Instructions to bleed hydraulic system – Wellsaw 1318-SA User Manual

Page 13

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Wellsawmodels:1118SA,1318ͲSA,1316SͲSA,



AlsosawswithPoweredFrameLiftOption

Ͳ

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

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