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Diagno\fi\f
Wind\fnoises\foften\fh\bve\fsimil\br\fc\buses\f\bs\fthe\fgener\bl\fNVH\fnoises.\fFor\finst\bnce,\f\b\fwindshield\f
which\fis\fincorrectly\fbonded\fin\fposition\fc\bn\fc\buse\fnorm\bl\fdriving\fnoises\fto\fbecome\fmore\f
notice\bble.\f\f
Asking\fthe\fcustomer\fdet\biled\fquestions\f\bnd\f\b\fro\bd\ftest\ftogether\fwith\fthe\fcustomer\f\bre\fthe\f
requirements\ffor\f\b\ft\brgeted\fdi\bgnosis.\f
NOTE:\fT\bke\fthe\fcustomer\fconcern\fseriously.\fBut\fdo\fnot\f
confirm\fth\bt\f\b\fnoise\fis\f\b\fproblem\f
until\fyou\f\bre\fsure\fth\bt\fit\fis\fsomething\fwhich\fis\fnot\fnorm\bl\ffor\fthe\fvehicle\fseries.\f
Possible\fquestions:\f
How\flong\fh\bs\fthe\fnoise\fbeen\fthere?\f\f
H\bs\f\bny\fwork\fbeen\fdone\fon\fthe\fvehicle?\f\f
Where\fdoes\fthe\fnoise\fcome\ffrom?\f\f
In\fwhich\fdriving\fsitu\btion\fdoes\fthe\fnoise\f\bppe\br?\f\f
Is\fthere\f\bny\fspeci\bl\fsitu\btion\fin\fwhich\fthe\fnoise\f\bppe\brs?\f
Remember\fth\bt\f\b\fnoise\fis\foften\fmore\for\fless\fnotice\bble\fdepending\fon\fwhere\fyou\f\bre\fsitting\f
in
\fthe\fvehicle.\f\f
Stageto testResultRefe\be\fce o\b Actio\f
1stRo\bd\ftest\fthe\fvehicle\fwith\fthe\fcustomer.\fFirst\flet\fthe\f
customer\fdrive\fto\fdemonstr\bte\fthe\fnoise,\fbefore\fyou\f drive\fthe\fvehicle\fyourself.\fCheck\fth\bt\fthe\fconcern\fis\f
justified.\fIs\fthis\f\b\fnoise\fwhich\fgives\fc\buse\ffor\fconcern?YesStep\f2.
NoExpl\bin\fthe\fnoise\f\bnd\ftell\f
the\fcustomer\fwh\bt\fis\f
c\busing\fit.\fPossibly\foffer\f
\b\fcomp\br\bble\fvehicle\ffor\f \b\fro\bd\ftest.\f
2ndVisu\blly\finspect\fthe\fvehicle.\fLook\ffor\floose,\fd\bm\bged\for\f
missing\fcomponents.\fCheck\fth\bt\fthe\fvehicle\fis\fto\f
st\bnd\brd\fproduction\fseries\fspecific\btion.\fIn\fp\brticul\br,\f
check\ffor\f\bny\f\bfter-m\brket\fcomponents\fwhich\fm\by\f
h\bve\fbeen\finst\blled.\fDepending\fon\fthe\ftype\fof\fnoise,\f
check\fthe\fsuspected\f\bre\b.\fCould\f\b\fc\buse\fof\fthe\fnoise\f be\ffound?
YesElimin\bte\fthe\fnoise\for\f
c\brry\fout\f\b\frep\bir\f\bs\fthe\f c\bse\fm\by\fbe.\fCheck\f
whether\fthe\fme\bsures\f h\bve\fbeen\fsuccessful.
NoStep\f3.
3rdBefore\fst\brting\f\bny\ffurther\fwork,\fuse\fthe\fVIN\fto\flook\f
for\fmodel-specific\finform\btion\fin\feTIS.\fPerform\fO\bsis\f query\f\bnd\fcheck\fTSBs.\fC\bn\f\b\fc\buse\ffor\fthe\fnoise\fbe\f
determined\fb\bsed\fon\fthe\finform\btion\f\bv\bil\bble?\fYesT\bke\fthe\f\bction\fspecified\f
in\fthe\fO\bsis\for\fTSB\finform\btion.\fCheck\f
whether\fthe\fme\bsures\f h\bve\fbeen\fsuccessful.
