JAC HFC1061 - Clutch

Clutch
Briefdescriptionofthestructure:
Theclutchequippedforthisseries
truckissingle-platedrytypedi鄄
aphragmspringclutch.Clutchfacing
iscomposedoftwofrictiondiscsand
clutch facing riveted with rivet.
Clutchpressureplatepressesfriction
discsonpillarbyusingpressure
producedbydiaphragmspringto
producejointingforce.
Adjustmentoftheclutchoperating
system:
1.Adjustthelimitscrewoftheclutch
pedaltomakesurethatthefreeplay
ofthepedalis3耀5mm.
2.Adjustthemastercylinderofthe
clutch:Loosenthelocknutonthe
pushrodofthemastercylinder,ro鄄
tatetheendofthepushrodtocon鄄
tactgentlywithpistonofthemaster
cylinder,thenrotatethepushrodfor
3/4circleinthecontrarydirection,
tightenthelocknutofthepushrod,
andtheclearance
betweenthepushrodandthepiston
isabout0.5耀1mm.
3.Adjusttheclutchreleasepump:
rotatetheadjustingnutonpump's
pushrodandhavetheclutchrelease
fingertouchtheclutchreleasebear鄄
ing.Thenrotateadjustingnutinthe
contrarydirectionandmakethefree
playofclutchreleaseforkreachto
2-3mm.Tightenthenutatlast.Part
of the vehicle model use clutch
booster.Adjustthefreeplayofthe
rockerarmendonclutchreleasefork
to3-5mm
4.Bleedairfromwheelcylinderof
theclutch
Airoroilleakageinthehydraulic
pipelineoftheclutchisnotallowed,
orelse,itcanresultinthedisability
ofthepedal,deficiencyoftheeffec鄄
tivetravelandincompletereleaseof
theclutchetc., whichmakethe
clutchnotworknormally.Theworkof
airbleedingshouldbecompletedby
twopersons.Onepersonpresses
the clutch pedal and the other
bleedstheair.
30
OWNER爷SMANUALfor
HFC1061,HFC1063,HFC1083
seriestrucks
31
Takeofftherubbercapoftheair
bleedscrewonthewheelcylinder,
linkaplasticpipeontheairbleed
screw,puttheotherendofthepipe
intothecontainerfilledwithbrake
fluid,presstheclutchpedalforsev鄄
eraltimes,fillthemastercylinderand
hydraulicpipelinewithbrakefluid,
thenloosentheairbleedscrew.Air
bubblecanbepuffedfromtheoil
ringifthereisairinthepipeline.Be鄄
forethepedalreaches thefloor,
tightentheairbleedscrew.Repeat
theoperationmentionedaboveuntil
thereisnoairbubblereleasing.
Maintenanceandadjustmentofclutch
Longtimeuseorincorrectadjust鄄
mentandincompleteairbleedingof
theclutchcancauseincompletere鄄
leaseoftheclutchandmakethe
clutchinhalfcontactstateforalong
time,whichaggravatewearingofthe
clutchpressureplateandfrictionlin鄄
ings.Decrepitating,burningandex鄄
foliationofthefrictionlining,and
burnoutofthereleasebearingcan
evenresultintheabnormaloperation
oftheclutch.Whendoingmainte鄄
nance,allkindsofclearancesofthe
clutchmustbeadjusted.Whendoing
class-threemaintenance,cleanthe
masterpumpanddistributorpump
andliquidreservoirtank,fillingthe
newlubricationintotheinsideofre鄄
leasebearing.
1.releasefork 2.dustcover
3.copperwasher 4.releasecylinder
5.wrench 6.softplasticpipe
7.container 8.braking