.125 mm) at the bearing flange cannot be corrected by the use of a shim.
(A217), CL55 AMG, CL65 AMG, CL63 AMG (C215, C216), AMG GT: GT, GTS, GTC, GTR, GT-4door (C190 / R190), GLC63s, GLC63, GLC43 AMG SUV and Coupe (X253, C253), GLE63s, GLE63, GLE53 AMG SUV & Coupe (W166, W167), MB Coupes & Cabriolets Vendor Classifieds, Mercedes-Benz SUVs, Trucks, Vans, Diesels, Other, MB SUVs, Trucks, Vans, Diesels Vendor Classfieds, Classic, Vintage Mercedes-Benz Vehicles, Other Cars, Classic, Vintage MB Vehicles Vendor Classifieds, General Discussion of Mercedes-Benz Classics.
Which instrument is used to measure thickness? Copyright 2022 Babcox Media Inc. All rights reserved, I-CAR Announces Initiative To Address Tech Shortage, Diagnosing ABS/ESC False Activation Notices, Worn Suspensions Reduce Braking Efficiency, Safety (Video), Best Practices for Turbo Services (VIDEO), Modern Cooling System Diagnostics: Pumps, Fans and Thermostats, What Vehicles Need for Preventative Maintenance in 2022, Milwaukee Tool Releases 2022 Heated Gear Lineup, Milwaukee Introduces New Stick Light To Redlithium USB Line-up, PRT Offers Complete Struts For Honda CR-V 2019, The July Digital Edition Is Ready To Read Right Now, Tendeco's John Lussier Sits Down with AMN Drivetime (Podcast), Teamwork, Dream Work and Shopping For Great Employees, Transtars Neil Sethi, from Healthcare to Hard Parts (Podcast), Appealing To Industry To Answer AAPEX Travel Prayers, Women At The Wheel Podcast, Ep. Presenting your customer with inspection results and benefits of replacement will help sell the job. For every brake job, you should always measure for runout (rotor and flange) and the dimensions of the rotor before brake service is performed. The needle of the dial indicator should be perpendicular to the rotor. This is the total indicated runout. How To Answer Customer Ride Control Questions, Smooth Roads Ahead: Making Wheel Bearing Jobs Work for Your Shop. What thickness should I replace my rotors? Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery, George's 80 Series Land Cruiser and Nissan MQ Patrol - http://www.george4wd.taskled.com. First find the lowest point in the rotor and set the dial indicator to zero. JavaScript is disabled. Since this isnt very precise, try using a digital caliper on a single sheet instead. These comebacks often start with blaming the new pads, and end with the customer having to return a second or third time until someone pulls out a dial indicator and micrometer. 458BXR Automotive Disc Brake Micrometer 67536 Best used for measuring the depth of wear grooves in disc of brake systems. What is the requirement of the rotors to know if they are in or out of specification? Runout greater than .005 (.001 depending on the rotor or flange diameter) is a sign that the flange, rotor and/or bearing should be replaced. everything else is a "hey look at me!" The friction material on a new brake pad is typically about 8-12 millimeters thick, and those that are ready for replacement are worn down to about 3 mm. Sometimes is the rust bels the inner fin area rusts the surfaces from the backside out or even the fins rust su badly that the rotor collapses from the pressure of the caliper. Yes but then you would create another 27 pages of posts talking about it. The only real way to measure is with a profilometer that measures the roughness average. Those lips are nasty rusty rough affairs. However, manufacturers provide minimum thicknesses for their rotors. Single-speed lathes are set at the slower speed of the largest application they are designed to cut. Applying logical methods to streamline the diagnostic process on domestic applications. With a little observation a guy can look at a rotor and tell if its worthy of a set of pads. What is the standard thickness of brake rotors? If its thinner than this, consider getting a replacement soon. Even if you use new rotors, your chance of a pulsation comeback could be greater than if you left the old rotors on the vehicle. Measuring the rotor thickness should be part of any brake job. Poor rotor finish can lead to noise. When machining a rotor, you have two primary goals: provide a smooth surface finish for the pads and provide a true surface finish. Sometimes rotor wear