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ASTM D4998-13(2021)

Historical Reaffirmation

Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids

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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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warning information is given in Sections 7 and 9.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


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.

SDO ASTM: ASTM International
Document Number D4998
Publication Date Oct. 1, 2021
Language en - English
Page Count 6
Revision Level 13(2021)
Supercedes
Committee D02.B0.03
Publish Date Document Id Type View
June 15, 2013 D4998-13 Revision
Dec. 1, 2011 D4998-11 Revision
July 6, 2000 D4998-95 Revision
Oct. 1, 2021 D4998-13R21 Reaffirmation
May 10, 2003 D4998-95R03E01 Reaffirmation