{"id":11123,"date":"2021-05-15T11:55:00","date_gmt":"2021-05-15T09:55:00","guid":{"rendered":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/?p=11123"},"modified":"2021-05-15T11:55:00","modified_gmt":"2021-05-15T09:55:00","slug":"air-disc-brakes","status":"publish","type":"post","link":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/2021\/05\/15\/air-disc-brakes\/","title":{"rendered":"Air disc brakes speed up TCO savings"},"content":{"rendered":"
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In part one<\/a> of a two-part series, we looked at how fleets can break even or save money by switching to air disc brakes (ADBs), while also benefiting from better stopping performance. Another big reason is found in the maintenance shop. Or rather, by how more durable brakes keep trucks out of the shop.<\/p>\n

\u201cWe\u2019re seeing longer pad life and reduced maintenance intervals, and the time to change pads is considerably less than the equivalent time on a drum brake,\u201d said Robert Brazeau, director of Meritor\u2019s North American brake business. \u201cAll those things reduce the [total cost of ownership] for fleets.\u201d<\/p>\n

Meritor\u2019s ADBs are completely sealed and pre-lubed, making change-outs quick and easy.<\/p>\n

\u201cThere\u2019s virtually no maintenance other than their visual observations,\u201d Kay said. \u201cThe pads are very simple to take out.\u201d<\/p>\n

He explained that a technician only needs to rotate the adjusting bolt on the back of the caliper with a wrench to open the piston. Then they would remove the hold-down bolt to slide off the pads. Once the new pads are on, adjustments are made, and the wheel is reattached and bolted on.<\/p>\n

\"Meritor'sMeritor’s EX+LS air disc brakes have Electronic Pad Wear Warning Indicators to tell fleets when it’s time to make a change.<\/span>Credit: John Hitch | FleetOwner<\/span><\/span><\/p>\n

Bendix stated its ADB pads last 600,000 miles, or 1.5 times longer than the drum brake lining. McComsey said Bendix ADB rotors \u201clast roughly two to three times the brake changes,\u201d and changing the pads takes a quarter of the time versus replacing drum brake lining.<\/p>\n

More savings are enjoyed because the ADBs have an internal adjustment mechanism, so they aren\u2019t as susceptible to \u201cout-of-adjustment\u201d Compliance, Safety, Accountability (CSA) violations, or rust jacking.<\/p>\n

Drum brakes don\u2019t cost as much on the front end, though the Bendix brake calculator indicates fleets may spend just a bit more on ADBs to gain roughly 11% better stopping power. Spec\u2019ing ADBs can increase upfront costs by an additional $2,500, though fleets can save $1,200 or more over the life of the vehicle compared to drums. Sometimes that ROI could be closer to zero, McComsey theorized. \u201cMaybe it\u2019s breaking even, but if I\u2019m breaking even with a drum brake, I\u2019m getting all the safety benefits along with it,\u201d he said.<\/p>\n

Another important point is that in the case of a crash, having brakes proven to have superior stopping power shows the fleet takes safety seriously, leaving it less open to a nuclear verdict and potentially many millions of dollars.<\/p>\n

\u201cIf anyone\u2019s looking at an accident, the first thing [plaintiff\u2019s lawyers] look at is, \u2018Was the accident preventable?\u2019\u201d McComsey said. \u201cThey\u2019ll look at what the practices of the fleet might be, what kind of considerations they take when spec\u2019ing a vehicle. Did they opt out of a safety system and go to something lesser to reduce the total vehicle cost? That could be looked at as a risk that the company might be taking.\u201d<\/p>\n

The larger the fleet, the more valuable ADBs become. Ryder manages a fleet size of about 240,000 vehicles, from light to heavy duty. Ryder\u2019s Director of Field Maintenance Larry Olson, who oversees everything between the Mississippi River and Hawaii, is in charge of about 60,000 vehicles. He named brakes as the third highest equipment cost after tires and aftertreatment systems.<\/p>\n