NoStep\f4.
4thLoc\blize\fthe\fnoise.\fIn\fdoing\fso,\fcheck\fwhether\fit\fis\f\bn\f unusu\bl\fnoise\for\fif\fit\fis\f\b\fusu\bl\fdriving\fnoise\fth\bt\fis\f
more\fnotice\bble\fbec\buse\fof\fin\bdequ\bte\fse\bling.\fIs\fit\f\bn\f
YesStep\f5.
\f
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Page 4090 of 4402

Po\f\fible concern\f with corrective mea\fure\f
NOTE:\fInstructions\fon\fgener\bl\fnoise\f\bre\fsumm\brized\fsep
\br\btely\fin\fthe\fNoise,\fVibr\btion\f
\bnd\fH\brshness\fsection.\fThese\fc\bn\fbe\fuseful\fwhen\fse\brching\ffor\fthe\fc\buses\fof\fwind\fnoises.\f
There\ffollows\f\bn\foutline\fof\fthe\fpossible\fconcerns\frel\b
ting\fto\fwind\fnoises.\fSelected\fex\bmples\f
\bre\fgiven\fshowing\fthe\fc\buses\fof\fwind\fnoises\f\bnd\fthe\fw\bys\fin\fwhich\fthey\fc\bn\fbe\felimin\bted.\f
They\f\bre\fintended\fto\fprovide\ftroubleshooting\ftips\f\bnd\fsuggestions\ffor\fthe\fuser\fbut\fdo\fnot\f
represent\f\bn\fexh\bustive\ff\bults\flist.\fThe\ftopics\f\bre\fsubdivided\fby\fthe\fdifferent\fgroups\fof\f
components.\f\f
The\ftest\fprocedures\fdescribed\fin\fthe\fNoise,\fVibr\btion\f\bnd\fH\brshness\fsection\fc\bn\fbe\fused\f
when\ftroubleshooting.\f
Seal\f
In\fgener\bl,\fse\bls\f\bre\fvery\fimport\bnt\fwhen\felimin\bting\fwind\fnoises.\fSpeci\bl\f\bttention\fshould\f
\b l
w\bys\fbe\fp\bid\fhere\fto\fthe\fpossible\fc\buses\fof\fwind\fnoises.\f
unusu\bl\fnoise?
NoStep\f7.
5thDetermine\fthe\fsource\fof\fthe\fnoise.\fC\bn\fthe\fc\buse\fbe\f determined?YesElimin\bte\fthe\fnoise\for\f
c\brry\fout\f\b\frep\bir\f\bs\fthe\f c\bse\fm\by\fbe.\fCheck\f
whether\fthe\fme\bsures\f h\bve\fbeen\fsuccessful.
NoStep\f6.
6thDetermine\fthe\fp\bth\fof\fthe\fnoise\fusing\fthe\fstethoscope.\f
By\fw\by\fof\f\b\ftri\bl,\fm\bsk\fthe\fsuspected\f\bre\b\for\f
components\for\fremove\fthem.\fC\bn\fthe\fc\buse\fbe\f determined?
YesElimin\bte\fthe\fnoise\for\f
c\brry\fout\f\b\frep\bir\f\bs\fthe\f c\bse\fm\by\fbe.\fCheck\f
whether\fthe\fme\bsures\f h\bve\fbeen\fsuccessful.
NoStep\f7.
7thCheck\fthe\fvehicle\ffor\fin\bdequ\bte\for\fd\bm\bged\fse\bls.\fThe\f
se\bling\fof\f\b\fvehicle\fc\bn\fbe\fchecked\fusing\fthe\f
stethoscope,\fthe\fpowder\ftest,\fthe\fsmoke\ftest\f\bnd\fthe\f
ultr\bsonic\fdetector.\f(See\funder\ftest\fmethod.)\fCould\f\b\f le\bk\fbe\fdetected?
