ASTM D5760-95e1

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An American National Standard
e1
Designation: D 5760 – 95
Standard Specification for
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Performance of Manual Transmission Gear Lubricants
This standard is issued under the fixed designation D 5760; 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.
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e NOTE—Table 1 was corrected editorially in December 1995.
1. Scope 3. Terminology
1.1 This specification lists the test methods and acceptance 3.1 Definitions of Terms Specific to This Standard:
criteria for determining the acceptability of lubricants used in 3.1.1 nonsynchronized transmission, n—a transmission
nonsynchronized heavy duty manual transmission. having no means for synchronizing the speeds of engaging
1.2 The values stated in SI units are to be regarded as the elements. Typical heavy-duty manual transmissions have no
standard. The values given in parentheses are for information such means for gear engagement by the shift lever, but may
only. have such means for pneumatic engagement of auxiliary range
gears.
2. Referenced Documents
3.1.2 oil seal compatibility, n—in lubricants for lubricating
2.1 ASTM Standards: manual transmissions and final drive axles, prevention of
D 130 Test Method for Detection of Copper Corrosion from
chemical or thermal degradation of seal elastomers typically
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Petroleum Products by the Copper Strip Tarnish Test observed as hardening, cracking, or excessive swelling in a
D 892 Test Method for Foaming Characteristics of Lubri-
manner which would result in oil leakage.
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cating Oils 3.1.3 thermal oxidation, n—in lubricants used for lubricat-
D 5182 Test Method for Evaluating the Scuffing (Scoring)
ing manual transmissions and final drive axles,deteriorationof
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Load Capacity of Oils the lubricant under high-temperature conditions which is
D 5579 Test Method for Evaluating theThermal Stability of
observed as viscosity increase of the lubricant, insolubles
Manual Transmission Lubricants In a Cyclic Durability formation in the lubricant, deposit formation on the parts, or
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Test
combination thereof.
D 5662 Test Method for Determining Automotive Gear Oil
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4. Performance Classification
Compatibility with Typical Oil Seal Elastomers
D 5704 Test Method for Evaluation of the Thermal and 4.1 PG-1—The temporary designation PG-1 has been as-
Oxidative Stability of Lubricants Used for Manual Trans- signed to identify the category for manual transmissions, apart
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missions and Final Drive Axles from API Service Category GL-4. (See Appendix X1 for
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2.2 Federal Standards: background information on this category.)
Federal Standard No. 791C, Method 3430.2 Compatibility
6 5. Performance Requirements
Characteristics of Universal Gear Lubricants
Federal Standard No. 791C, Method 3440.1 Storage Solu- 5.1 PG-1 performance requirements for candidate gear lu-
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bricants are provided in Table 1.
bility Characteristics of Universal Gear Lubricants
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2.3 Military Standard:
6. Number of Tests and Retests
MIL-L-2105D Lubricating Oil, Gear, Multipurpose
6.1 Test Method D 5704—In determining whether an oil
meets the required limits the following rules shall apply:
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This specification is under the jurisdiction of ASTM Committee D-2 on
6.1.1 No more than three operationally valid tests are to be
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
conducted for compliance testing.
D02.B on Automotive Lubricants.
6.1.2 L-60 data used for PG-1 approval may not be gener-
Current edition approved Aug. 15, 1995. Published October 1995.
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Annual Book of ASTM Standards, Vol 05.01.
ated prior to Test Monitoring Center (TMC) calibration of the
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Annual Book of ASTM Standards, Vol 05.02.
stand for all PG-1 parameters. Stand bias adjustment factors
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Annual Book of ASTM Standards, Vol 05.03.
5 based on reference oil test results will be applied when
Information available from Commanding Officer,Army Materials and Mechan-
appropriate.
ics Research Center, Attention: AMXMR-TMS, Watertown, MA 02127.
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Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5760–95
TABLE 1 PG-1 Category Tests and Acceptance Criteria
Test Item Minimum Maximum
A
Test Method D 5704 for
Viscosity increase, % . 100 %
Pentane insolubles, % . 3.0 %
Toluene insolubles, % . 2.0 %
Carbon/varnish rating 7.5 .
Sludge rating 9.4 .
B
Test Method D 5662
Polyacrylate 150°C, 240 h
Elongation, change % no limit −60
Hardness change, points −20 +5.
...