Instructions to bleed hydraulic system – Wellsaw 1318-SA User Manual
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Wellsawmodels:1118SA,1318ͲSA,1316SͲSA,
AlsosawswithPoweredFrameLiftOption
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Aircanenterthesystemthroughaleakorifthesystemisrunwithlowoillevel.Also,ifthesawheadis
liftedmanuallyaircanenterthesystem.Airwillaccumulateundertheliftingpistonandcanbebledat
thefittingatthebottomoftheliftingcylinderwiththepistonatthebottomofitsstroke.This
procedureisdonewithtwotechnicians.
TofilltheAir/OilReservoir:
1. Movesawheadto"down"position.
2. Disconnecttheairlinefromtheprimaryregulator.
3. Locatethefillportonthelegofthesaw.Thereisasquareheadpipeplugintheport.Removetheplug.
Thereservoirisinsidetheleg.
4. Locatetheairline(blackrubberhose)atthetopoftheAir/OilReservoir(insidethesawleg).Remove
thislinefromthefitting.Thiswillallowyoutoaddoilinthefillportwithouttheoilflowingdowninto
thecontrolvalveassembly.Whenyouhavethislineoffyoucannotoverfillthesystem.Addasmuchoil
asitwilltake.
5. Slowlypouroilintothefillportuntilitwilltakenomore.
6. ReͲinstallplugandattachairlinetotopofthereservoir.
7. ReͲattachshopairatregulator.
Tobleedtheairfromthehydraulicsystem:
1. Removeairpressurefromprimaryregulator.
2. Fillthehydraulicsystemthroughthefillelbowonthefrontofthesaw.
3. Lowersawheadtotherestandleavethefeedcontrolknobatposition2ormore.
4. Findtheflatsonthetopofthecylinderrod.Withanopenendwrench,turntheroddown(outofthe
clevis)untilthepistonbottomsinthecylinder.Youwillseethesawheadbegintoraisewhenthe
pistonbottomsout.
5. ReͲconnectshopairpressure.Adjusttheprimaryairregulator(mountedonthesawleg)to10psi.The
pressureshouldbeadjustedhighenoughtobleedthelinebutnotenoughtoraisethesawhead.
6. OnSemiͲAutomaticsaws,setthevisetothecloseposition.
7. SawswithFeedSelectorSwitchshouldbesetwithselectoratFEED.
8. HaveonetechnicianpressandholdtheFrameRaisebutton.Thesecondtechwillslightlyopenthe
hydrauliclineatthebottomoftheliftingcylindertobleedoiluntilitisclearofairbubbles.
9. Tightenfittings.
10. Refillthereservoirasneeded.
11. Repeatuntilnoairappearsatfitting
12. Adjustthecylinderrodbackupintotheclevisandtighten.
Forsawswithsightgauge
Tochecktheoillevelwiththesightgauge,
1.Lowerthesawhead
2.Disconnecttheshopair
3.Opentheballvalveatthetopofthegauge(handlewillbeparallelwiththetube)
4.Theoilfillportisthebrassfittingatthetopofthegauge.Ithasasmallpipeplug
5.Theoillevelshouldbenearthetopofthesightgauge
6.Whendoneclosetheballvalve(returnthelevertothehorizontalposition)
7.Reconnecttheshopair
Instructions to Bleed Hydraulic System