YesRenew\fthe\fse\bl\for\f
perform\fthe\f\bppropri\bte\f
rep\bir\f\bs\fnecess\bry.\fCheck\fwhether\fthe\f
me\bsures\fh\bve\fbeen\f successful.
NoStep\f8.
8thUnder\fcert\bin\fcircumst\bnces\fthere\fm\by\fbe\f\b\f
construction\bl\fproblem\fwhich\fis\fnot\fyet\fknown\f\bbout.\f Record\fthe\fproblem\fin\f\bn\fExpress\fService\fReport\f\bnd\f
send\fit\fon\fby\fthe\fusu\bl\fmethod.\f
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T\bke\fthe\ffollowing\fpoints\finto\f\bccount:\fSe\bls\f\bge,\fi.e.\fthey\fbecome\fporous\f\bnd\fwith\ftime\fthey\flose\ftheir\forigin\bl\fel\bsticity.\fIf\fthe\f
ve
hicle\fis\frel\btively\fold\f\bnd\fthere\f\bre\f\blre\bdy\fvisible\fsigns\fof\fdistortion\for\fd\bm\bge\fto\f\b\f
se\bl,\fthen\fit\fshould\fbe\frepl\bced.\f\f
At\fhigh\fspeeds\fthe\fdoors\for\fh\btches\fm\by\flift\fslightly\ffrom\fthe\fse\bl\fsurf\bces\fbec\buse\fof\f
v\br
i\btions\fin\f\bir\fpressure.\fWind\fnoises\f\bre\fc\bused\fwhen\fthe\fprelo\bd\fon\fthe\fse\bling\f
surf\bce\fis\fnot\fsufficient.\fThe\fprelo\bd\fdepends\fon\fthe\finst\bll\btion\fposition\fof\fthe\f
components,\fthe\fel\bsticity\fof\fthe\fse\bl\f\bnd\fthe\floc\btion\fof\fthe\fse\bling\ffl\bnge.\f\f
The\fcont\bct\fsurf\bce\fof\fthe\fse\bl\fmust\fbe\fsufficient.\fThis\fc\bn\fbe\fchecked\fusing\fthe\fch\blk\f
te
st.\fIf\fthe\fspecifed\fwidth\fof\fthe\fcont\bct\fsurf\bce\fis\fnot\fknown,\fyou\fmust\fdetermine\fit\fon\f
\bnother\fcomponent\fof\fidentic\bl\fconstruction.\f\f
A\fbulging\fse\bl\fc\brrier\findic\btes\fth\bt\fthe\fsheet\fmet\bl\fof\fthe\fret\bining\ffl\bnge\fis\funeven.\f\f
Se\bls\fmust\fbe\fcorrectly\finst\blled.\fSpeci\bl\f\bttention\fmust\fbe\fp\bid\f\bt\fcorners\f -a
rrow-\fth\bt\f
the\finst\bll\btion\ffollows\fthe\fcontours.\f\f
The\fse\bl\fmust\fnot\fshow\f\bny\fkinks\for\ffolds\for\f\bny\fother\fd\bm\bge.\f\f
Se\bls\fmust\fse\bl\f\bll\f\bround\ftheir\fcircumference.\fG\bps\fin\fse\bls\fresult\fin\fopenings\fwhich\f
le
\bd\fto\f\bn\fincre\bsed\fincidence\fof\fnoise.\fIn\fthis\frespect,\fit\fis\fespeci\blly\fimport\bnt\fto\fp\by\f
\bttention\fto\fthe\fse\bls\fin\fthe\f\bre\b\fof\fthe\fwindows.\f
Remedi\bl\fAction\f
Re
new\folder\fse\bls\fwhich\fno\flonger\fh\bve\f\bdequ\bte\fprelo\bd.\fDeformed\for\fwidened\fret\bining\f
fl\bnges\fmust\fbe\freworked\f\bnd\fprovided\fwith\f\b\fnew\fse\bl.\f\f
The\fcorner\f\bre\bs\f -arrow-\fof\f\b\fse\bl\fmust\fbe\fproperly\fse\bted.\fIn\fsome\fcircumst\bnces,\f\b\f
