Bsi bs au 190 1983 (2000)

BRITISH STANDARD AUTOMOBILE SERIES CONFIRMED APRIL 1991 BS AU 190 1983 Specification for Interface dimensions and fixing bolts for the mounting of overrun devices on delta shaped drawbars of trailers[.]

APRIL19 1

U C6 9.1.0 3.5:6 9.1 -4

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Automo ile

Stan ards Commi e ,was

published u der the authoriy

ofthe Bo rd of BSI an

comesinto fect on

3 Se temb r1 8

© BSI0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

The prep ration of this BritishStand rd was entrusted b the Automobi e

Stand rd s Commit e ( AUE/-) to Tech ical Commit e AUE/ 8 upon which the

fol owing bodies were represented:

Association of Traier Man facturer

Carav an Club

Chief and Assistant Chief Fire Oficer ’ Association

Dep rtment of Industry ( Mechanical Eng ine ring )

Dep rtment of Transport

National Carav an Cou ci Limited

Society of Motor Man facturer and Tra er Limited

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

Fig ure 1 — Positions of mounting holes in d elta sha ed d rawb r 1

This BritishStand ard has be n prep red u der the direction of the Automobie

Stand rd s Commit e It is intended to ensure inter hang ea i ity of ov er u

d ev ices when they are mou ted on delta sha ed drawb r of trai er

A British Stand ard d oes not purport to includ e al the neces ary prov isions of a

contract User of British Stand rd s are responsible for their cor ect a plcation

Com pl anc with a British Standard does not ofitself confer im m unity

f om leg al o l g ations

Sum mary of pag es

This document comprises a f ont cov er, an insid e font cov er, p g esi andi ,

1 Scope

This BritishStand rd specifies req uirements

forinter ace d imensions an fixing bolts for

themounting of ov er u dev ices on delta

sha edd rawb r of trai er up to a g ros mas

of20 0kg

NOT The t les of the publicatons refer ed to in this

stan ardare listed on the inside b ck co er

2 Definitions

For the purposes ofthis BritishStand rd, the

fol owing d efinitions a ply

2.1

delta shaped drawb r

twin drawb r of a trai er whose includ ed ang le,

where they join, is a proximately3 °

2.2

o er un devic

a dev ice that automatical y a pl es the brakes of a

traier when the spe d of the towing v ehicle

d ec eases

3 Mounting dimensions

The siz s and disposition of mou ting holes shal be

as shown in Fig ure 1

NOT Ov ru de ices are pro ided wih slots to acommodate

the two re r fixing b lts,the p si on of which ma v ry wihin

the tolerance on the ang le shown in Fig ure 1

4 Fixing bolts and nuts

Four1/ 2UNI g ra eS bolts an n ts comply ing

with BS17 8, or four1 mm g rad e8.8 bolts and

n ts comply ing with BS3 92, shal be used to

secure the ov er u dev ice to the mounting face of

the d rawb r

The n ts shal be secured b a locking method that

wi prev ent them becoming lo se

Fig ure 1 — Positions of m ounting holes in delta shaped drawb r

b

Publica tions referred to

BS17 8, Unified pr ecision hexa gon bols, s r ews a nd nuts (UNC a nd UNF thr ea d s) Nor ma l s r ie

BS3 92, ISO metr ic pr ecision hexa gon bol s, s r ews a nd n ts

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