DisassemblingtheLiftValve(continued)
7.Carefullypushandtwistthespoolfromthevalvebody.
8.Beingcarefulnottoscratchthevalveborenish,removetheO-rings(spool
seals)fromtheinsideboreofthevalvebody.
9.Inspectallthecomponentsforwear,payingspecialattentiontothespool.
Signsofwearononesideofthespoolmayindicateabentspool.Inspectthe
spoolforrun-out(straightness)andreplaceitifnecessary.
AssemblingtheLiftValve
RefertoFigure61forthisprocedure.
1.Cleanallcomponentsthoroughlybeforeassembly.Removeanyresidual
siliconesealerfromthevalvebodyandcap.
2.UsenewO-ringswhenassembling.CoatallO-ringsandthespoolwithclean
hydraulicuidbeforeinstallationintothevalvebody.
3.Installthespoolintothevalvebodybeforeinsertingthecampins,check
balls,springsandhexcapplugs.Assemblethecomponentsinreverseorder
ofdisassembly.
Note:Thespoolretainingringisastampedringandmustbeinstalledwith
thesharpedgeawayfromthespacer.
4.Applyathinlmofsiliconesealertotheundercutofthevalvebodybefore
installingthecap(item16).
SandPro
®
3040and5040
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HydraulicSystem:ServiceandRepairs
20251SLRevA