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4-22 / Husky 3 Foam System
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4-10. Recommended Hydraulic Oil for Husky 3 Proportioning System
4-10.1 Characteristics
The system is delivered, charged with ISO 68 hydraulic oil. It is recommended that same or similar oil be used to
maintain optimum efficiency and component life. If the vehicle has been subjected to extreme cold temperatures for
extended periods of time, engaging the foam system will allow the hydraulic oil to warm up before initiating operation
of the Husky 3 system.
4-10.2 Recommendations
U.S. Oil Multi-Vis 68R, Mobil DTE16M ISO 68 or equivalent.
4-10.3 Oil Change Information
We recommend taking an initial sample of hydraulic oil and having it analyzed to serve as a baseline for future oil
analysis results. Annually, obtain an oil sample and compare to previous results. If the current sample matches
previous test results, the oil does not have to be changed. Replace oil and filter (Pierce PN 2518612) if test results
indicate oil degradation.
The hydraulic fluid used for cold weather application may not function properly at higher temperatures,
and must be changed to an appropriate recommended type for proper operation of unit.
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