Troubleshooting the REN™ Oil Level Regulator Technical Bulletin

Technical BulletinTroubleshooting theREN Oil Level RegulatorMaintenancePreventive Maintenance Performedat Oil Change:• Clean regulator body• Inspect all gasket area of regulator for leaks• Note oil level before oil change (for leveloptimization)Check the Following for Secure Fit:• All fittings / hose connections• Hose routing• Mounting bolts• Electrical boltsTypical InstallationFreshOil TankEngineFuel Return LineRemoteReadoutCheckValveVent Line ToCrankcaseOil LevelRegulatorPressureGalleryTo Fuel Tank orCollection TankSlow Flow MeterContinuousOil ChangeModuleLF7775 Micron Filter(Optional)Used Oil TankFuelTank1/2" (12.7 mm)Hose or PipeConnection FromClean Oil Supply

TroubleshootingOverfill SituationProblem: Sight Glass FloodedProbable Causes:1. Excessive Pressure From Oil SupplyTankPressure at the regulator CANNOT exceed4 psi (27.6 kPa). Many variables affect headpressure. Verify pressure and reduce ifnecessary.2. Excessive Crankcase PressureLocate the auxiliary crankcase vent.Remove the brass vent plug in the top ofthe unit. Install a 1/4" NPT (6.4 mm) fittingwith a 3/8" (9.5 mm) ID hose (minimum)and route to a non-pressure or non-vacuumport (valve cover).Note: The port must be higher than the oillevel in the sump. For best performance avent line should be fitted.3. Base Adjustment IncorrectMake the following adjustments:a. Turn the engine off and check theengine oil level. If adjustment is needed,drain or add oil until the level is halfwaybetween the low and full markings onthe dipstick.Note: This level should be the onemaintained. Levels higher than this canresult in excessive oil consumption.b. Start the engine.c. Adjust the regulator so that the oil levelcomes up to the center of the body.d. Tighten the mounting bolts.4. Float Assembly Failure (Rare)Contact Fleetguard Customer Assistance atthe number shown below.TroubleshootingUnderfill SituationProblem: Sight Glass EmptyProbable Causes:1. Base Adjustment IncorrectMake the following adjustment:a. Turn the engine off and check theengine oil level. If adjustment is needed,drain or add oil until the level is halfwaybetween the low and full markings onthe dipstick.Note: This level should be the onemaintained. Levels higher than this canresult in excessive oil consumption.b. Start the engine.c. Adjust the regulator so that the oil levelcomes up to the center of the body.d. Tighten the mounting bolts.2. Hose or Fitting ObstructionCheck for plugged hoses or fittings going tothe regulator. Unplug and clean, thenreconnect.Note: Follow suggested hose size andcommon hose routing to avoid kinking (perinstallation instructions).3. Float Assembly Failure (Rare)Contact Fleetguard Customer Assistance atthe number shown below.TB05/04-1 - Rev 2©2004 Fleetguard Inc.Printed in the U.S.A.For more information, contact Customer Assistance at 1-800-22-FILTER (1-800-223-4583),fax 1-800-999-8664, or visit us at www.fleetguard.com