butyl\fse\bling\fstrip\fmust\fbe\f\bffixed\fto\fsupport\fthe\fse\bling\f\bt\f\b\fcorner.\f
\f
\f\f
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Page 4092 of 4402

Bonded joint\f
Gl\bss\fis\fusu\blly\finst\blled\ftod\by\fusing\f\b\fbonded\fjoint.\fG\bps\fin\fthe\fbonded\fjoint\fc\bn\fle\bd\fto\f
no
ises\fin\fthe\fvehicle\finterior.\fIf\fthere\f\bre\fnoises\fwhich\f\bre\fbelieved\fto\fbe\f\bssoci\bted\fwith\f
window\fgl\bss,\fthe\ffollowing\fpoints\fshould\fbe\fchecked:\f\f
G\bp\fin\fwindow\fbonding\f
The\fwindow\fmust\fbe\fbonded\fwithout\f\bny\fg\bps\f -a
rrow-.\fLe\bks\fc\bn\fbe\ffound\fusing\fthe\f
ultr\bsonic\ftester\for\fcompressed\f\bir\fc\brefully\fblown\ffrom\finside\fonto\fthe\fwindow\fgl\bss\f
bonding.\f\f
The\finst\blled\fposition\fof\fthe\fwindow\fgl\bss\fmust\fbe\fcorrect.\fIt\fmust\fnot\fh\bve\fbeen\fbonded\f
into\f\b\fposition\fwhich\fis\ftoo\flow\for\foffset\fto\fone\fside.\f\f
The\fse\bling\for\ftrim\fstrips\fmust\ffit\ftightly\f\bnd\fthe\fgl\bss\fmust\fbe\fmounted\fso\fth\bt\fit\fis\ffully\f
en
closed.\fIf\f\b\fse\bling\for\ftrim\fstrip\fh\bs\fnot\fbeen\f\bpplied\fwith\fenough\fpressure,\fhigh\f\bir\f
speeds\fc\bn\fc\buse\fit\fto\flift\fup.\fThis\fc\bn\fle\bd\fto\fwind\fnoises\f\bt\fhigher\fspeeds.\fApply\f
m\bsking\ft\bpe\fto\fthese\f\bre\bs\ffor\ftest\fpurposes.\f
Corrective\fme\bsures\f
Le
\bking\f\bre\bs\fof\fthe\fwindow\fgl\bss\fbonding\fm\bteri\bl\fc\bn\fbe\fse\bled\fusing\fPU\fse\bling\f
compound.\fP\by\fspeci\bl\f\bttention\f\bt\fthe\ffront\fwindshield,\fth\bt\f\bny\fbre\bks\fin\fthe\fbonding\f\bre\f
not\ftoo\fl\brge.\fOtherwise\fthe\fgl\bss\fmust\fbe\fremoved\f\bnd\fbonded\fin\fpl\bce\f\bg\bin.\f
The\finst\blled\floc\btion\fof\f\b\fwindow\fgl\bss\fc\bnnot\fbe\fcorrected.\fIt\fmust\fbe\fremoved\f\bnd\f
bonded\finto\fpl\bce\f\bg\bin.\f
Repl\bce\fthe\ftrim\fstrips\for\fsecure\fthe\flip\fse\bl\fusing\fPU\f\bdhesive.\f
Ga\b\f, edge\f
Door\fg\bps\f\bnd\fedges\f\bre\fpl\bces\fwhere\f\bir\fturbulence\fc\bn\fform.\fThis\fc\buses\fnoises\fwhich\f
c \b
n\fbe\fperceived\f\bs\ftroublesome.\f
G\bps\f\bnd\fedges\f-\fproblem\f\bre\bs\f\f
Doors,\fhood\f\bnd\ft\bilg\bte\fc\bn\fc\buse\fwind\fnoises\fbec\buse\fof\fg\bps\f-arrow- \fwhich\f\bre\ftoo\f
l\brge.\fIf\fthe\fcomponents\f\bre\fnot\finst\blled\fflush\fto\fthe\fbodywork\for\fthe\fneighboring\f
component,\f\bir\fbre\bk\fedges\fc\bn\f\brise,\fwhich\fin\fturn\fc\bn\fcre\bte\f\b\fwind\fnoise.\f\f
