mm28 Anti Lock Braking Systems ABS for Trucks, Tractors, and Buses C Version

Asbestos and Non-Asbestos Fibers

ASBESTOS FIBERS WARNING The followin g proce du re s for s ervicin g b rake s are recommen d e d to re du ce expo su re to a sb e s to s fi b er dus t, a cancer an d l u n g d i s ea s e hazar d . Material S afety Data S heet s are

NON-ASBESTOS FIBERS WARNING The followin g proce du re s for s ervicin g b rake s are recommen d e d to re du ce expo su re to non-a sb e s to s fi b er dus t, a cancer an d l u n g d i s ea s e hazar d . Material S afety Data S heet s

availa b le from WABCO. Hazard Summary

are availa b le from WABCO. Hazard Summary

Most r e c e ntly m a nuf a ctur ed b r a k e linings d o not cont a in a s be stos fi be rs. Th e s e b r a k e linings m a y cont a in on e or mor e of a v a ri e ty of ingr ed i e nts, inclu d ing gl a ss fi be rs, min e r a l wool, a r a mi d fi be rs, c e r a mic fi be rs a n d silic a th a t c a n pr e s e nt h ea lth risks if inh a l ed . S ci e ntists d is a gr ee on th e e xt e nt of th e risks from e xposur e to th e s e su b st a nc e s. Non e th e l e ss, e xposur e to silic a d ust c a n c a us e silicosis, a non-c a nc e rous lung d is ea s e . S ilicosis gr ad u a lly r ed uc e s lung c a p a city a n d e ffici e ncy a n d c a n r e sult in s e rious b r ea thing d ifficulty. S om e sci e ntists be li e v e oth e r typ e s of non- a s be stos fi be rs, wh e n inh a l ed , c a n c a us e simil a r d is ea s e s of th e lung. In add ition, silic a d ust a n d c e r a mic fi be r d ust a r e known to th e S t a t e of Ca liforni a to c a us e lung c a nc e r. U. S . a n d int e rn a tion a l a g e nci e s h a v e a lso de t e rmin ed th a t d ust from min e r a l wool, c e r a mic fi be rs a n d silic a a r e pot e nti a l c a us e s of c a nc e r. Accor d ingly, work e rs must us e c a ution to a voi d cr ea ting a n d b r ea thing d ust wh e n s e rvicing b r a k e s. S p e cific r e comm e n ded work pr a ctic e s for r ed ucing e xposur e to non- a s be stos d ust follow. C onsult your e mploy e r for mor e de t a ils. Recommended Work Practices 1. Se p a r a t e Work Ar ea s. Wh e n e v e r f ea si b l e , s e rvic e b r a k e s in a s e p a r a t e a r ea a w a y from oth e r op e r a tions to r ed uc e risks to unprot e ct ed p e rsons. 2. R e spir a tory Prot e ction. O S HA h a s s e t a m a ximum a llow ab l e l e v e l of e xposur e for silic a of 0.1 mg/m3 a s a n 8-hour tim e -w e ight ed a v e r a g e . S om e m a nuf a ctur e rs of non- a s be stos b r a k e linings r e comm e n d th a t e xposur e s to oth e r ingr ed i e nts foun d in non- a s be stos b r a k e linings be k e pt be low 1.0 f/cc a s a n 8-hour tim e -w e ight ed a v e r a g e . S ci e ntists d is a gr ee , how e v e r, to wh a t e xt e nt ad h e r e nc e to th e s e m a ximum a llow ab l e e xposur e l e v e ls will e limin a t e th e risk of d is ea s e th a t c a n r e sult from inh a ling non- a s be stos d ust. Th e r e for e , w ea r r e spir a tory prot e ction a t a ll tim e s d uring b r a k e s e rvicing, be ginning with th e r e mov a l of th e wh ee ls. W ea r a r e spir a tor e quipp ed with a high- e ffici e ncy (HEPA) filt e r a pprov ed b y NIO S H or M S HA, if th e e xposur e l e v e ls m a y e xc eed O S HA or m a nuf a ctur e rs ’ r e comm e n ded m a ximum l e v e ls. Ev e n wh e n e xposur e s a r e e xp e ct ed to be within th e m a ximum a llow ab l e l e v e ls, w ea ring such a r e spir a tor a t a ll tim e s d uring b r a k e s e rvicing will h e lp minimiz e e xposur e . 