ASTM D4998-13 PDF

Scope: 5.1 Many modern tractor designs use the hydraulic fluid to lubricate the transmission and final drive gears. This test method is used to assess the suitability of the tractor hydraulic fluids as lubricants for transmission and final drive gears of tractors.

1.1 This test method is used to screen lubricants for gear wear. It is primarily applicable to tractor hydraulic fluids but may be suitable for other applications.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning information is given in Sections 7 and 9.

ASTM D4998-13 Referenced Document

ASTM D235 Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
ASTM D323 Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method)
ASTM D329 Standard Specification for Acetone
ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants

2021 ASTM D4998-13(2021) Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids
2013 ASTM D4998-13 Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids
2011 ASTM D4998-11 Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids
1995 ASTM D4998-95(2003)e1 Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids
2000 ASTM D4998-95 Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids