Bsi bs au 203a 1988 (1999) iso 7653 1985

BRITISH STANDARD AUTOMOBILE SERIES BS AU 203a 1988 ISO 7653 1985 Specification for Dimensions of couplings between power take offs (PTOs) and ancillary driven units on commercial road vehicles [ISO ti[.]

ISO 7653:1985

[ISO title: Road vehicles — Com m ercial vehicles — Coupl ng s

betwe n power take-ofs (PTO) and anci lary driven units]

U C 6 9.1 3 — 4 0 3.5:6 1.8 4

This Bri sh Stan 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 comes

into fect on

2 Fe ruary1 8

© BSI 1 -1 9

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/13

Draft for comment8 / 78 8 DC

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

Stand rds Commit e ( AUE/-) to Tech ical Commit e AUE/13 upon which the

fol owing bodies were represented:

Dep rtment of Transport ( Hig hway s)

Freig ht Transport Association Ltd

Institute of Roa Transport Eng ine r ( Incorporated)

Lond on Reg ional Transport

National Bus Comp ny

National Freig ht Corporation ( NFC) Ltd

Roa Haulag e Association Ltd

Society of Motor Man facturer and Tra er Ltd

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

Fig ure 1 — Ty pe A indirect couplng — PTO side 2

National foreword

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

Stand ards Commit e and is id entical with ISO7 5 :19 5 ( as cor ected an

reprinted in Apri 19 6) “R oa d vehicle — Commer cia l vehicle — Couplngs

betwe n power ta ke-o fs (PTO) a nd a ncila r y d r iven u is”, publ shed b the

International Org anization for Stand rdization ( ISO) This edition of the

stand rd super ed es BS AU20 :19 5, which is withdrawn

Term inolog y and conventions The text of the International Stand rd has

be n a prov ed as suita le for publcation as a British Stand rd without

d ev iation Some terminolog y and certain conv entions are not identical with those

used in British Stand rds; at ention is d rawn especial y to the fol owing

The comma has be n used as a decimal marker In British Stand rd s it is cur ent

practice to use a ful point on the b selne as the decimal marker

W herev er the words “ International Stand rd” a pear,refer ing to this stand rd ,

they should be read as “ British Stand rd”

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

Cros - referenc s

Inte national Stand rd Cor esp nding British Stand rd

BS AU2 4 Gea r box fla nge

ISO 7 4 :19 6

a

Part 2:19 8 Spe ifica tion fr d imensions f r type A

gea r box fla nge fr commer cia l vehicle a nd bus s

( Identical

ISO 7 4 :19 6

a

Part 3:19 8 Spe ifica tion fr d imensions f r type S

gea r box fla nge fr commer cia l vehicle a nd bus s

( Identical

a

Since ISO7 4 an ISO7 4 are now published, fo tnote 1) to clause2 is no long er a plica le

Sum mary of pag es

This document comprises a f ont cov er, an insid e font cov er, p g es i an i ,

p g es1 to 4, an insid e b ck cov er an a b ck cov er

This stand rd has be n up ated ( se copy rig ht d ate) an ma hav e ha

amendments incorporated This wi l be indicated in the amendment ta le on the

inside f ont cov er

1 Scope and field ofappl cation

This International Stand rd lay s d own the

d imensions of coupl ng s betwe n power take-ofs

( PTO) an anci lary d riv en u its mou ted on

commer ial v ehicles, such as hy draulc pumps, etc

This International Stand ard a ples to anci ary

equipment of commer ial v ehicles that req uire a

hy draulc or mechanical power sy stem and that take

power of the main d riv e lne ofthe v ehicle

2 Ref r nces

ISO 7 4 , R oa d vehicle — Gea r box fla nge fr

commer cia l vehicle a nd bus s — Type A

1)

ISO 7 4 , R oa d vehicle — Gea r box fla nge fr

commer cia l vehicle a nd bus s — Type S

1)

3 Specifications

3.1 Types of coupl ng s

This International Stand rd d efines two ty pes of

couplng s:

— Ty pe A: Ind irect couplng

— Ty pe D: Direct couplng

Ty pe A is desig ned for flang e couplng ( i direct

coupl ng ) but it ma also be used for direct couplng

if optional features as shown inFig ure 1 are

prov ided

3.2 Interchang ea i ity

Indirect coupl ng s shal comply with the

requirements ofFig ure 1

2)

Direct coupl ng s shal comply with the

req uirements ofFig ure 2

Detai s not specified are left to the man facturer’s

choice

3.3 Flang es

Flang es for ty pe A spl ned shafts shal comply with

ISO7 4 or ISO7 4

4 Desig na tion

Ex mple for the d esig nation of a P O with ty pe D

con ection:

PTO Coupl ng ISO 7 5 – D

1)

At present at the stag e of draft

2)

If the flang e is sup lied b the P O man facturer the shaft ne d not b in ac ordance wihFig ure 1 Howe er in this case the

dimensions of the flang e shal conform to ISO7 4 or ISO7 4

A

Tole anc s of splnes

Hub

PTO sid e

Hub

Fig ure 2 — Ty e D dire t coupl ng

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b

B

ISO 7653:1985

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