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ASTM D4998: Standard Test Method for Evaluating Wear Characteristics of Tractor Hydraulic Fluids

Publication Date: Dec 1, 2011
SDO: ASTM: ASTM International
 DOD Adopted   ANSI Approved Approved

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.

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

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.

*A Summary of Changes section appears at the end of this standard.

wear and wear life of lubricants
transmission fluid and gear oil
petroleum and petroleum products
lubricants
hydraulic fluid
gear systems
FZG
fluid
anti-wear characteristics

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