[Code of Federal Regulations]

[Title 49, Volume 5]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR393.53]



[Page 405]

 

                        TITLE 49--TRANSPORTATION

 

                      DEPARTMENT OF TRANSPORTATION

 

PART 393_PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of 

Contents

 

                            Subpart C_Brakes

 

Sec. 393.53  Automatic brake adjusters and brake adjustment indicators.



    (a) Automatic brake adjusters (hydraulic brake systems). Each 

commercial motor vehicle manufactured on or after October 20, 1993, and 

equipped with a hydraulic brake system, shall meet the automatic brake 

adjustment system requirements of Federal Motor Vehicle Safety Standard 

No. 105 (49 CFR 571.105, S5.1) applicable to the vehicle at the time it 

was manufactured.

    (b) Automatic brake adjusters (air brake systems). Each commercial 

motor vehicle manufactured on or after October 20, 1994, and equipped 

with an air brake system shall meet the automatic brake adjustment 

system requirements of Federal Motor Vehicle Safety Standard No. 121 (49 

CFR 571.121, S5.1.8) applicable to the vehicle at the time it was 

manufactured.

    (c) Brake adjustment indicator (air brake systems). On each 

commercial motor vehicle manufactured on or after October 20, 1994, and 

equipped with an air brake system which contains an external automatic 

adjustment mechanism and an exposed pushrod, the condition of service 

brake under-adjustment shall be displayed by a brake adjustment 

indicator conforming to the requirements of Federal Motor Vehicle Safety 

Standard No. 121 (49 CFR 571.121, S5.1.8) applicable to the vehicle at 

the time it was manufactured.



[60 FR 46245, Sept. 6, 1995]