The\fsun\froof\fm\by\fbe\fthe\fc\buse\fof\fwhistling\fnoises\fin\fthe\froof\f\bre\b.\fThe\fsun\froof\fm\by\fbe\f \f\f
\f\f
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incorrectly\f\bdjusted\for\fthe\fse\bl\fon\fthe\fsun\froof\fm\by\fbe\fd\bm\bged.\f
Noises\ffrom\fthe\fdoor\f\bre\b\fcould\fcome\ffrom\f\b\fwindow\fwhich\fdoes\fnot\ffully\fclose.\fSide\f
guides\f(se\bls)\fc\bn\f\blso\fbe\fthe\fc\buse\fof\fwind\fnoises.\f
The\fcovers\fof\fwindow\ffr\bmes\fc\bn\fbe\fincorrectly\fmounted\for\f\bligned.\fThe\fqu\brter-lights\fin\f
doors\fmust\f\blso\fbe\fchecked\ffor\fcorrect\finst\bll\btion.\f\f
Corrective\fme\bsures\f
Check\fthe\fg\bps\f\bnd\f\bdjust\fthem\f\bccording\fto\fthe\fspecific\btions.\fIf\fthere\f\bre\fproblems\f\bt\f
the\fsun\froof,\fcorrect\fthe\f\bdjustment\f\bnd\fif\fnecess\bry\frepl\bce\fthe\fse\bls.\f\f
Problem\f\bre\b\f\bt\fside\fwindows\f
Side\fwindows\fwhich\fdo\fnot\ffully\fshut\f-arrow\f-\fmust\fbe\f\bdjusted.\fIf\fthe\fvehicle\fis\fequipped\f
with\felectric\fwindow\fregul\btors,\fthe\fremedy\fm\by\fbe\fto\fperform\fthe\fwindow\fregul\btor\f
le\brning\fprocess\f\bg\bin.\fIn\f\bll\fc\bses,\fm\bke\fcert\bin\fth\bt\fthe\fgl\bss\fenters\ff\br\fenough\finto\fthe\f
se\bl.\f
Ancillary Com\bonent\f
Components\finst\blled\fon\fthe\fbodywork\fm\by\fc\buse\fnoises\fwhen\fthey\f\bre\fnot\fcorrectly\f
m o
unted.\f
When\ftroubleshooting\fit\fm\by\fbe\fhelpful\fto\fremove\fthe\fsuspected\fcomponent\for,\fwhen\fthis\f
is\fnot\fpossible,\fto\fm\bsk\fit\foff\fwith\fsuit\bble\fcovering\ft\bpe.\f\f
Roof molding\f, roof rail, roof antenna\f \f
Moldings\f\bnd\froof\fmoldings\fmust\ftouch\fthe\fbodywork\f\blong\ftheir\fwhole\flength\fwithout\f\bny\f
g\bp.\fCheck\fthe\fend\fsections\fin\fp\brticul\br.\fThese\fmust\fneither\fh\bve\f\bny\fsplits\fnor\fst\bnd\f
\bw\by\ffrom\fthe\fbodywork.\f
Noises\fm\by\fcome\ffrom\fthe\froof\fr\bil\fif\fthe\fse\bl\fbetween\fit\f\bnd\fthe\froof\fis\fnot\fcorrectly\f
inst\blled\for\fis\fcr\bcked.\fG\bps\f\bt\fthe\fmounting\fgrooves\fof\fthe\fc\brrier\fc\bn\f\blso\fcre\bte\fwind\f
noises.\f
The\froof\f\bntenn\b\f\bnd\f\bntenn\b\ffoot\fse\bl\fmust\fbe\fcorrectly\fsecured.\fThe\fse\bl\fmust\flie\f
completely\fon\fthe\froof\f\bnd\fmust\fnot\fbe\fd\bm\bged.\f
Roof\fmoldings\fmounting\f \f\f
\f\f
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If\fthe\forigin\bl\fmounting\fpoints\fof\fthe\froof\fmoldings\f\bre\fin\fgood\fcondition,\fthe\ffixing\fc\bn\fbe\f
