Interpretation ID: nht74-5.45

DATE: 08/01/74

FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA

TO: Bayerische Motoren Werke AG

TITLE: FMVSS INTERPRETATION

TEXT: This responds to BMW's June 20, 1974, question whether 7/16-inch vacuum tubing may be manufactured and sold although it does not appear in Table V of Standard No. 106-74, and if so, what Table V values would be used in testing it.

Table V establishes test values for vacuum hose but does not limit the vacuum hose sizes which may be manufactured and sold in conformity with the standard. You are free to utilize 7/16-inch vacuum hose, and the Table V test values for 15/32-inch hose should be used to test 7/16-inch hose.

We are considering the addition of an entry in Table V to cover 7/16-inch hose in the near future.

YOURS TRULY,

Bayerische Motoren Werke KTIENGESELLSCHAFT

AIR MAIL

Docket Section

National Highway Traffic Safety Administration

June 20, 1974

Betreff: Standard 109; Vacuum Brake Hose Tests

With reference to Table V (38 FR 31308) of the subject standard, BMW would like to forward the comments and requests contained below.

Table V lists various values relating to vacuum brake hoses of different inside diameters. We are presently contemplating the use of such a hose whose I.D. is 11.1 mm, or 7/16 of an inch, which is not included in the table.

There is concern here that it may have been omitted if, for some reason, this size is not approved.

If use of the 7/16 inch size is permitted, we would like to have written statement to that effect - since it is not part of the present table - and would further request that, in the interest of completeness, this size be included in future tables.

Accordingly, we await your reply.

ppa. i.v.

(Kraft) (Fellerer)