maintenance | by Tom Jackson
TJackson@randallreilly.com
Understanding
hydraulic fluid
It���s more
than just
a low
viscosity
engine oil
E
ngine lubricating oils get a lot
of attention in
heavy equipment
maintenance
schedules and for good reason. They must be changed
every 250 to 500 hours, they
bear the brunt of all the
heat, soot and a pressure
cooker environment inside
today���s emission compliant
engines.
Hydraulic fluid at left clearly
separates out, or de-emulsifies,
the water that accumulates
in the system. Engine oil on
the right emulsifies the water
making it less efficient as a
hydraulic fluid.
EquipmentWorld.com | March 2013 19
EW0313_Maintenance.indd 19
2/25/13 11:16 AM
