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FILE NAME Brakes BRK DATE 1977 DOC BRK216 DOCUMENT DESCRIPTION Trader Journal Article - Beware of Brake Dust  <4 , Exclusive Beware of Brake Dust MOST MECHANICS GO ABOUT 11 A of cleaning brake and clutch dust know That while doing the job they are inhaling som His vor! dust It has been general knowledge that limin pads are made on the average of 50 to 60 pur and L asbestos However past studies have led us to believe that the asbestos fiber was locked into other materials in the lining and that a change due to the high heat of friction took place during braking or clutch application This transformed the asbestos fiber into a toxic fibrous material called forsterite The conclusion then was that the dust was harmless Studies conducted by the Mt. Sinai School of Medicine in New York City indicate that brake dust may actually contain an average of 3 to 6 percent asbestos with some tests showing concentrations as high as 15 percent Samples of air were taken under actual working conditions in a fleet garage and a N.Y. Dept. of Sanitation truck repairshop These samples were analyzed by electron microscopy and abies ee - siulaies sneatien &hiemmmidans nina Fig 2. NEVER BLOW OFF dirt from a brake assembly with an air gun After vacuuming use a nearly damp rag i ad Bat lane tah ad ih bs tie at Ha his Ed ia ai ate revealed levels of airborne asbestos considerably higher than those permitted by federal law It should . be noted that during the testing in the truck repair- shop grinding of brake shoes was carried out The work of the researchers at Mt. Sinal was discussed at a meeting of the National Institute for Occupational Safety and Health NIOSH where the results of physical examinations given to 90 men who had been working as automobile and truck- brake repairmen for a period of 10 years were examined Of this small group the doctors stated that ray examinations showed that over onequarter had signs of abnormalities consistent with asbestosis disease the same tests revealed that one quarter had also rested rested pulmonary lung func- tions This eviden ompted NIOSH to issue an alert to the auto repair industry indicating that while the full creat creat of asbestos disease in service perseel is not known because this occupational gro = not been systematically studied up to Aon, enrgh scientific data has been accumulated to post out the need to start immediate control measures so that the health hazard of Fig 1. REMOVE BRAKE DUST with efficiency filtered industrial vacuum cleaner Wear purifying respirator asbestos can be mimizel mimizel There is no doubt that health hazard exists and . that exposure to as bestorfhers can increase the risk - continued on page 70 74 ow MOTOR March 1977 oa continued from page 74 a . developing of ern a) " four diseases asbestosis malignant scarring lung condition cancer of the lung cancer of the digestive tract and mesothelioma a cancer of the lining of the chest or abdominal cavities Se tong Aci There are some authorities and other studies that place the percentage of asbestos in brake dust ~ at a much lower level than those reported by the Mt. Sinai group and disagree with its findings All authorities agree that no matter how small the we nie pen at , ae re - concentration of asbestos in brake and clutch dust there is an immediate need to initiate work practices in every shop that will eliminate any risk to the health of mechanics The danger is associated with drilling grinding and cutting of brake linings The dust generated during these operations must be collected in a recovery system that has a efficiency filter Many older grinders either have no recovery tiny system or are equipped with vacuums that allow particles of asbestos fiber to be blown into the air _" _Buying ground shoes will minimize the need for HON grinding . Where possible a separate area should be set aside for brake and clutch work and a sign posted at the ey entrance that reads ot ASBESTOS DUST HAZARD :| " a AVOID BREATHING DUST WEAR ASSIGNED PROTECTIVE EQUIPMENT DO NOT REMAIN IN AREA a UNLESS YOUR WORK ra REQUIRES IT BREATHING ASBESTOS DUST MAY BE HAZARDOUS TO YOUR HEALTH Dust should never be removed from a brake or clutch assembly with an air blowgun or by brushing The only way to safely clean dust containing a" asbestos is with an industrial vacuum with a high efficiency filtering system Fig ) Don't use Poyben: one of your wife's old vacuum cleaners because it y net probably will do more harm than good The fine eden d particles of asbestos will pass through most vacuum Ltt cleaners and you will end up with a higher concen- tant tration of asbestos than you would have if you hadn't used the vacuum at all The vacuum you buy should thea have a percent efficiency for 0.3 micrometers diameter aerosols If there is any remaining dust nantes that was not removed by vacuuming wash it off _ using a slightly damp rag Under no circumstances 0 ~ should you use an air gun or dry brush Fig 2 76 Infere 19 ... ... ... in ...Deing carini about- a vacuuming the die if when you empty the vacuum cleaner bag the bust blows all around you and the shop Brake and catch dust should be disposed ofin 4+ a special plastic '. marked as follow- CAUTION CONTAINS ASBESTOS FIBERS AVOID BREATHING DUST DUST BREATHING ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM Even using a high +s. industrial vacuum cleaner will not prevent a --+..1.. amount of dust from reaching some noses an maths