ASTM D5579-12a

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

ASTM International , 12/01/2012

Publisher: ASTM

File Format: PDF

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Description

Standard By:ASTM International , 12/01/2012

Published:12/01/2012

Pages:16

File Size:1 file , 280 KB

Language:English

Note:This product is unavailable in Russia, Ukraine, Belarus

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.

ASTM D5579-12a

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

ASTM D5579-12a History

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