![](/images/backgrounds/198971/bg1c.png)
Repair
Repair Repair
Repair
Repairing Repairing
Repairingthe the
theMain Main
MainAir Air
AirRegulator Regulator
Regulator
NOTE: NOTE:
NOTE:RepairpartsareavailableinKit17C131
(EQ600)orKit17C129(EQ300).
1.PerformPressureReliefProcedure,page8.
2.Makesurealloftheairpressureisrelievedin
theunit.Removethewaterseparatorlterfor
accesstothepistoncoverandreturnspring.
3.Useacrescentwrenchthatcanopento2in.(5
cm)tounscrewthepistoncover.
NOTE: NOTE:
NOTE:Thereisaspringinsidethiscover.
4.Unscrewthediaphragmcoverforaccesstothe
diaphragmandtotheendofthepistonshaft.
5.Removethediaphragmandinspectforany
cracksortears.Replacethediaphragmif
necessary.
6.Carefullyremovethespringandpistonassembly,
thencleanoutanydebrisinthebodyofthe
regulator.
7.Pushthepistonshaftandremovethepistonfrom
theoppositeendoftheregulatorhousing.
8.Inspectthepistonforanyforeignmatterthatmay
havebeenthecauseforthepistontostayopen.
9.Inspectforanydamagetothepistonshaftwhere
itinteractswiththediaphragmcup.
NOTE: NOTE:
NOTE:Excessivewearhereindicatesthe
maincheckvalveisnotsealing.Contactyour
distributorifthishappens.
28 334667B