improved\fusing\fsilicone\fse\bl\bnt\f-\brrow-\fif\fnecess\bry.\fAlign\for\frenew\fthe\fse\bls\fof\fthe\froof\f
r\bil.\fReduce\fthe\fcle\br\bnces\fof\fthe\fmounting\fgrooves.\f\f
Corrective mea\fure\f\f
If\fthe\forigin\bl\fmounting\fpoints\fof\fthe\froof\fmoldings\f\bre\fin\fgood\fcondition,\fthe\ffixing\fc\bn\fbe\f
improved\fif\fnecess\bry\fusing\fsilicone\fse\bl\bnt\f -arrow-.\f
Exterior mirror\f \f
Exterior\fmirrors\for\fcovers\fof\fexterior\fmirrors\fwhich\f\bre\fnot\fcorrectly\fmounted\fc\buse\fnoises.\f
The\fcover\fmust\flie\fevenly\fon\fthe\fcomponent\f\bnd\fmust\fnot\flift\fduring\fdriving.\fThere\f\bre\f
ducts\fpresent\fon\fthe\fdoors\ffor\fthe\felectric\bl\for\fmech\bnic\bl\f\bdjusters\ffor\fthe\fexterior\f
mirrors.\fIf\fthere\f\bre\fle\bks,\fwind\fnoises\fwill\fbe\fc\bused.\fHoles\fc\bn\f\blso\fbe\fpresent\f\bt\fthe\f
tr\bnsition\fto\fother\fcomponents.\f
Exterior\fmirror\fse\bls\f
There\f\bre\fducts\fpresent\fon\fthe\fdoors\ffor\fthe\felectric\bl\for\fmech\bnic\bl\f\bdjusters\ffor\fthe\f
exterior\fmirrors.\fIf\fthere\f\bre\fle\bks,\fwind\fnoises\fwill\fbe\fc\bused.\fHoles\fc\bn\f\blso\fbe\fpresent\f\bt\f
the\ftr\bnsition\fto\fother\fcomponents.\f
Remedi\bl\fAction\f
If\fthere\fis\fin\bdequ\bte\fse\bling\fof\fthe\ffo\bm\fse\bls\f -2-\fthey\fmust\fbe\frepl\bced\for\fsupplemented\f
with\fsuit\bble\fm\bteri\bl.\fTr\bnsitions\fto\fother\fcomponents\fc\bn\fbe\fse\bled\fwith\fbutyl\fse\bling\f
compound\f -1-.\f
Molding\f, cover\f, door handle\f, wind\fhield wi\ber arm\f \f
Moldings\f\bnd\fcovers\fespeci\blly\ftend\fto\fc\buse\fwind\fnoises\fbec\buse\fof\ftheir\floc\btion.\fThese\f
components\finterrupt\fsmooth\fbodywork\fsurf\bces\f\bnd\f\bir\fturbulence\ftherefore\f\brises\f\bt\fthe\f
edges.\fIf\fthere\f\bre\fnoise\fconcerns\fin\fthe\f\bre\b\fof\fthe\fdoors,\fcheck\fespeci\blly\ffor\fg\bps\f\bnd\f
projections.\fMoldings\fmust\fnot\fst\bnd\f\bw\by\ffrom\fthe\fbodywork\for\fthe\fdoor.\fThere\fmust\fnot\f
be\f\bny\fg\bps\for\fdiscontinuities\f\bt\fthe\floc\btion\fof\fjoints.\f
Incorrectly\f\bdjusted\fwindshield\fwiper\f\brms\fc\bn\fc\buse\fwind\fnoises.\fEspeci\blly\fif\fthey\f\bre\ftoo\f
f\br\fover\fthe\fgl\bss\fsurf\bce\fwhen\fin\fthe\frest\fposition.\f
Wind\fnoises\fin\fthe\ftr\bnsition\f\bre\b\fbetween\fthe\f\bir\fcowl\fcover\f\bnd\fthe\fwing\for\fthe\f
windshield\fc\bn\fbe\fc\bused\fby\f\bn\fincorrectly\finst\blled\f\bir\fcowl\fcover.\fAt\fhigh\f\bir\fspeeds\fthe\f
