
Servicing Tank Suction Valves & Gaskets
1. Emptytankof(all)materialinside(elevatefrontof
truckifpossibletomakesureyougetitasemptyas
possible)
2. ElevateRearoftruckifpossibleasasafetymeasure
(anyleft-overmaterialwillowtofrontoftank)
3. OpenFill-linecap/ActivateandopenTankValve
andmakesureTankisemptybeforeremovingValve
4 OpenStrainerBoxlidandinspectvalveforother
issues(BrokenSpring/missingsnapringetc)
5. ActivateandopenTankValvebeforeremovingthe
(8)boltsattachingtheTankValvetotheStrainerBox
6. RemoveTankValveslightlyabout2inches/then
allowTankValvetoclosereleasingspringtension.
7. Marktoidentify&removeairlines,thenyoucan
remove and relocate valve to workspace.
8. Clamp valve in vise without crushing or imprinting
the gasket sealing surfaces or air chamber asm.
9. Testwithshopairorothersource(A)istheopen
sideclosesttothevalve(B)isclosed@sightglass.
10.IfTankFlangegasketistheonlyrepairneeded,
replacegasket(Greenportiontowardtank)and
proceedto#(19).
11.If Air chamber or spring require service proceed with
the following.
12.Removecapwithsightglassattached.Laypartsout
intheordertheyareremoved.
13.Loosenlocknutinside(slowly)springtensionwill
be relieved as it is removed.
14.Removeshaftandspring/payattentiontowasher
in behind spring and note where it belongs.
15.Dis-assembleairchamberpiecebypieceandreplace
O-rings,Packing&Sealsandre-assemble.
16.Re-insertshaftwithspring&washer,placevalve
nosedown/gasket@andontheoor.
17.Pressdownwardonvalveandcompressslightlyto
get lock nut started inside air chamber asm.
18.Tighten down lock nut compressing the spring and
/Inspect&cleansightglassonendcap,applythread
sealantifremoved.(Thiswillallowavisual
indicationofTankSuctionValveposition&
operation) Install Cap.
19.Re-installvalveintoviseandbenchtesttheTank
valve one more time before installing on Distributor.
20.PlaceValveasmintoStrainerBox/Installairlines
andactivateandopenTankValveasm.
21.Install510Loctitegasketeliminatoronangeand
install valve with mounting bolts.
22.Operatevalvetoopenandclosedseveraltimesto
imprintthenewgasketontankange.
23.Check and clean Strainer.
24.Check Packing seal on Strainer Lid (replace if
needed) Install and secure Strainer Lid.
25.Filldistributorandsafelytestforleaks
(*Note See an illustrated breakdown of the Tank Suction
Valves in component Illustrated breakdown section)
Servicing Spraybar Swivel Joints
*Note: Swivel joint assemblies tend to leak past the
O-ring between the 2 main component parts, changing
the mounting gaskets or tightening the nuts that secure
it to the plumbing will not x the leak.
1. Determine if the joint is able to be disassembled and
servicedorshouldbereplaced(Ifthejoint
moves too much side to side or has broken studs /
replace swivel joint).
2. MakesurethatSpraybarissuckedbackandlittleor
nomaterialisleftintheCirculatingSystem.
3. SupporttheportionofSpraybarorCirculation
Plumbing needing to be disassembled.
4. Removenuts&lockwashersthatattachthe
assembletothebarorcirculatingpipes(notethe
Grease zerk position, and which side of joint pivots
tomakesureyouinstallitthesameway)
5. SeparateandremoveSwivelJoint(Makesure
internal plumbing is intact and rigid. 3x3 Standard
Barusesapipeslipjointmethod/BigBar&
VariableWidthbars,useacouplingw/O-ringsto
getapositivesealatallconnections.OnVariable
Widthbarsthecirculatingpipemayhavetobe
removed@(2)jointstogetitremovedfromunit).
6. Ifreplacementisyourepairmethod,makesureto
clean all gasket surfaces, check internal plumbing
andreplaceO-ringsifneeded/ifservicingjoint(Go
to step # 8).
7. Install Joint with new gaskets, position grease zert
asnotedearlier,Donotovertightennutstheyare
attached to a weld on stud.
8. TodisassembleSwivelJointyouwillneedto1st
cleanthepart.(Hardmaterialwillbemuchharder
to disassemble).
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SERVICE & ADJUSTMENT PROCEDURES