PS Magazine - FEBRUARY 1977
PS, The Preventative Maintenance Monthly
ISSUE 291
FEBRUARY 1977
:
.
Sure, your clutch is tougH. All of tHat engine power goes tHrougH tHe clutcH to
tHe rest of tHe drive train-transmission± driVe sHaft± axles and w²eels-to
move tons of truck and Payload-uP HilLs³tHrougH muD´
But youR clutcH Has its soFt side-not as soFt as veµ¶et but not near as HaR· as
stEeµ¸ THa¹'s tHº "FacinG» on tHe ste¼µ clutcH ·isk½
WHen tHe clutcH is engaGed± Heavy springs press tHe clutcH disk agaIns¾ tHe
CLUTCH DISK:
The clutCh disk
moves ahead to tHe flywhEel AnD
bacKs aWay From tH± ²LyWHeel-
by slIdIng On tHE SpLineD pArt OF
³he transmIssIon
Inpu³ shAFt.
´here's "²AcIngµ on bOtH sIDes OF
³hIs
cLUtch
DIsK.
THIs
FaCing
weArs dOWn In nOrmAL OPErAtiOn
As I³ gets rUBbE¶ BEtweEn tHe
s³eeL FlYheel And stEEl presSUrE
·,Ate¸
{
engine flywHeel´ ¿He facinG on tHe clutcH ·isk "clutcHes» tHe FµywHEeÀÁ So tHe
flywHee Ãurns tHe clutcH diskÄand tHe clutcH ·isk turns tHe sHaft goinG into
tHe transMissionÅ
Æet's face it-tHe ÇUtcH disk facing makes youR clutcH tHe weakes¹ µink in
your truckÈs poÉer train´ Êven if you treat your clutcH rigHtË tHe FacinG wilµ
steadily wear out fRom OnÌoff contact witH tHe engÍne flywHeeµÎ
.±² it shOW5 ³ow P´µER Ge¶· Fr¸M
Y´u¹ ºNg»n¼ ½¾ y¿ÀÁ ÂÃAÄÅmÆÇÅÈÉÊ ËÌÍ
ÎÏÐ aÑd ÒÓÔ ÕÖ× ØÙÚÛ ÜÝÞß
pàáâã äå
'æç èfé/ê
'•
ëìlìíSî lîVîëSï
¹ower²ul sprIngs
push ³he ºnNer enDs o² ³he release
levers bacK»so ³he ou³er enDs o² ³he
release levers are ²orceD ²orwArD. ¼he
levers
push
³he
pressure
pla³e
²orwarD»³owarD ³he engIne ²l½wheel.
´hIs squeezes ³he cLu³ch DIsK be³ween
³he pressure pla³¾ anD ²l½wheel. ¿nD
³hºs maKes ³he clu³ch DIsK ³urn ³he
³ransmIssIon Inpu³ sha²³¸
ëìlìíSî ðñëKï
Àour clu³ch peDal ºÁ
hooKeD
uÂ
³o ³he release ²orK bÃ
ÄlºnKageÅÆ Çhen Ãou press harD on ³he
clu³ch peDalÈ Ãou press ³he ³hrowou³
bearIng agaºns³ ³he release leverÁ¸ ¼hºÁ
pulLs ³he pressure pla³e backÉanD
³aKes ³he squeeze o²² ³he cluÊch DIsKÆ
Ëo ³he clu³ch DIsK quI³s ³urnIng ³hÌ
³ransmIssIon Inpu³ sha²³¸
.±
-²³´µ,¶"·'¸
òóëñôñõò
´he
³hrowou³
bearIng rIDes
²ree on ³he bIg smoo³h par³ o²
³he
³ransmIssIon
Input
sha²³ÍÎun³Il Ãou pu³ I³ to
worK¸ ´hen ϳ moves ²orwarD ³o
³He release Levers»anD s³ar³s
spInnIng as soon as I³ ³ouchesÐ
³he release levers¸
ö÷
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