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,page19.Thebearingsaretaperedand,
ifdamaged,mustberemovedfromtheoutside.
Thisrequiresdisassemblyoftheuidsection.
SeeCenterSectionRepair,page17.
7.Cleanallpartsandinspectforwearordamage.
Replaceasneeded.
Using Using
UsingDiaphragm Diaphragm
DiaphragmInstall Install
InstallTool Tool
Tool
Ifrepairsinvolveremovalofuidcovers,thesesteps
willeaseinstallationofuidcovers.Thesesteps
shouldbeperformedpriortoreassemblyoftheair
valvebecausetheairvalvecongurationwillbe
modiedtoaiduidcoverinstallation.
Thediaphragminstalltoolkit24V543isavailable
separatelyandissuppliedwithreplacement
diaphragmkits.
1.Iftheairvalveassemblyhasnotbeen
disassembled:
a.Removetheairvalvecover(109)andgasket
(118).
b.Removethevalvecartridge(105)andboth
pistons(114).
c.Insertthetravelrestrictors(2)fromthe
diaphragminstalltoolkitintotheactuator
pistons(E).Lubricatetheu-cupsandinsert
theactuatorpistonsinthebearings(115),
wide wide
wide
endrst.Leavethenarrowendofthe
pistonsexposed.
d.Proceedtostep4below.
2.Iftheairvalveassemblyhasbeendisassembled,
performstep1throughstep4oftheairvalve
reassemblyprocedure.
3.Installtheu-cups(106)ontotheactuatorpistons
(E)andinsertthetravelrestrictors(2)fromthe
diaphragminstalltoolkitintotheactuatorpistons
(E).Lubricatetheu-cupsandinserttheactuator
pistonsinthebearings(115),
wide wide
wide
endrst.
Leavethenarrowendofthepistonsexposed.
4.Installthesupplieddiaphragminstalltool(1)so
thatthearrow(A)pointstowardthesideofthe
pumpwiththediaphragmagainsttheaircover.
Installtheairvalvegasket(C)andcover(B).
Snugtheairvalvecoverscrews.
5.Lubricatetheinnersurfaceofbothcoverclamps
withwaterproofsanitarylubricant.Installthe
coverandclamponthesideofthepumpwith
thediaphragmagainsttheaircover.Leavethe
clampslightlytightenedbutlooseenoughto
allowminorcoverrotationtoallowforalignment
withtheinletandoutletmanifolds.
6.Supplythepumpwithlowpressureair,just
enoughtomovethediaphragm.Useabout10to
20psi(0.07MPa,0.7to1.4bar).Shopairmay
beused.Thediaphragmwillshiftsothesecond
uidcoverwillseatproperly.Keepairpressure
on.
7.Installtheremaininguidcoverandclamp.
8.Removeairsupplyfrompump.
9.Removetheairvalvecover(B),gasket(C)and
thetool(1).
10.Removethepistons(E)andthetravelrestrictors
(2).
11.Lubricateandinstallthepistons(E).
12.Tocompleteassemblyoftheair
valveassembly,proceedtostep6of
ReassembleAirValve,page11.
103A6780C
