Oil Filter Cartridges

The filter cartridge acts both by absorption and adsorption in a continuous recycling process. The long fibres of the cartrodge's paper attract the water - formed through the combustion process - and absorb it like a sponge, at the same time rejecting the large oil molecules which are forced to pass between the tight windings of the cartridge. As the oil passes through the cartridge, minute carbon, wear metal, and silicon particle are extracted from the oil by adhering to many surfaces of the filter - a process known as adsorption. By removing this water, the cartridge inhibits the production of acids, which both degrade the oil and cause excessive wear on machinery. The simultaneous removal of minute contaminants as they occur, enable the life span oil to be extended within its original operating specification.

Important Note

While the filter is extracting the water and contaminants it is continuously safeguarding the desirable elements compounded within the actual oil in use. These typically include, dependent on use, dispersants, detergents, oxidation and rust inhibitors, metal de-activators, pour-point depressants, VI improvers, lubricity agents, fungicidal, anti-foaming and gelling additives. These additives are held in suspension and their levels can be critical if the oil is to maintain its beneficial effect.

Output levels are dependent on viscosity, temperature, degree of contamination and oil pressure. Guide - For SAE 15w/40 oil @ 70c/ 60psi/ 4.4Kgcm2 - 0.44gpm/ to 0.65gpm/ 3.0lmp.

Within operating specifications of engine, gear and hydraulic oils.

Particulate contamination in accordance with BS 5540 part4: 1981 and ISO/DIS 4406 ISO 14/9 equivalent to NAS 1638 class 6. (hydraulic oil specification)

Light Duty Filter Unit (9768) and Light Duty Cartridges (1868)

• For engines with an oil sump up to 3 gallons/15 liters.

Heavy Duty Filer Unit (9778) and Heavy Duty Cartridges (1878)

• For engines with an oil sump up to 9 gallons/40 liters
• For hydraulic systems with tanks up to 120 gallons/540 liters
• As a diesel fuel filter in full flow

Super Duty Filter Unit (9788) and Super Duty Cartridges (1888)

• For engines with an oil sump up to 17.6 gallons/80 liters
• For hydraulic systems with tanks up to 300 gallons/1360 liters
• As a diesel fuel filter in full flow

Light Duty

• Unit: 9768, Cartridge: 1868
• Water Retention: 0.07 gall/ 0.32 litres
• Unit Height: 160 mm
• Unit Diameter: 120 mm
• Cartridge Height: 105 mm
• Cartridge Diameter: 103 mm

Heavy Duty

• Unit: 9778, Cartridge: 1878
• Water Retention: 0.12 gall/ 0.56 litres
• Unit Height: 165 mm
• Unit Diameter: 168 mm
• Cartridge Height: 105 mm
• Cartridge Diameter: 143 mm

Super Duty

• Unit: 9788, Cartridge: 1888
• Water Retention: 0.26 gall/ 1.0 litres
• Unit Height: 180mm
• Unit Diameter: 212 mm
• Cartridge Height: 105 mm
• Cartridge Diameter: 198 mm

Water Retention

Down to less than 0.05%

The KLEENOIL High Pressure oil filter can be fitted on the Bypass basis; to hydraulic systems, compressors, or any system with oil at pressure up to 3000 PSI

The flow thought the KLEENOIL filter is controlled to approximately four litres per minute at 40 PSI. A flow rate which is low enough to have negligible effect on most system pressures, yet high enough to ensure that oil is being kept in As New condition.

Water Retention

To less than 0.025%

National Aerospace Standard

NAS Grade (National Aerospace Standard 1638), the NAS Grade is widely adopted standard to measure the contamination degree of hydraulic oil.

• Heavy Duty (1878) - 0.56 L.
• Super Duty (1888) - 1.0 L.

To reduce the operating cost of your hydraulic equipment follow the below information:

• Don't change the oil - filter it.
• Water or particle contamination rarely necessitates an oil change - unless the contamination has resulted in additive depletion or base oil degradation. These contaminants can be removed from hydraulic fluid by filtration.
• Prefill piston pumps and motors to prevent infant mortality.
• When installing a piston pump or motor, always fill the case of the unit with clean hydraulic fluid prior to start-up. Failure to do so almost guarantees dry-start failure. If the unit is mounted in a vertical position and the case drain line is flexible, use this technique to fill the case:

1. Position the pump or motor horizontally (case drain port up) within reach of the case drain line.
2. Fill the unit with clean hydraulic fluid through the case drain port.
3. Connect the case drain line.
4. Mount the unit in position.

Research has shown that maintaining fluid cleanliness at ISO 4406 14/11 will result in a tenfold gain in the average time between breakdowns when compared with a fluid cleanliness level of 22/19. This is based on the findings of a three-year study of 117 mobile and industrial hydraulic machines to determine the correlation between fluid cleanliness and breakdown frequency.

Particle contamination reduces the service life of hydraulic fluid by stripping additives and promoting oxidation. Additives attach to particles, which are then removed by the filters or settle to the bottom of the reservoir. Wear metal caused by particle abrasion is a catalyst for fluid oxidation.

Where fluid leaks out, contamination gets in. Given that studies have shown that it costs 10 times more to extract contaminants from hydraulic fluid than it does to exclude them, the immediate rectification of hydraulic system leaks not only minimizes the cost of clean-up, disposal and replacement fluid, it also saves the hidden cost of removing ingested contaminants.

Standard filler-cap breathers fitted to the majority of hydraulic reservoirs are not effective in preventing ingression of airborne contaminants. All air entering the reservoir should be adequately filtered. In damp environments (e.g. marine applications, tropical climates) desiccant breathers are essential to prevent the ingression of airborne moisture. Remember, it costs much less to exclude contamination than it does to extract it.

An important step in the cylinder repair process that is often skipped by DIY repairers, is the checking of rod straightness. Bent rods cause distortion, and ultimately, premature failure of the rod seal(s). Rod straightness should always be checked when a cylinder is being re-sealed or repaired.

NPT is the least reliable type of connector for high-pressure hydraulic systems because the thread itself provides a leak path. The threads are deformed when tightened and as a result, any subsequent loosening or tightening increases the potential for leaks. Replace pipe thread connections with soft seal connections such as UNO or BSPP for leak-free reliability.

Hydraulic hose manufacturers estimate that 80% of hose failures are attributable to external physical damage through pulling, kinking, crushing or abrasion of the hose. To prevent external damage, ensure all clamps are kept secure, pay careful attention to routing whenever a replacement hose is installed and if necessary, apply inexpensive polyethylene spiral wrap to protect hoses from abrasion.

Maintain cylinder rods and wiper seals in good condition. Worn or damaged wipers and pitted or gouged rods give dust and other contaminants an easy path into the system. Fitting rod protectors (bellows) to cylinders operating in abrasive or corrosive environments can extend rod and wiper seal life and provides and extra barrier to the ingression of contaminants via the cylinder rod.

Brendan Casey has more than 20 years experience in the maintenance, repair and overhaul of mobile and industrial hydraulic equipment. For more information on reducing the operating cost and increasing the up-time of your hydraulic equipment, visit his web site at www.hydraulicsupermarket.com