October 2008 "2033ES / 2633ES" Service & Parts Manual - ANSI Specifications
Page 1-2
HYDRAULIC FLUID
Handling Precautions
PERSONS IN REGULAR CONTACT WITH MINERAL-BASED
HYDRAULIC FLUID NEED TO BE AWARE OF THE IMPORTANCE OF
THOROUGH HYGIENE, AND THE PROPER METHODS FOR
HANDLING MINERAL OILS IN ORDER TO AVOID POTENTIAL
HAZARDS TO HEALTH.
If mineral-based hydraulic fluid is SPLASHED INTO THE EYES, it must be WASHED OUT
THOROUGHLY using abundant quantities of water. If irritation persists, medical advice should be
sought.
HYDRAULIC FLUID UNDER PRESSURE CAN PENETRATE AND
BURN SKIN, DAMAGE EYES, AND MAY CAUSE SERIOUS INJURY
OR BLINDNESS.
FLUID LEAKS UNDER PRESSURE MAY NOT ALWAYS BE VISIBLE.
Fluid Recommendations
MEC recommends the use of ISO Grade 32 hydraulic fluid. A 150SSU EQUIVALENT substitute
can be used if absolutely necessary. Mineral-based hydraulic fluids produced by different compa-
nies will USUALLY mix with each other satisfactorily, but this IS NOT RECOMMENDED. When in
doubt, consult with your supplier.
ISO Grade 32 has proven to be suitable for use in all climates. For continued operation in tem-
peratures below 32 °F (0 °C), use of an ATF hydraulic fluid is satisfactory.
The only exception to the above is to drain and fill the system with ATF fluid or its equivalent. This
will also start up at temperatures down to -20 °F (-29 °C). However, use of this fluid will give poor
performance at temperatures above 120 °F (49 °C).
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