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Chassis Ferrous metals Quality, Reliability, and Durability Truck and Bus Foundation Brake Committee Regulations

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Standard

AUTOMATIC SLACK ADJUSTER TEST PROCEDURE
1987-05-01
HISTORICAL
J1462_198705
This recommended practice is intended for testing of automatic slack adjusters as they are used in service, emergency, or parking brake systems for vehicles that can be licensed for on-road use.
Standard

AUTOMATIC SLACK ADJUSTER TEST PROCEDURE
1985-06-01
HISTORICAL
J1462_198506
This recommended practice is intended for testing of automatic slack adjusters as they are used in service, emergency, or parking brake systems for vehicles that can be licensed for on-road use.
Standard

Air Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer
2020-08-20
CURRENT
J2115_202008
This SAE Standard provides test procedures for air and air-over-hydraulic disc or drum brakes used for on-highway commercial vehicles over 4536 kg (10000 pounds) GVWR. This recommended practice includes the pass/fail criteria of Federal Motor Vehicle Safety Standard No. TP-121D-01.
Standard

BRAKE BLOCK CHAMFER
1990-11-01
HISTORICAL
J662_199011
The scope of this SAE Standard is to provide a uniform chamfer on brake blocks.
Standard

BRAKE BLOCK CHAMFER
1997-04-01
HISTORICAL
J662_199704
The scope of this SAE Standard is to provide a uniform chamfer on brake blocks.
Standard

Brake Block Chamfer
2003-04-16
HISTORICAL
J662_200304
The scope of this SAE Standard is to provide a uniform chamfer on brake blocks.
Standard

Brake Block Effectiveness Rating
2014-10-27
HISTORICAL
J1802_201410
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2019-06-06
CURRENT
J1802_201906
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2001-08-07
HISTORICAL
J1802_200108
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Block Effectiveness Rating
2008-12-17
HISTORICAL
J1802_200812
This SAE Recommended Practice provides the test procedure and methods to calculate the effectiveness of brake blocks, using an inertia dynamometer. To minimize testing variability, and to optimize standardization and correlation, a single, high volume size of brake block is specified (FMSI No. 4515E) and evaluated in a reference S-cam brake assembly of 419 mm x 178 mm (16.5 in x 7.0 in) size, using a specified brake drum.
Standard

Brake Drum Qualification Recommended Practice
2012-03-15
HISTORICAL
J2686_201203
This SAE Recommended Practice is intended for qualification testing for brake drums used on highway commercial vehicles with air brakes using an inertia-dynamometer procedure. This Recommended Practice consists of two distinct tests: Part A - durability and speed maintenance test, and Part B - heat check drag sequence test. Each test can be considered to be an independent evaluation of the brake drum which tests different properties.
Standard

Brake Drum Qualification Recommended Practice
2022-12-20
CURRENT
J2686_202212
This SAE Recommended Practice is intended for qualification testing for brake drums used on highway commercial vehicles with air brakes using an inertia-dynamometer procedure. This document consists of two distinct tests: Part A, durability and speed maintenance test, and Part B, heat check drag sequence test. Each test can be considered to be an independent evaluation of the brake drum which tests different properties.
Standard

Brake Drum Qualification Recommended Practice
2017-10-30
HISTORICAL
J2686_201710
This SAE Recommended Practice is intended for qualification testing for brake drums used on highway commercial vehicles with air brakes using an inertia-dynamometer procedure. This Recommended Practice consists of two distinct tests: Part A - durability and speed maintenance test, and Part B - heat check drag sequence test. Each test can be considered to be an independent evaluation of the brake drum which tests different properties.
Standard

Brake Dynamometer Squeal Noise Test Procedure for Commercial Vehicles with Air Brakes
2023-06-02
CURRENT
J3165_202210
This SAE Recommended Practice applies to commercial vehicles above 4540 kg of gross vehicle weight rating equipped with air brakes used under normal operating conditions. The procedure incorporates high and low-temperature test matrices, but does not fully account for the effects of the environment on brake squeal. Much research is currently underway in this area. This document defines brake squeal as a peak noise level of at least 80 dB(A) between 500 Hz and 17 kHz for air disc and drum brakes on on-road vehicles.
Standard

Brake Effectiveness Marking For Brake Blocks
2000-05-02
HISTORICAL
J1801_200005
This SAE Recommended Practice provides the method to assign numerical values of brake effectiveness, using data from single station inertia dynamometer effectiveness tests, and to identify a uniform procedure to mark these values on the edge of brake blocks in excess of 12.7 mm (0.51 in) in thickness.
Standard

Brake Effectiveness Marking for Brake Blocks—Truck and Bus
2007-11-06
HISTORICAL
J1801_200711
This SAE Recommended Practice provides the method to assign numerical values of brake effectiveness, using data from single station inertia dynamometer effectiveness tests, and to identify a uniform procedure to mark these values on the edge of brake blocks in excess of 12.7 mm (0.51 in) in thickness.
Standard

Brake Power Rating Test Code—Commercial Vehicle Inertia Dynamometer
2000-04-20
HISTORICAL
J971_200004
The code provides test procedures and methods of calculating a brake rating from the data obtained for brakes used in highway commercial vehicles over 4.5 T (10 000 lbs) GVWR air and hydraulic. Some general correlation may be expected between brake ratings established by this means and those obtained from vehicle tests such as outlined in SAE J880. The brake rating power, kW (hp) calculated by conduct of this code is an arbitrary index of performance of the brake and drum when tested by this procedure and may be appreciably different from the values obtained by other techniques.
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