NFPA-FIRE NFPA-FLUID EEMUA UL CTA AWS
NFPA-FIRE NFPA-FLUID EEMUA UL CTA AWS
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 (10 000 lb) of GVWR. This recommended practice includes the pass/fail criteria of Standard No. 121.
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This SAE Standard provides test procedures for air, air-over-hydraulic disc or drum brakes used on highway commercial vehicles over 4536 kg (10 000 lb) GVWR. This recommended practice includes the pass/fail criteria of Standard No. 121.To provide an FMVSS121-based performance test and a wear and performance at increasing brake temperatures for disc and drum assemblies.