3. Proc ed ur e s for Se rvicing Br a k e s. a . Enclos e th e b r a k e a ss e m b ly within a n e g a tiv e pr e ssur e e nclosur e . Th e e nclosur e shoul d be e quipp ed with a HEPA v a cuum a n d work e r a rm sl ee v e s. With th e e nclosur e in pl a c e , us e th e HEPA v a cuum to loos e n a n d v a cuum r e si d u e from th e b r a k e p a rts. b . As a n a lt e rn a tiv e proc ed ur e , us e a c a tch ba sin with w a t e r a n d a b io de gr adab l e , non-phosph a t e , w a t e r- ba s ed de t e rg e nt to w a sh th e b r a k e d rum or rotor a n d oth e r b r a k e p a rts. Th e solution shoul d be a ppli ed with low pr e ssur e to pr e v e nt d ust from be coming a ir b orn e . Allow th e solution to flow be tw ee n th e b r a k e d rum a n d th e b r a k e support or th e b r a k e rotor a n d c a lip e r. Th e wh ee l hu b a n d b r a k e a ss e m b ly compon e nts shoul d be thoroughly w e tt ed to suppr e ss d ust be for e th e b r a k e sho e s or b r a k e p ad s a r e r e mov ed . Wip e th e b r a k e p a rts cl ea n with a cloth. c. If a n e nclos ed v a cuum syst e m or b r a k e w a shing e quipm e nt is not a v a il ab l e , c a r e fully cl ea n th e b r a k e p a rts in th e op e n a ir. W e t th e p a rts with a solution a ppli ed with a pump-spr a y b ottl e th a t cr ea t e s a fin e mist. Us e a solution cont a ining w a t e r, a n d , if a v a il ab l e , a b io de gr adab l e , non-phosph a t e , w a t e r- ba s ed de t e rg e nt. Th e wh ee l hu b a n d b r a k e a ss e m b ly compon e nts shoul d be thoroughly w e tt ed to suppr e ss d ust be for e th e b r a k e sho e s or b r a k e p ad s a r e r e mov ed . Wip e th e b r a k e p a rts cl ea n with a cloth. d . W ea r a r e spir a tor e quipp ed with a HEPA filt e r a pprov ed b y NIO S H or M S HA wh e n grin d ing or m a chining b r a k e linings. In add ition, d o such work in a n a r ea with a loc a l e xh a ust v e ntil a tion syst e m e quipp ed with a HEPA filt e r. e . NEVER us e compr e ss ed a ir b y its e lf, d ry b rushing, or a v a cuum not e quipp ed with a HEPA filt e r wh e n cl ea ning b r a k e p a rts or a ss e m b li e s. NEVER us e c a rcinog e nic solv e nts, fl a mm ab l e solv e nts, or solv e nts th a t c a n da m a g e b r a k e compon e nts a s w e tting a g e nts. 4. C l ea ning Work Ar ea s. C l ea n work a r ea s with a v a cuum e quipp ed with a HEPA filt e r or b y w e t wiping. NEVER us e compr e ss ed a ir or d ry sw ee ping to cl ea n work a r ea s. Wh e n you e mpty v a cuum cl ea n e rs a n d h a n d l e us ed r a gs, w ea r a r e spir a tor e quipp ed with a HEPA filt e r a pprov ed b y NIO S H or M S HA, to minimiz e e xposur e . Wh e n you r e pl a c e a HEPA filt e r, w e t th e filt e r with a fin e mist of w a t e r a n d d ispos e of th e us ed filt e r with c a r e . 5. Work e r C l ea n-Up. Aft e r s e rvicing b r a k e s, w a sh your h a n d s be for e you ea t, d rink or smok e . S how e r a ft e r work. Do not w ea r work cloth e s hom e . Us e a v a cuum e quipp ed with a HEPA filt e r to v a cuum work cloth e s a ft e r th e y a r e worn. L a un de r th e m s e p a r a t e ly. Do not sh a k e or us e compr e ss ed a ir to r e mov e d ust from work cloth e s. 6 . W a st e Dispos a l. Dispos e of d isc a r ded linings, us ed r a gs, cloths a n d HEPA filt e rs with c a r e , such a s in s ea l ed pl a stic ba gs. C onsult a pplic ab l e EPA, st a t e a n d loc a l r e gul a tions on w a st e d ispos a l. Regulatory Guidance R e f e r e nc e s to O S HA, NIO S H, M S HA, a n d EPA, which a r e r e gul a tory a g e nci e s in th e Unit ed S t a t e s, a r e m ade to provi de furth e r gui da nc e to e mploy e rs a n d work e rs e mploy ed within th e Unit ed S t a t e s. Employ e rs a n d work e rs e mploy ed outsi de of th e Unit ed S t a t e s shoul d consult th e r e gul a tions th a t a pply to th e m for furth e r gui da nc e .

