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RE: Slide Valves Hydrl. oil type

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#5755

Walter Stinson
Participant

Essa,
Your problems are similar to others and your noted problems may be independent but may also be related.
A) Excess Heat: normally comes from a warn pump or a point of bypassing fluid to tank. If your ambient temps are always high it may be a problem with the water/glycol based fluid (Chemloube) and evaporation of water content. Does your system have any type of heat exchanger?
b) Changing fluid: There is always a lot of concern when changing from a water/glycol based fluid to a synthetic fluid such as the Mobil SHC500 type. The number one problem would be seal compatibility throughout the system. The second problem would be getting all of the water/glycol out of the system.
c) Hydraulic Leaks:  Systems utilizing a water/glycol based fluid such as the Chemolube (is this the Chemolube H Special by Hytek?) require seals different than the synthetic fluid noted.
 
Questions;
Who is manufacturer of your system? Who is manufacturer of your hydraulic cylinders? How old is your system? Is Chemolube the original fluid from the OEM? have you done a fluid analysis later to check chemistry (mechanical stability) and contamination levels.
  

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