Toro 99051SL Manuel D’Utilisation

Hydraulic Oil Filters

Hydraulic Filters 

OEM vs. Will Fit 

Contamination Causes Most Hydraulic 

System Failures 

•  Over 75% of all Hydraulic System failures are a 

direct result of contamination. 

•  Increased repair cost resulting from: 

How Contamination Damages 

Hydraulic Systems 

•  Contamination interferes with the four main 

functions of the Hydraulic Fluid. 

as an Energy Transmission Medium. 

– Loss of Production (down time) 

– Component Replacement Costs 

– More Frequent Fluid Replacement (And Disposal) 

– To Act  

– To Lubricate Moving Parts. 

– To Act as a Heat Transfer. 

– To Seal Small Clearances. 

There are a lot of filter suppliers currently 
manufacturing and selling filters for turf mowing 
equipment.  Through this program we will try to 
explain the differences between "will-fit" filters and 
genuine OEM filters. 

First lets look at hydraulic system failures.  It is
believed that over 75% of all hydraulic system
failures are caused by contamination.

These failures cost your business money through
lost production, the unit is down.
There is cost associated with replacing the failed
component.
And if the oil is contaminated to the point that it
needs to be replaced early, that to will add
additional operating costs.
All of these costs can be avoided by properly
maintaining the equipment and keeping the
hydraulic oil clean.

Contamination in the oil can inhibit the four main
function of the oil.
The oil is what actually transmits the energy (work)
through the system.
The oil also has to lubricate the system.
The heat in a hydraulic system is carried away and
dissipated by the oil. And the oil will seal up the
small clearances in the hydraulic system.

Contamination, be it water or dirt and metal, will
limit the oils ability to perform these functions.