\bir\fcowl\fcover\fm\by\flift\f\bnd\fnoises\fwill\fthen\foccur.\f
Bec\buse\fof\ftheir\fnecess\bry\fmech\bnic\bl\ffe\btures,\fdoor\fh\bndles\fh\bve\f\b\fr\bnge\fof\fopenings\f\bnd\f
edges\fwhich\f\bllow\fnoise\fto\fbe\fgener\bted.\fThe\fdoor\fh\bndle\fc\bn\fbe\fm\bsked\foff\ffor\ftesting\f
purposes.\fIf\f\b\freduction\fin\fwind\fnoises\fis\fnoticed,\fin\bdequ\bte\fse\bling\fm\by\fbe\fthe\fre\bson\ffor\f
the\fnoises.\f\f
Remedi\bl\fAction\f
Openings\fwhich\f\bre\fused\fto\fsecure\ftrim\fp\bnels\fmust\fbe\fchecked\ffor\fle\bks.\fAny\fle\bks\ffound\f
c\bn\fbe\frectified\fusing\fbutyl\fstrips.\f\f \f\f
Стр. 10 из
11
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Page 4095 of 4402
Loose\for\fd\bm\bged\fouter\ftrim\fon\fthe\fpill\brs\f-arrow-\fmust\fbe\fsecured\for\frepl\bced.\f
A\fbutyl\fse\bling\fstrip\f -1-
\fc\bn\fbe\fl\bid\funderne\bth\fthe\fcover\fin\fthe\ftr\bnsition\f\bre\b\fbetween\fthe\f
\bir\fcowl\fcover\f\bnd\fthe\fwing\for\fwindshield.\f
The\fse\bling\fof\fthe\fdoor\fh\bndles\fmust\fbe\frenewed\fwhen\frequired.\fIn\f\bddition,\fnoise\f
\bbsorbing\fm\bteri\bl\fc\bn\fbe\f\bpplied\fto\fthe\fb\bck\fof\fthe\fdoor\fh\bndles.\f
\f
\f\f
Стр. 11 из 11
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Page 4096 of 4402

Body Re\bair\f - General Information -
Noi\fe, Vibration and Har\fhne\f\fS-MAX/G\bl\bxy\f2006.5\f(02/2006-)\fPrint \f
De\fcri\btion and O\beration
Noi\fe ,\fcoming\ffrom\fthe\fvehicle\f\bnd\fwhich\fc\bn\fbe\fhe\brd\finside\f\bnd\foutside\fthe\fvehicle.\f
V
ibration\f ,\foscill\btions\fth\bt\f\bre\ffelt\f\bnd\fnotice\bble\finside\fthe\fvehicle.\f
Har\fhne\f\f ,\fnoises\fwhich\fcome\ffrom\fthe\fvehicle\f\bnd\fwhich\fc\bn\fbe\fhe\brd,\ffelt\f\bnd\fnoticed\f
inside\f\bnd\foutside\fthe\fvehicle.\f
These\fterms\f\bre\fgrouped\ftogether\funder\fthe\ftitle\fNoise,\fVibr\btion,\fH\brshness,\for\fNVH\ffor\f
short.\f
The\ft\bsk\fof\fvehicle\fdevelopment\f\bnd\fproduction\fis\fto\fensure\fth\bt\fnoises\fc\bused\fby\fthe\f
vehicle\fdo\fnot\fdisturb\fthe\fdriver\f\bnd\fp\bssengers.\fMoreover,\fthe\fthe\fextern\bl\fnoises\femitted\f
by\fthe\fvehicle\fmust\fnot\fexceed\fthe\fthresholds\fset\fby\fl\bw.\f
NOTE:\fB\bsic\f\bnd\f\bdv\bnced\ftr\bining\fcourses\f\bre\foffered \f
for\fthe\ffollowing\fcontents.\fFor\f\bn\f
overview\fof\f\bll\fcourses\foffered,\fple\bse\frefer\fto\fthe\fFord\fService\fOrg\bnis\btion's\ftr\bining\f
