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Full Description

1.1''This test method covers the thermal stability of fluids for use in heavy duty manual transmissions when operated at high temperatures.

1.2''The lubricant performance is measured by the number of shifting cycles that can be performed without failure of synchronization when the transmission is operated while continuously cycling between high and low range.

1.3''Correlation of test results with truck transmission service has not been established. However, the procedure has been shown to appropriately separate two transmission lubricants, which have shown satisfactory and unsatisfactory field performance in the trucks of one manufacturer.

1.4''Changes in this test method may be necessary due to refinements in the procedure, obsolescence of parts, or reagents, and so forth. These changes will be incorporated by Information Letters issued by the ASTM Test Monitoring Center (TMC). The test method will be revised to show the content of all the letters, as issued.

1.5''The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.5.1''Exception'''When materials, products, or equipment are available only in inch-pound units, SI units are omitted.

1.6''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.

1.7''This test method is arranged as follows:

''

Section

Scope

'''1

Referenced Documents

'''2

Terminology

'''3

Summary of Test Method

'''4

Significance and Use

'''5

Apparatus

'''6

'''Test Transmission

'''6.2

'''Transmission Mounts

'''6.3

'''Oil-Circulating System

'''6.4

'''Oil Return Hole

'''6.5

'''Air Pressure Controls

'''6.6

'''Drive System

'''6.7

'''Instrumentation

'''6.8

'''Thermocouple Placement

'''6.9

Reagents and Materials

'''7

Safety

'''8

Preparation of Apparatus

'''9

'''Cleaning of Parts

'''9.1

'''Assembly

'''9.2

Calibration

'''10

'''Transmission and Test Stand Calibration

'''10.1

'''Reference Oils

'''10.2

'''Reference Oil Test Frequency

'''10.3

'''Instrumentation Calibration

'''10.4

'''Shift Time Calibration

'''10.5

Operating Procedure

'''11

'''System Flush and Charge

'''11.1

'''Test Operation

'''11.2

'''Shut-Down Procedure

'''11.3

'''Transmission Disassembly

'''11.4

Determination of Test Results

'''12

'''Failure Criteria

'''12.1

'''Shifter Fork Wear

'''12.2

'''Test Validity Determination

'''12.3

Report

'''13

Precision and Bias

'''14

Keywords

'''15

Test Validity Calculations and Limits

Annex A5

HTCT Test Report Forms and Data Dictionary

Annex A6

Manual Transmission Cyclic Durability Test Parts Inspection and Wear Measurements

Annex A7

1.8''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.

 

Document History

  1. ASTM D5579-19e1

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    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Most Recent
  2. ASTM D5579-19


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  3. ASTM D5579-16


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  4. ASTM D5579-15


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  5. ASTM D5579-14


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  6. ASTM D5579-13


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  7. ASTM D5579-12a


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  8. ASTM D5579-12


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  9. ASTM D5579-10a


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  10. ASTM D5579-10


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  11. ASTM D5579-09a


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  12. ASTM D5579-09


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  13. ASTM D5579-06


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  14. ASTM D5579-05


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  15. ASTM D5579-04


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  16. ASTM D5579-03


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  17. ASTM D5579-01


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version
  18. ASTM D5579-00


    Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test

    • Historical Version