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

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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. 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.7 This test method is arranged as follows: SectionScope1 Referenced Documents2Terminology3 Summary of Test Method4Significance and Use5Apparatus6Test Transmission6.2Transmission Mounts6.3 Oil Circulating System6.4Oil Return Hole6.5Air Pressure Controls6.6Drive System6.7Instrumentation6.8 Thermocouple Placement6.9Reagents and Materials7Safety8Preparation of Apparatus9Cleaning of Parts9.1Assembly9.2 Calibration10Transmission and Test Stand Calibration10.1Reference Oils10.2 Reference Oil Test Frequency10.3Instrumentation Calibration10.4Shift Time Calibration10.5 Operating Procedure11System Flush and Charge11.1Test Operation11.2Shut Down Procedure11.3Transmission Disassembly 11.4Determination of Test Results12Failure Criteria12.1Shifter Fork Wear12.2Test Validity Determination12.3Report13 Precision and Bias14Keywords15 Test Validity Calculations and LimitsAnnex A1Test Kit PartsAnnex A2Report FormsAnnexA3Data DictionaryAnnex A4Manual Transmission Cyclic Durability Test Parts Inspection and Wear MeasurementsAnnex A5

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09-Jun-2001
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ASTM D5579-00 - Standard Test Method for Evaluating the Thermal Stability of Manual Transmission Lubricants in a Cyclic Durability Test
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5579 – 00 An American National Standard
Standard Test Method for
Evaluating the Thermal Stability of Manual Transmission
1
Lubricants in a Cyclic Durability Test
This standard is issued under the fixed designation D 5579; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
Oil Circulating System 6.4
Oil Return Hole 6.5
1.1 This test method covers the thermal stability of fluids for
Air Pressure Controls 6.6
use in heavy duty manual transmissions when operated at high
Drive System 6.7
Instrumentation 6.8
temperatures.
Thermocouple Placement 6.9
1.2 The lubricant performance is measured by the number
Reagents and Materials 7
of shifting cycles that can be performed without failure of Safety 8
Preparation of Apparatus 9
synchronization when the transmission is operated while con-
Cleaning of Parts 9.1
tinuously cycling between high and low range.
Assembly 9.2
1.3 Correlation of test results with truck transmission ser- Calibration 10
Transmission and Test Stand Calibration 10.1
vice has not been established. However, the procedure has been
Reference Oils 10.2
shown to appropriately separate two transmission lubricants,
Reference Oil Test Frequency 10.3
which have shown satisfactory and unsatisfactory field perfor-
Instrumentation Calibration 10.4
Shift Time Calibration 10.5
mance in the trucks of one manufacturer.
Operating Procedure 11
1.4 Changes in this test method may be necessary due to
System Flush and Charge 11.1
refinements in the procedure, obsolescence of parts, or re- Test Operation 11.2
Shut Down Procedure 11.3
agents, and so forth. These changes will be incorporated by
Transmission Disassembly 11.4
Information Letters issued by the ASTM Test Monitoring
Determination of Test Results 12
2
Center (TMC). The test method will be revised to show the Failure Criteria 12.1
Shifter Fork Wear 12.2
content of all the letters, as issued.
Test Validity Determination 12.3
1.5 The values stated in inch-pound units are to be regarded
Report 13
Precision and Bias 14
as standard. When materials, products, or equipment are
Keywords 15
available only in inch-pound units, SI units are omitted.
Test Validity Calculations and Limits Annex A1
1.6 This standard does not purport to address all of the
Test Kit Parts Annex A2
safety concerns, if any, associated with its use. It is the Report Forms Annex A3
Data Dictionary Annex A4
responsibility of the user of this standard to establish appro-
Manual Transmission Cyclic Durability Test Parts Annex A5
priate safety and health practices and determine the applica-
Inspection and Wear Measurements
bility of regulatory limitations prior to use.
2. Referenced Documents
1.7 This test method is arranged as follows:
2.1 ASTM Standards:
Section
Scope 1
D 235 Specification for Mineral Spirits (Petroleum Spirits)
Referenced Documents 2
3
(Hydrocarbon Dry Cleaning Solvent)
Terminology 3
2.2 SAE Standard:
Summary of Test Method 4
4
Significance and Use 5
SAE J308 Axle and Manual Transmission Lubricants
Apparatus 6
2.3 Military Standard:
Test Transmission 6.2
5
MIL-L-2105 Lubricating Oil, Gear, Multipurpose
Transmission Mounts 6.3
2.4 Other Standard:
1
This test method is under the jurisdiction of ASTM Committee D02 on
3
Annual Book of ASTM Standards, Vol 06.04.
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
4
Available from Society of Automotive Engineers, 400 Commonwealth Drive,
D02.B0.03 on Gear Lubricants.
Warrendale, PA 15096-0001.
Current edition approved June 10, 2000. Published August 2000. Originally
5
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
published as D 5579-94. Last previous edition D 5579-98.
2
Robbins Avenue, Philadelphia, PA 19111-5094, Attn: NPODS.
ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206-4489.
This edition incorporates revisions in all Information Letters through No. 99-2.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 5579
6
GO-H Mack Trucks Oil,Gear: Multi-Purpose 5.2 This test method may also be utilized in other specifi-
cations and classifications of transmission and gear lubricants
3. Terminology
such as the following:
3.1 Definitions:
5.2.1 (final API designation of PG-1),
3.1.1 wear—the loss of material from two or more surfaces
5.2.2 Military Specification MIL-L-2105,
in rela
...

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