Gast SOA Series Operation & Maintenance Manual

Contents

troubleshooting guide

Gast SOA Series Operation & Maintenance Manual Manual pdf 7 page image

7TROUBLESHOOTING GUIDESERVICE KIT INSTALLATIONNOTE: Gast will not guarantee performance of a field-rebuilt unit. Return unit to a Gast Authorized Servicefacility, or perform rebuild procedures described below.Kits contain most or all of the following: Head Gasket, ValvePlate Assembly, Retainer Plate Screws, O-ring, and Cup.Kits are used for several models and may contain extraparts not applicable for your specific model. Refer toexploded view.Disassembly:1. Disconnect unit from power source.m WARNING Disconnect power before servicing toavoid electric shock.2. Vent all air lines to unit to remove pressure.m WARNING Vent all air lines to unit to remove pressurebefore servicing it. Failure to do so canresult in severe personal injury.3. Remove head bolts.4. Remove gasket, head, and valve plate assembly(Note orientation of head assembly for re-assembly).5. Carefully remove cylinder and shims (Be sure toreplace all shims, as they are matched to cylinder androd assembly height dimensions). Remove two retainerplate screws on retainer plate (may require heat tobreak adhesive on retainer screws) and discard old cup.6. Clean residue from cylinder walls with soft clothusing non-petroleum, non-oil-based solvent. DO NOTuse kerosene, gasoline, or any flammable substance.Re-assembly:7. Replace cylinder and shims.8. Place retainer plate in new cup and push both downinto cylinder.9. Install new retainer plate screws and torque to 35 in-lbs.10. Install O-ring into groove of cylinder11. Install valve plate, head gasket (note gasket orientation),and head, on cylinder so ports are in original orientation.12. Install and snug all head bolts and torque to 80 in-lbs.NOTE: Before putting unit into service, ensure that anyexternal accessories such as relief valves andgauges attached to head have not been damaged.EDIUGGNITOOHSELBUORTnosaeRelbissoP erusserP woLmuucaV muucaV muucaV muucaV muucaVevissecxEesioN esioN esioN esioN esioN gnitaehrevO t'noWtratS tratS tratS tratS tratSwoL hgiHretliFytriD X XrelffuMytriD X X XsevlaVytriD X XsevlaVdegamaD X X X XpuCnroW/degamaD X XgnimmihSrednilyCreporpmI X X X X X XesoHykaeL X XevlaVkcehCykaeL XeniLerusserPromuucaVdeggulP X X X X XegatloVwoL X X X XevlaVfeileRykaeL X X

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