Interpretation ID: nht91-6.7

DATE: September 23, 1991

FROM: Gene Byrd -- Manager, Auto/Truck Div., Legris, Incorporated

TO: Vernon Bloom -- Office of Vehicle Safety Standards, NHTSA

TITLE: Re MOTOR VEHICLE SAFETY STANDARD NO. 106 (D.O.T. FMVSS 571-106 REV. 2/1/85); REFERENCE: SECTION S7.3.8 AIR PRESSURE & SECTION S8.7 AIR PRESSURE TEST

ATTACHMT: Attached to letter 12-5-91 from Paul Jackson Rice to Gene Byrd (A38; Std. 106)

TEXT:

WE REQUEST YOU ASSISTANCE IN CLARIFICATION OF THIS SECTION OF THE SPECIFICATION.

SECTION 7.3.8 READS AS FOLLOWS:

AN AIR BRAKE HOSE ASSEMBLY SHALL CONTAIN AIR PRESSURE OF 200 PSI FOR 5 MINUTES WITHOUT LOSS OF MORE THAN 5 PSI.

OUR QUESTION; IS THERE IS A TABLE THAT DEFINES WHAT THE PROPER LENGTH OF THE AIR BRAKE HOSE ASSEMBLY SHOULD BE FOR TEST PURPOSES?

MR. BLOOM, IF WE HAVE SENT THIS INQUIRY TO THE WRONG DEPARTMENT, WE REQUEST THAT YOU PLEASE FORWARD TO THE CORRECT PERSON.

SHOULD YOU HAVE ANY QUESTIONS OR COMMENTS PLEASE GIVE US A CALL.

WE THANK YOU FOR YOUR COOPERATION WITH THIS INQUIRY.