course\fbrochure.\f
Noise\ftypes\f\bnd\fc\buses\f
Noi
ses\fin\f\bnd\f\bround\fthe\fvehicle\f\bre\f\bssigned\fspecific\fdescriptions:\f
Humming\f\bnd\fdroning\f\bre\fperceived\f\bs\flow\ftones.\f\f
Buzzing\f\bnd\fwhirring\f\bre\fmiddle\ftones.\f\f
Howling,\fwhistling,\fsque\bking\f\bre\f\bssigned\fto\fthe\fhigh\ftones.\f
Low\fto\fmiddle\ftones\f\bre\fconsidered\fto\fbe\funple\bs\bnt.\fThey\f\bre\fp\blp\bble\f\bnd\fnotice\bble\f\bs\f
os
cill\btions\f\bnd\fvibr\btions\fthroughout\fthe\fbody.\fLoud\fhowling\f\bnd\fwhistling\fis\fp\binful\fto\fthe\f
e\brs.\f
A\fnoise\fusu\blly\fconsists\fof\f\b\fsuperimposition\fof\fdifferent\ftones\fwhich\fspre\bd\f\bs\foscill\btions.\f
E\bch\fof\fthese\foscill\btions\fh\bs\f\b\fspecific\foscill\bting\ftime\f\bnd\fc\bn\fbe\fme\bsured\fin\f
frequencies.\fThe\ffrequency\fdescribes\fthe\fnumber\fof\foscill\btions\fper\fsecond.\fThe\ffrequency\f
unit\fis\fspecified\fin\fHertz\f(Hz).\f
The\fhum\bn\fe\br\fc\bn\fperceive\ffrequencies\fbetween\f20\f\bnd\f20000\fHz.\f
Where the different note\f come from in a vehicle: \f
Low\fnotes\f\bre\fmostly\fproduced\fby\fthe\fengine.\f\f
Low\ftones\fc\bn\f\blso\fbe\fproduced\fby\fthe\fro\bdbed,\fp\brticul\brly\fon\frough\fsurf\bces.\fThis\fis\f\b\f
fo
rm\fof\fdroning\fwhich\fc\bn\fbe\ffelt\fby\fthe\fvehicle\foccup\bnts\f\bs\fvibr\btion\for\froughness.\f\f
High\ftones\fhowever,\fwhich\f\bre\fexperienced\f\bs\fhowling\for\fwhistling\fnoises,\f\bre\foften\f\bir\f
cu
rrents\f(wind\fnoises)\for\fcome\ffrom\f\bncill\bry\fcomponents\fsuch\f\bs\fthe\fgener\btor,\fpower\f
steering\fpump\for\fdrivebelt.\f\f
There\f\bre\f\blso\fcl\bttering\fnoises\fwhich\fc\bn\foccur\fwhen\fdriving\fover\f\bn\funeven\fro\bd.\f
Th
ese\fjerking\fnoises\f\bre\fproduced\fby,\ffor\fex\bmple,\fthe\fshock\f\bbsorbers,\fch\bssis\f
components\for\floose\f\brticles\finside\fthe\fvehicle.\f
Noises\fc\bn\f\blre\bdy\fbe\fcont\bined\fwhere\fthey\foccur\for,\fif\fthis\fis\fnot\fpossible,\fc\bn\fbe\fconfined\f
wi
th\fsuit\bble\fme\bsures.\f
The\fb\bsic\fprocedures\fhere\f\bre\fthe\fd\bmping\fof\foscill\bting\fp\brts,\fthe\finsul\btion\fof\f
components\for\fthe\f\bbsorption\fof\fthe\fnoises\fthrough\f\bppropri\bte\fm\bteri\bls.\f
D\bmping\f
If\f\b\fd\bmper\fis\finst\blled\fnext\fto\f\bn\foscill\bting\fm\bss,\fthe\fch\br\bcteristic\fof\fthe\fd\bmper\fwill\f
Стр. 1 из 6
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