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MIL-PRF-6083

SPECIFICATION, GRADE, TYPE, CLASS DESCRIPTION USES Products

This specification covers one grade of petroleum base hydraulic fluid that is rust inhibited and used both as a preservative for hydraulic systems and components as well as being an operational fluid. The hydraulic fluid is identified by Military Symbol OHT and NATO Symbol C-635.  

 

Hydraulic fluid, petroleum base, for preservation and operation

 

 

for hydraulic systems of military ground vehicles and equipment

..

Royco 783

MIL-PRF-6083 SCOPE:
This specification covers one grade of petroleum base hydraulic fluid that is rust inhibited and used both as a preservative for hydraulic systems and components as well as being an operational fluid. The hydraulic fluid is identified by Military Symbol OHT and NATO Symbol C-635.

MIL-PRF-6083 Intended Use:
The hydraulic fluid is intended for use as an operational fluid from -54C to 135C where corrosion protection is required and a determination has been made that MIL-PRF-46170 Type I (FRH) hydraulic fluid cannot be used. This includes use in recoil mechanisms and hydraulic systems for rotating weapons or aiming devices of tactical and support ordnance equipment, except combat armored vehicles/equipment which require FRH. The hydraulic fluid is also used as a preservative fluid for aircraft hydraulic systems and components where MIL-H-5606 (OHA) or MIL-PRF-87257 is used as an operational fluid.

MIL-PRF-6083 Cleaning agents
Isopropyl alcohol

Isopropyl alcohol should not be used as a cleaning agent on components containing any parts which may have come in contact with hydraulic fluid. A sticky acrylic resin is formed which may be detrimental to the proper operation of hydraulic components.
If isopropyl alcohol must be used as part of a cleaning sequence, it is essential that the components be thoroughly dried to remove all traces of the alcohol.

MIL-PRF-6083 Chlorinated solvents
Chlorinated solvents should not be used for cleaning hydraulic components. Residual solvent contaminates the hydraulic fluid and may cause corrosion

MIL-PRF-6083 Damage
Recommended solvents. The recommended solvents are P-D-680, type II, or other petroleum distillate type solvents.

MIL-PRF-6083 Storage condition
Prior to use in the intended equipment, the product may be stored under conditions of covered or uncovered storage in geographic areas ranging in temperatures from -57C to +49C.

MIL-PRF-6083 Fluid handling
Owing to the difficulty of preventing contamination after the opening of a container, it is recommended that the hydraulic fluid be purchased in 16-ounce (oz), 1-qt, and 1 gal containers by all users. If the fluid is dispensed from larger containers, strict procedures must be employed to exclude and remove moisture, solid particles or other contaminants.

MIL-PRF-6083 Interchangeability and compatibility
 MIL-PRF-6083 fluids are not substitutable for (interchangeable with) any other fluids. MIL-PRF-6083 fluids should not be mixed (regarded as compatible) with any other fluids except those conforming to MIL-PRF-87257, MIL-PRF-46170 Type I, and
MIL-H-83282.

MIL-PRF-6083 Disposal actions
Background

The product may contain 0.5 percent tricresyl phosphate, where not more than 0.01 percent may be present as the ortho isomer. If this ortho isomer of tricresyl phosphate is absorbed through the skin or taken internally it may cause paralysis. Accumulated waste liquids should have the exterior of the outer pack marked as containing tricresyl phosphate to assist disposal facilities to manage the product according to regulations promulgated by the US Environmental Protection Agency under Public Law 94580, Resource Conservation and Recovery Act of 1976.

MIL-PRF-6083 Handling and safety precautions
Personnel handling the product should wear appropriate impervious clothing to prevent repeated or prolonged skin contact. Local appraisal is required for exact health and safety implications and compliance with OSHA regulations. Product labeling and Material Safety Data Sheets (MSDS) information should be used by safety and health office of using activity to prescribe precise application of protective measures. If skin or clothing becomes moistened with the product, personnel should promptly wash with soap or mild detergent and water. Respirators are not required unless there is an inhalation exposure to mists.
Personnel should wear protective clothing when using the product and when cleaning up spills.

MIL-PRF-6083 Disposal
Field operations

Depending on the size of spills, paper towels or absorbent should be used to absorb the liquid. Contaminated soil should be removed and placed in a box with absorbent or towels. This box with spill clean-up wastes should either be buried along with ordinary refuse at a rate not to exceed 10 lbs of clean-up waste per spill event or be incinerated in a permitted municipal waste incinerator. Bulk wastes and contaminated liquids should not be landfilled. Partially full containers or contaminated product should be collected centrally for commercial recycling by a commercial reprocessing firm. Recycling by DoD military field activities, including depot-type operations, are not authorized at this time. Liquid products used for heat recovery are regulated by the Environmental Protection Agency under Public Law 94580, Resource Conservation and Recovery Act of 1976. Heat recovery is required to meet the Standard in 40 CFR 266, subpart E, Used Oil, burned energy recovery.

MIL-PRF-6083 Container Disposal
Tops from one-time-use containers should be discarded with ordinary refuse. Containers should be made as empty as possible using gravity draining, after which they should be crushed and buried in an authorized sanitary landfill or incinerated with general refuse. No special decontamination procedures are required for empty containers or their lids.
Recommended maximum blending temperature. At no time during compounding process or any operations subsequent thereto, should the temperature of any of the ingredients of the liquid, or the fluid itself, be greater than 149 C.
Sonic shear test equipment. A 250 W, 10 KC magnetostrictive oscillator model
DF-101 supplied by the Raytheon Corporation, or its equivalent, may be used in the shear stability test. Directions in the manual for respective instruments should be followed.

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