which will inhale it To prevent this you shid wear an purifying respirator of either the throwaway type like those usedin body shops or one with a replaceable particulate filter Before you buy either type be sure that it is approved by NIOSH or the Mining Enforcement and Safety Administration Wear the respirator while you are operating a grinder drill or when emptying the dust collection bags on your vacuum cleaner There is bound to be some brake and clutch dust that falls to the floor while you are working so be sure to use an industrial vacuum cleaner to pick it up Don't sweep this part of the shop with a broom A broom has the tendency to flick the asbestos we particles up into the air and that is where they are dangerous The rest is common sense If your shop . has heavy accumulations of dust on lockers parts shelves overhead door channels beams and on window sills there is a good chance that dust . contains some asbestos Wear your respirator and use your vacuum cleaner to go over all those hidden places carefully and clean up the dust Change your work clothes regularly and don't bring them home Have them washed by an industrial laundry Wash your hands thoroughly before eating and avoid eating in the area where you do brake and clutch work Every shop large or small is responsible for meeting the requirements of the federal law which alls for industri + riene inspections carried out thy OSHA represent Under this law the level i asbestos shali d2 d2 fibers longer than 5 micrometers micrometers per ca meter of air For a list of these firms sert dressed stamped post- eae. in an envelope Asbestos MOTOR 1790 Rey Rey Rey New York 119 te arh has deter--deter- that smoking increases th to of lung - can ing people exposed to asto tos dust In sho. wut brakes and 1 you have been working - for several years it WOM " wits o ge ive na vmoking : continued on page 85 MOTOR March1977 he ats+ - Awe continued from page 76 Kom- It is gratifying to note that a great deal of money and time is being spent by br fo lutch lining manufacturers to deal with the am In aoe addition to OSHA's specific rej a remes one firm has included usefut pro the warning label on every bees et brake huol on | TOOLS THAT THE DE THE FIRST TIME . . 4 clutch farmugs it sells This same firm any mended procedures for resducing asi sedat during brake service in their service maniIA JEDE ' training film In the final analysis you are the only one vin can protect yourself from the potential dangers of exposure to asbestos dust If you wear a respirator or mask use an approved brake vacuum deaner dispose of the dust in the prescribed manner vacuum the floors and use good common sense about house cleaning there is little to fear from the presence of asbestos dust The few extra precautions involved could prevent you from contracting a very painful if not fatal disease Start tomorrow to clean up your act . you owe to yourself your family and your fellow workers oO aeway a * Tatercroneewtis ha anpe PNoimeperA ae r iGefet by, 4 Sau! NSTis oo epaenryatie, Las ntie ad gentied How to Promote Your Service Department pene continued from pige ^ + we with Moore special service Z . seth, G.M. vile the clinic will he favorably impressed and may tools for and AMC cars # eeee: Epes obam become customers in the future A clinic of this type invariably uncovers the need for much service work gts, . 2 oar) BID Now the special service tools you need to ; # Atevnah we SA and the dealer should get a substantial share of this < quickly properly and profitably service s Y Merwe. aatead work ue 6 American Motors and General Motors 197 *5 4 The best promotion won't be effective unless models are available directly from Kent- sinha f Moore tf promises the service department can deliver what it enthak Among the most frequent customer complaints are ceatns work not done when promised cars not repaired Using approved Moore service wi tools the J number tool specified in your i aetna properly and high cost of repairs Most dealerships Service Manual you can do those tough jobs = TI will make good on a job if the work is performed much faster and easier than with ordinary ay improperly or a part is defective These warran- shop tools Moore tools save you time ties are usually informal in nature but some which is money in your pocket unnecessary IS $j 4 are dealers have plans that are specific and widely job iat work and they help you do the job to factory 4. . as ulvertised oink Your shop equipment can also an important specs This means greater customer satisfaction fewer backs merchandising tind An optical wheel a gnment machine for example projects a pictur of the Kent Moore special service tools You owe it | front setup of a customer's ear P wners o yourself to check them out itt understand the pattern of as are impressed by the dealer + such sophisticated equipmer cians in its operation Finally never forget th disers are your shop person cence, most est hni archannot be Write for our new catalog of special tools for 1977 models Write to Moore Tool Division 28635 Mound Rd Warren Michigan 48092 . xt & wt 2"j 3 i \9 pressure salesmen In customer with their courtesy ity and hack up that impressi oss the sincererform- i ma, we deg Ke on ance your investment in mo promotional promotional plans will pay off ment and || soa, PAT.CO a hese ae reeel set te Ga all ast s teb s e eo MOTOR March 1977 7 mytChote . . Sr elie BLO oy ee or) . a OTP he ' Meir Ue, po, tes ee i es Paroo eB teeeh et eee a ee oe