Ryder\u2019s size and scope disallow a one-size-fits-all approach, and Olson said his team must remain flexible, as brake products are always evolving. And because of terrain and duty cycles, not all trucks will perform the same. Olson said Hawaii brake costs are the most expensive as all routes are local, meaning more frequent stops.<\/p>\n

\u201cWe’re evaluating those systems every year, taking a look at the cost overall of not only the brake pads but the calipers and the life of the rotors,\u201d Olson said. \u201cAll of those things get looked at individually and broken down, so we can see which manufacturer has the best performance.\u201d<\/p>\n

This immediately helps Ryder and because of Ryder\u2019s size and leverage has the added effect of making original equipment suppliers step up their game.<\/p>\n

\u201cThey realize that they need to improve their product if they’re going to continue to do business with us,\u201d Olson said, noting that ADBs have come a long way in the last several years.<\/p>\n

\u201cThe disc brake systems have gone through at least four or five versions already,\u201d he said. \u201cThe first year, quite frankly, was pretty rough. We found some of those disc pads had very poor wear. They’ve been out for a while, and we’ve got a lot of our training implemented. We’re just seeing that products are getting better.\u201d<\/p>\n

Maintaining air disc brakes has gotten more complex as trucks add more ADAS-related electronics that connect to the brakes, Olson added.<\/p>\n

\u201cIt used to be somebody working in a garage could kind of figure things out,\u201d Olson said. \u201cAnd now you can’t figure out much of anything unless you have a computer and the troubleshooting and diagnostic training in order to determine what’s really going on in the vehicle.\u201d<\/p>\n

Technicians who work on Bendix brakes and ADAS, for example, need a Noregon tool called the ACom PRO<\/a>.<\/p>\n

And while all the advances help make the truck safer, the flow of innovation can become bottlenecked.<\/p>\n

\u201cWith all the technology changes that have been coming every year, tracking those changes and verifying the component performance have been bigger challenges for us, because of the constant changes of each year model,\u201d Olson noted.<\/p>\n

The maintenance side can also help steer change in the drivers. Noticing excessive wear on brakes and pulling fault codes can help identify unusual driver behavior, which a fleet trainer can help coach the driver on.<\/p>\n

\u201cThings start to stand out [in] your cost per mile or monthly costs on the vehicle fairly quickly,\u201d Olson said. \u201c[And] you can identify that, especially when you have a fleet of trucks that run in a similar area.\u201d<\/p>\n

Telematics hard braking data and cameras can also help provide a more complete picture.<\/p>\n

Looking forward, ADAS and higher levels of autonomy will help maintenance leaders like Olson remove much of the uncertainty surrounding brake wear and costs.<\/p>\n

\u201cThose are systems that are going to actually reduce both physical damage and injury to people on that highway as well as potentially control costs even more so, because we have something more finite controlling the vehicle,\u201d Olson said.<\/p>\n

\u201cOver time, I think you will see that some of these costs will really fall into line and be highly predictable in the future.\u201d<\/p>\n<\/div>\n

 <\/p>\n

By John Hitch<\/a><\/span><\/p>\n

Source: https:\/\/www.fleetowner.com\/<\/a><\/span><\/p>\n

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FLEET MANAGEMENT AUDIT<\/strong><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

In part one of a two-part series, we looked at how fleets can break even or save money by switching to air disc brakes (ADBs), while also benefiting from better stopping performance. Another big reason is found in the maintenance shop. Or rather, by how more durable brakes keep trucks out of the shop. \u201cWe\u2019re…<\/p>\n","protected":false},"author":3,"featured_media":11124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[53],"_links":{"self":[{"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/posts\/11123"}],"collection":[{"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/comments?post=11123"}],"version-history":[{"count":1,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/posts\/11123\/revisions"}],"predecessor-version":[{"id":11125,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/posts\/11123\/revisions\/11125"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/media\/11124"}],"wp:attachment":[{"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/media?parent=11123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/categories?post=11123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/advancedfleetmanagementconsulting.com\/eng\/wp-json\/wp\/v2\/tags?post=11123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}