Graco SaniForce 4150 - Fluid Suction and Outlet Lines; Tips to Reduce Cavitation

Repair
5.Inspectthevalveplate(110)inplace.If
damaged,useaTorx(T20)screwdriveror7mm
(9/32)in.)socketwrenchtoremovethethree
screws(107).Removethevalveplate(110).
6.Inspectthebearings(113,115)inplace.See
Parts,page22.Thebearingsaretaperedand,
ifdamaged,mustberemovedfromtheoutside.
Thisrequiresdisassemblyofthe󰘱uidsection.
SeeCenterSectionRepair,page19.
7.Cleanallpartsandinspectforwearordamage.
Replaceasneeded.
Reassemble Reassemble
Reassemble
Air Air
Air
Valve Valve
Valve
NOTE: NOTE:
NOTE:
Ifrepairsinvolveremoving
󰘱uidcovers,performthestepsin
ReassembletheOvermoldedDiaphragms,page17,
priortoreassemblyoftheairvalve.Theairvalve
con󰘰gurationwillbemodi󰘰edtoaid󰘱uidcover
installation.
1.Ifthecentersectionwasdisassembledto
replacethebearings(113,115),complete
theCenterSectionRepair,page19,before
continuingwiththeairvalvereassembly.
2.Installthevalveplate(110)inthecavity,seal
down.Installthethreescrews(107),usinga
Torx(T20)screwdriveror7mm(9/32in.)socket
wrench.Tightenuntilthescrewsbottomouton
thehousing.
3.Installano-ring(108)oneachpilotpin(112).
Greasethepinsando-rings.Insertthepinsinto
thebearings,
narrow narrow
narrow
end󰘰rst.
4.Installu-cups(106)oneachactuatorpiston
(114),sothelipsofthepackingsfacethe narrow narrow
narrow
endofthepistons.
5.Greasethelowerfaceofthepilotblock(116)and
installsoitstabssnapintothegroovesonthe
endsofthepilotpins(112).
6.Lubricatetheu-cups(106)andactuatorpistons
(114).Inserttheactuatorpistonsinthebearings
(115),
wide wide
wide
end󰘰rst.Leavethenarrowendof
thepistonsexposed.
7.Greasethelowerfaceofthevalvecarriage(119).
8.Installthevalvecarriage(105)soitstabsslipinto
thegroovesonthenarrowendoftheactuator
pistons(114).
103A6782F