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  • ASTM
    D5579-19e1 Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test
    Edition: 2019
    $94.85
    Unlimited Users per year

Description of ASTM-D5579 2019

ASTM D5579-19e1

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




ASTM D5579

Scope

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.


Keywords

cyclic transmission test; forkwear; manual transmission lubricants; shifting synchronization; shift time; thermal stability; total cycle time;


ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)


DOI: 10.1520/D5579-19E01

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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