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COMMON FILTER PROBLEMS

* BASIC ENGINE LUBE SYSTEM

* How The System Works

* OVER PRESSURIZED LUBE OIL

FILTERS/SYSTEMS* Bloated Filter Can and/or Displaced Gasket

* RUPTURED DOUBLESEAM

* DENTED FILTERS & THEIR

EFFECTS* A Dent In The Filter Can Make It Susceptible To Fatigue

Failure.

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COMMON FILTER PROBLEMS

* COLLAPSED CENTER TUBE

* MISAPPLICATION

* Visually Matching Filters Can Cause

Engine Damage

* OIL PUMP PRIME* NO OIL PRESSURE AFTER OIL/FILTER CHANGE

* LOW OIL PRESSURE

* BLOATED CARTRIDGE FILTERS

* Outer Body Coming Apart At The Seam

BACK

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FULL-FLOW LUBE SYSTEM COMPONENTS

•OIL PAN RESERVOIR

•OIL PICK-UP SCREEN

•OIL PUMP

•PRESSURE REGULATING VALVE•This Valve Is Usually In Or Next To The Oil Pump

•OIL FILTER

•FILTER BY-PASS VALVE•The By-Pass Valve Is Designed To Allow The Oil To By-Pass The Filter In The Event The Filter Becomes

Plugged

•The By-Pass Valve Location And Settings Are Determined By The “OE” Manufacturer

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FULL-FLOW LUBE FILTER SYSTEM

FILTER BY-PASS VALVE

OIL PUMP PRESSURE RELIEF VALVE

OIL PRESSURE GUAGE

CLICK ON THE FILTER

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OVER PRESSURIZED LUBE/FILTER SYSTEM

• From time to time, filters are returned because the filter is bloated (swollen) or the gasket was found pushed out of the retaining groove. The tendency is to think this is a filter problem.

• This problem is caused by an over pressurized lube system.

• The lube system pressure is controlled by a pressure regulating valve. Occasionally, the regulating valve could stick in the closed position causing a pressure spike.

• The result is the filter appears to be swollen and possibly the gasket was pushed out of its groove.

• TO SEE A DISPLACED GASKET DEMONSTRATION - CLICK HERE

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OVER PRESSURIZED LUBE SYSTEM

(STATIC BURST TEST)

WATCH THE FLUTES AS THE PRESSURE INCREASES

CLICK ON THE FILTER

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DOUBLESEAM FAILUREANOTHER OVER PRESSURIZATION PROBLEM

CLICK ON THE FILTER

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IT TAKES 300+ PSI AND THE FILTER MUST BE SEVERELY OVERTIGHTENED TO RUPTURE THIS SEAM

WATCH THE FLUTES AS THE PRESSURE INCREASES

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DENTED FILTERS & THEIR EFFECTS

• Filter manufacturers often receive used filters, being returned due to a crack in a filter can.

• In many cases the crack is located within or near a dent in the can.

• Once dented, the can becomes more susceptible to fatigue.

• The fatigue to the material results from pressure pulses within the system.

• The metal in the dented area is continually flexing in and out in response to the system pressure pulses.

• Over a period of time the metal will fatigue to the point of cracking, which will result in a leak.

TO SEE A DEMONSTRATION - CLICK HERE

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DENTED FILTERS & THEIR EFFECTS

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CLICK ON THE FILTER

WATCH THE DENT

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Collapsed Center Tube High differential pressure

DIFFERENTIAL PRESSURE IS THE RESTRICTION READING ACROSS THE MEDIA. A MINIMUM OF 100+ POUNDS OF DIFFERENTIAL PRESSURE (PSID) IS REQUIRED TO CRUSH A CENTER TUBE.

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MISAPPLICATIONS

•WRONG THREAD SIZE•SOME THREAD SIZES ARE SO CLOSE IN PITCH AND

DIAMETER THAT THEY WILL SPIN ON A MOUNTING

BASE, BUT WIIL LATER LOOSEN, CAUSING THE FILTER

TO BACK OFF AND POSSIBLY FALL OFF

THEMOUNTING BASE

•WRONG BY-PASS VALVE SETTINGS

• THE BY-PASS VALVE SETTINGS ARE DETERMINED BY “OE” AND SHOULD BE FOLLOWED

•ANTI-DRAIN BACK VALVES (WHEN REQUIRED)

•USING A FILTER WITHOUT AN ANTI DRAIN-BACK

VALVE COULD CAUSE DRY STARTS

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OIL PUMP PRIME

OIL LIGHT STAYS ON OR NO PRESSURE OIL LIGHT STAYS ON OR NO PRESSURE

AFTER 30 SECONDS PARTICULARLY AFTER 30 SECONDS PARTICULARLY

AFTER OIL & FILTER SERVICEAFTER OIL & FILTER SERVICE• TURN OFF ENGINE• DISABLE IGNITION SYSTEM• LOOSEN OIL FILTER• TURN ENGINE OVER UNTIL OIL APPEARS• AFTER OIL APPEARS, RETIGHTEN

FILTER PROPERLY• ENABLE IGNITION SYSTEM• FINALLY START ENGINE, OIL

PRESSURE SHOULD BE NORMAL

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LOW OIL PRESSURE PROBLEMS

* PRESSURE SWITCH COULD BE FAULTY

* FAULTY WIRING BETWEEN THE PRESSURE SWITCH AND WARNING INDICATOR

* OIL PUMP MAY HAVE LOST ITS PRIME

* PUMP INTAKE SCREEN COULD BE CLOGGED

* OIL PUMP PRESSURE RELIEF VALVE COULD BE STUCK IN THE OPEN POSITION

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BLOATED CARTRIDGE FILTER

REVERSED FLOW(INSIDE OUT FLOW)

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