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Standard

Manual Transmission Efficiency and Parasitic Loss Measurement

2012-11-09
CURRENT
J1540_201211
Because of the intense focus on fuel economy and fuel emission standards, it has become imperative to optimize vehicle drivetrains. In light of this, component efficiencies have become an important factor in the drivetrain decision-making process. It has therefore become necessary to develop a universal standard to judge transmission efficiency. This SAE Recommended Practice specifies a test procedure which maps torque transmittal efficiency and parasitic losses for manual transmissions. The application of this document is intended for manual transmissions used in light (class 4) through heavy truck applications with both simple and compound ratio structures. This document is separated into two parts. The first compares input and output torque throughout a specified input speed range in order to determine the overall transmission efficiency. This test is used to evaluate all forward gears; testing in reverse is optional.
Standard

Manual Transmission Efficiency and Parasitic Loss Measurement

2000-11-02
HISTORICAL
J1540_200011
Because of the intense focus on fuel economy and fuel emission standards, it has become imperative to optimize vehicle drivetrains. In light of this, component efficiencies have become an important factor in the drivetrain decision-making process. It has therefore become necessary to develop a universal standard to judge transmission efficiency. This SAE Recommended Practice specifies a test procedure which maps torque transmittal efficiency and parasitic losses for manual transmissions. The application of this document is intended for manual transmissions used in light (class 4) through heavy truck applications with both simple and compound ratio structures. This document is separated into two parts. The first compares input and output torque throughout a specified input speed range in order to determine the overall transmission efficiency. This test is used to evaluate all forward gears; testing in reverse is optional.
Standard

Manual Transmission Efficiency and Parasitic Loss Measurement

1992-04-01
HISTORICAL
J1540_199204
Because of the intense focus on fuel economy and fuel emission standards, it has become imperative to optimize vehicle drivetrains. In light of this, component efficiencies have become an important factor in the drivetrain decision-making process. It has therefore become necessary to develop a universal standard to judge transmission efficiency. This SAE Recommended Practice specifies a test procedure which maps torque transmittal efficiency and parasitic losses for manual transmissions. The application of this document is intended for manual transmissions used in light (class 4) through heavy truck applications with both simple and compound ratio structures. This document is separated into two parts. The first compares input and output torque throughout a specified input speed range in order to determine the overall transmission efficiency. This test is used to evaluate all forward gears; testing in reverse is optional.
Standard

Pilot Bearings for Truck and Bus Applications

2017-08-14
CURRENT
J1731_201708
This SAE Recommended Practice describes STANDARD-DUTY and EXTREME-DUTY Pilot Bearing requirements and sizes for class 6, 7, and 8 on-highway trucks and buses that use diesel engines and manual transmissions. The recommendations may apply to a wide range of other pilot-bearing applications, such as agricultural, industrial, and construction equipment.
Standard

Pilot Bearings for Truck and Bus Applications

2001-06-12
HISTORICAL
J1731_200106
This SAE Recommended Practice describes STANDARD-DUTY and EXTREME-DUTY Pilot Bearing requirements and sizes for class 6, 7, and 8 on-highway trucks and buses that use diesel engines and manual transmissions. The recommendations may apply to a wide range of other pilot-bearing applications, such as agricultural, industrial, and construction equipment.
Standard

Recommended Remanufacturing Procedures for Manual Transmission Clutch Assemblies

2000-08-28
HISTORICAL
J1915_200008
This SAE Recommended Practice is prepared as a guideline to improve and maintain the quality of remanufactured automotive products. Installation of remanufactured or rebuilt products is often an economical way to repair a vehicle even though they may not fully be equivalent to original equipment parts. Before processing any part, a remanufacturer should determine if the original design and present condition of the core are suitable for remanufacturing, so as to provide durable operation of the part as well as acceptable performance when installed in a vehicle. The remanufacturer should also carefully consider the safety aspects of the product and any recommendations of the original manufacturer related to remanufacturing or rebuilding their product.
Standard

Recommended Remanufacturing Procedures for Manual Transmission Clutch Assemblies

2017-08-22
CURRENT
J1915_201708
This SAE Recommended Practice is prepared as a guideline to improve and maintain the quality of remanufactured automotive products. Installation of remanufactured or rebuilt products is often an economical way to repair a vehicle even though they may not fully be equivalent to original equipment parts. Before processing any part, a remanufacturer should determine if the original design and present condition of the core are suitable for remanufacturing, so as to provide durable operation of the part as well as acceptable performance when installed in a vehicle. The remanufacturer should also carefully consider the safety aspects of the product and any recommendations of the original manufacturer related to remanufacturing or rebuilding their product.
Standard