can be seen with the naked eye, but by this juncture, the rotor will be unsafe. Air Management For The FSI V6 And V8 Engines. The winners will be randomly selected from all correct entries each week. They automatically receive your IP address when this occurs. If you can see a difference in plate thickness, its a sign that the hardware and caliper need replacement. Google, as a third party vendor, uses cookies to serve ads on MotoFaction.org. Podcast: T2iQ With The Rustbelt Mechanic - What's Next? When machining a rotor, you have two primary goals: provide a smooth surface finish for the pads and provide a true surface finish. Measurements should be taken a quarter inch from the edge. In addition to Tomorrows Tech's massive library of printed and video resources providing comprehensive educational programming, from collision repair to engine building to updated information on tools and scanners, to the latest in TPMS and ADAS technology, we offer technical articles and training videos that provide in-depth explanations of systems and procedures for nearly every segment of the automotive industry. A larger diameter rotor will need to turn slower than a small diameter one. rotor disc brake grease flush hub fig fill mazda , Visible Cracks. I found one at a yard sale years ago, a retired machinist, got mine for $1. The average rotor diameter in 2020 was about 125 meters (410 feet)longer than a football field. Learn how to streamline the diagnostic process for driveability issues. But if I need to justify I record what my mm ruler tells me those pads are. Some people think that installing new rotors eliminates the possibility of a comeback; however, this myth creates more comebacks than it solves. Generally speaking, the DTV should not vary more than .001. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. This can be the best sales tool and the best defense against a customer claiming that you replaced their rotors unnecessarily. Runout in the hub and new rotor can stack up to cause Disc Thickness Variation (DTV) within a few thousand miles. Brake Pad Boss All Rights Reserved. If a digital measurement isnt an option, use a manual micrometer or caliper for more accuracy. Even if it looks like it is below specifications, it should be measured and documented on the repair order. Measurements should be taken a quarter inch from the edge. But I don't remember the rotor. Yeah brakes are one of those things that are deceptively easy on the 80s. Do Not Sell My Personal Information -, By logging into your account, you agree to our, Currently Active Users Viewing This Thread: 1, The following errors occurred with your submission, 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe. friction drum clutch specs Cutting too fast will reduce the cut quality and possibly create chatter. The needle of the dial indicator should be perpendicular to the rotor. How do you measure brake shoe lining? Minimum thickness was to insure,,, in theory anyway that it would last thru another set of pads or shoes back in the day. Flange runout can be corrected with tapered shims to address a runout of 0.003 (0.075 mm) to 0.009 (0.230 mm). Multiplying this number by 10 will convert the unit of measurement to millimeters and tell you how long your object is in millimeters up to this point. Bill Babcox and John Lussier discuss supply chain challenges, the value of OE heritage, international business and more. I can't see ever going to the dealer, or a mechanic, to do them. The needle of the dial indicator should be perpendicular to the rotor. You may think that installing new rotors eliminates the possibility of a comeback. A runout of more than 0.005 (0.125 mm) at the bearing flange cannot be corrected by the use of a shim.
(A217), CL55 AMG, CL65 AMG, CL63 AMG (C215, C216), AMG GT: GT, GTS, GTC, GTR, GT-4door (C190 / R190), GLC63s, GLC63, GLC43 AMG SUV and Coupe (X253, C253), GLE63s, GLE63, GLE53 AMG SUV & Coupe (W166, W167), MB Coupes & Cabriolets Vendor Classifieds, Mercedes-Benz SUVs, Trucks, Vans, Diesels, Other, MB SUVs, Trucks, Vans, Diesels Vendor Classfieds, Classic, Vintage Mercedes-Benz Vehicles, Other Cars, Classic, Vintage MB Vehicles Vendor Classifieds, General Discussion of Mercedes-Benz Classics.