B e c a us e som e b r a k e linings cont a in a s be stos, work e rs who s e rvic e b r a k e s must un de rst a n d th e pot e nti a l h a z a r d s of a s be stos a n d pr e c a utions for r ed ucing risks. Exposur e to a ir b orn e a s be stos d ust c a n c a us e s e rious a n d possi b ly f a t a l d is ea s e s, inclu d ing a s be stosis ( a chronic lung d is ea s e ) a n d c a nc e r, princip a lly lung c a nc e r a n d m e soth e liom a ( a c a nc e r of th e lining of th e ch e st or abd omin a l c a viti e s). S om e stu d i e s show th a t th e risk of lung c a nc e r a mong p e rsons who smok e a n d who a r e e xpos ed to a s be stos is much gr ea t e r th a n th e risk for non-smok e rs. S ymptoms of th e s e d is ea s e s m a y not be com e a pp a r e nt for 15, 20 or mor e y ea rs a ft e r th e first e xposur e to a s be stos. Accor d ingly, work e rs must us e c a ution to a voi d cr ea ting a n d b r ea thing d ust wh e n s e rvicing b r a k e s. S p e cific r e comm e n ded work pr a ctic e s for r ed ucing e xposur e to a s be stos d ust follow. C onsult your e mploy e r for mor e de t a ils. Recommended Work Practices 1. Se p a r a t e Work Ar ea s. Wh e n e v e r f ea si b l e , s e rvic e b r a k e s in a s e p a r a t e a r ea a w a y from oth e r op e r a tions to r ed uc e risks to unprot e ct ed p e rsons. O S HA h a s s e t a m a ximum a llow ab l e l e v e l of e xposur e for a s be stos of 0.1 f/cc a s a n 8-hour tim e -w e ight ed a v e r a g e a n d 1.0 f/cc a v e r a g ed ov e r a 30-minut e p e rio d . S ci e ntists d is a gr ee , how e v e r, to wh a t e xt e nt ad h e r e nc e to th e m a ximum a llow ab l e e xposur e l e v e ls will e limin a t e th e risk of d is ea s e th a t c a n r e sult from inh a ling a s be stos d ust. O S HA r e quir e s th a t th e following sign be post ed a t th e e ntr a nc e to a r ea s wh e r e e xposur e s e xc eed e ith e r of th e m a ximum a llow ab l e l e v e ls: DAN G ER: A S BE S TO S CANCER AND LUN G DI S EA S E HAZARD AUTHORIZED PER S ONNEL ONLY RE S PIRATOR S AND PROTECTIVE CLOTHIN G ARE REQUIRED IN THI S AREA. 2. R e spir a tory Prot e ction. W ea r a r e spir a tor e quipp ed with a high- e ffici e ncy (HEPA) filt e r a pprov ed b y NIO S H or M S HA for us e with a s be stos a t a ll tim e s wh e n s e rvicing b r a k e s, be ginning with th e r e mov a l of th e wh ee ls. 3. Proc ed ur e s for Se rvicing Br a k e s. a . Enclos e th e b r a k e a ss e m b ly within a n e g a tiv e pr e ssur e e nclosur e . Th e e nclosur e shoul d be e quipp ed with a HEPA v a cuum a n d work e r a rm sl ee v e s. With th e e nclosur e in pl a c e , us e th e HEPA v a cuum to loos e n a n d v a cuum r e si d u e from th e b r a k e p a rts. b . As a n a lt e rn a tiv e proc ed ur e , us e a c a tch ba sin with w a t e r a n d a b io de gr adab l e , non-phosph a t e , w a t e r- ba s ed de t e rg e nt to w a sh th e b r a k e d rum or rotor a n d oth e r b r a k e p a rts. Th e solution shoul d be a ppli ed with low pr e ssur e to pr e v e nt d ust from be coming a ir b orn e . Allow th e