Recommended Remanufacturing Procedures for Manual Transmission Clutch Assemblies

1990-02-01
HISTORICAL
J1915_199002
This SAE Recommended Practice is prepared as a guideline to improve and maintain the quality of remanufactured automotive products. Installation of remanufactured or rebuilt products is often an economical way to repair a vehicle even though they may not fully be equivalent to original equipment parts. Before processing any part, a remanufacturer should determine if the original design and present condition of the core are suitable for remanufacturing, so as to provide durable operation of the part as well as acceptable performance when installed in a vehicle. The remanufacturer should also carefully consider the safety aspects of the product and any recommendations of the original manufacturer related to remanufacturing or rebuilding their product.
Standard

Pull-Type Clutch Transmission Installation Dimensions

2003-04-24
HISTORICAL
J1463_200304
This SAE Recommended Practice documents the typical transmission interface dimensions that are used with 14-in and larger pull-type clutches. See Figure 1. Purpose Provide dimensional guidelines for current and future designs and thus promote interchangeability between various clutch and transmission combinations. Due to the variety of clutches and transmission mounted clutch housings, no standard clearance envelope can be established without imposing design restrictions. It is recommended that any specific combination be verified for clearance before incorporating in design.
Standard

Pull-Type Clutch Transmission Installation Dimensions

1984-11-01
HISTORICAL
J1463_198411
This SAE Recommended Practice documents the typical transmission interface dimensions that are used with 14-in and larger pull-type clutches. Provide dimensional guidelines for current and future designs and thus promote interchangeability between various clutch and transmission combinations. Due to the variety of clutches and transmissions mounted clutch housings, no standard clearance envelope can be established without imposing design restrictions. It is recommended that any specific combination be verified for clearance before incorporating in the design.
Standard

Pull-Type Clutch Transmission Installation Dimensions

1998-01-01
HISTORICAL
J1463_199801
This SAE Recommended Practice documents the typical transmission interface dimensions that are used with 14-in and larger pull-type clutches. The purpose is to provide dimensional guidelines for current and future designs and thus promote interchangeability between various clutch and transmission combinations.
Standard

Heavy Truck and Bus Retarder Downhill Performance Mapping Procedure

2000-05-01
CURRENT
J1489_200005
The procedure covers the estimation of the total retardation capability available to a specific vehicle from: a Natural retardation (rolling resistance, aerodynamic drag, etc). b Engine drag c Engine, integral automatic transmission, driveline or trailer-axle retarders It assumes that foundation brakes are not used for maintaining speed on long mountain descents. Retardation is rated in terms of the maximum grades on which stable control speeds can be maintained for each gear over the range of highway speeds appropriate to that gear. For each gear, the calculation procedure determines maximum grades for at least four values of control speed ranging from the vehicle velocity corresponding to full load governed engine rpm, to the vehicle velocity corresponding to the engine rpm at minimum (idle) speed. In addition, the calculation procedure provides information on the total retarding power available for each gear.
Standard

Automotive Pull-Type Clutch Terminology

2012-11-09
CURRENT
J1479_201211
This SAE Standard describes the terms or names of the parts, characteristics, and parameters of automotive pull-type clutches used in trucks, and of vehicle apparatus or components related to the pull-type clutch.
Standard

Automotive Pull-Type Clutch Terminology

1991-04-01
HISTORICAL
J1479_199104
This SAE Standard describes the terms or names of the parts, characteristics, and parameters of automotive pull-type clutches used in trucks, and of vehicle apparatus or components related to the pull type clutch. This document defines commonly used truck and bus clutch technical terms which may be found in industry publications. The purpose is to promote commonization of these terms for a clearer understanding of the technical content of industry publications.
Standard

Automotive Pull-Type Clutch Terminology

1999-09-21
HISTORICAL
J1479_199909
This SAE Standard describes the terms or names of the parts, characteristics, and parameters of automotive pull-type clutches used in trucks, and of vehicle apparatus or components related to the pull-type clutch.
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