AIR COMPRESSOR - MIDLAND BRAKE MODELS EL-1300, EL.1600TROUBLESHOOTING GUIDE (Continued)CONDITIONPOSSIBLE CAUSERESOLUTIONNoisy operationLoose drive pulleyTighten repair, or replace pulley asnecessary.Restrictions in cylinder head orRepair or replace as necessary.discharge line.Worn or burned out bearingsReplace bearings as necessary.Compressor not getting properService lubrication system aslubricationnecessary.Excessive wearOverhaul or replace compressoras necessary.Compressor not unloadingDefective unloader pins or sealsReplace pins/seals as necessary.(excessive pressure.)Defective governorRepair or replace governor asnecessary.Reservoir line to governorRepair or replace line asrestrictednecessary.Unloader mechanism binding orRepair unloader as necessary.stuck.Gauge defectiveReplace gauge as necessary.Compressor passes excessive oilExcessive wearOverhaul or replace compressoras necessary.Dirty air cleanerClean or replace element asnecessary.High inlet vacuum (obstructedService intake as necessary.intake).Small or restricted oil return lineRepair or replace return line asflooding compressornecessary.Excessive oil pressureService lubrication system asnecessary.Defective or worn oil seal in rearReplace seal as necessary.bearing cap.Piston rings improperly installedRemove and reinstall asnecessary.Back pressure from engineCheck engine ventilation system,crankcaseexcessive engine blow by (pistonrings).Intake pipe restricted, too long orRepair or replace pipe astoo smallnecessary.CTS-4077Y - Page 5
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