solution to flow be tw ee n th e b r a k e d rum a n d th e b r a k e support or th e b r a k e rotor a n d c a lip e r. Th e wh ee l hu b a n d b r a k e a ss e m b ly compon e nts shoul d be thoroughly w e tt ed to suppr e ss d ust be for e th e b r a k e sho e s or b r a k e p ad s a r e r e mov ed . Wip e th e b r a k e p a rts cl ea n with a cloth. c. If a n e nclos ed v a cuum syst e m or b r a k e w a shing e quipm e nt is not a v a il ab l e , e mploy e rs m a y ad opt th e ir own writt e n proc ed ur e s for s e rvicing b r a k e s, provi ded th a t th e e xposur e l e v e ls a ssoci a t ed with th e e mploy e r ’ s proc ed ur e s d o not e xc eed th e l e v e ls a ssoci a t ed with th e e nclos ed v a cuum syst e m or b r a k e w a shing e quipm e nt. C onsult O S HA r e gul a tions for mor e de t a ils. d . W ea r a r e spir a tor e quipp ed with a HEPA filt e r a pprov ed b y NIO S H or M S HA for us e with a s be stos wh e n grin d ing or m a chining b r a k e linings. In add ition, d o such work in a n a r ea with a loc a l e xh a ust v e ntil a tion syst e m e quipp ed with a HEPA filt e r. e . NEVER us e compr e ss ed a ir b y its e lf, d ry b rushing, or a v a cuum not e quipp ed with a HEPA filt e r wh e n cl ea ning b r a k e p a rts or a ss e m b li e s. NEVER us e c a rcinog e nic solv e nts, fl a mm ab l e solv e nts, or solv e nts th a t c a n da m a g e b r a k e compon e nts a s w e tting a g e nts. 4. C l ea ning Work Ar ea s. C l ea n work a r ea s with a v a cuum e quipp ed with a HEPA filt e r or b y w e t wiping. NEVER us e compr e ss ed a ir or d ry sw ee ping to cl ea n work a r ea s. Wh e n you e mpty v a cuum cl ea n e rs a n d h a n d l e us ed r a gs, w ea r a r e spir a tor e quipp ed with a HEPA filt e r a pprov ed b y NIO S H or M S HA for us e with a s be stos. Wh e n you r e pl a c e a HEPA filt e r, w e t th e filt e r with a fin e mist of w a t e r a n d d ispos e of th e us ed filt e r with c a r e . 5. Work e r C l ea n-Up. Aft e r s e rvicing b r a k e s, w a sh your h a n d s be for e you ea t, d rink or smok e . S how e r a ft e r work. Do not w ea r work cloth e s hom e . Us e a v a cuum e quipp ed with a HEPA filt e r to v a cuum work cloth e s a ft e r th e y a r e worn. L a un de r th e m s e p a r a t e ly. Do not sh a k e or us e compr e ss ed a ir to r e mov e d ust from work cloth e s. 6 . W a st e Dispos a l. Dispos e of d isc a r ded linings, us ed r a gs, cloths a n d HEPA filt e rs with c a r e , such a s in s ea l ed pl a stic ba gs. C onsult a pplic ab l e EPA, st a t e a n d loc a l r e gul a tions on w a st e d ispos a l. Regulatory Guidance R e f e r e nc e s to O S HA, NIO S H, M S HA, a n d EPA, which a r e r e gul a tory a g e nci e s in th e Unit ed S t a t e s, a r e m ade to provi de furth e r gui da nc e to e mploy e rs a n d work e rs e mploy ed within th e Unit ed S t a t e s. Employ e rs a n d work e rs e mploy ed outsi de of th e Unit ed S t a t e s shoul d consult th e r e gul a tions th a t a pply to th e m for furth e r gui da nc e .

i WABCO Maintenance Manual MM-28 (Revised 03.2020)