BRITISH STANDARD AUTOMOBILE SERIES BS AU 215 2 1987 ISO 7804 1985 Power take offs (PTOs) — Part 2 Specification for dimensions of side openings for commercial road vehicles [ISO title Commercial road[.]
Trang 1ISO 7804:1985
[ISO title: Com m ercial road vehicles— Side opening s for truck
power take-ofs]
U C[ 62 1 4.2+6 9.1 4.4]6 9.1 3-4 4
Trang 2This 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 comes
into fect on
3 J n ary1 8
© BSI0 -2 0
The folowing BSI references
relate to the work on this
stan ard:
Commi e reference AUE/13
Draft for comment8 /80 3 DC
ISBN 0 5 0 1 6 9 3
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/13, upon which
the folowing bodies were represented:
Dep rtment of Transport ( Hig hway s)
Freig ht Transport Association
Institute of Roa Transport Eng ine r ( Incorporated)
Lond on Reg ional Transport
Ministry of Defence
National Bus Comp ny
Roa Haulag e Association Ltd
Society of Motor Man facturer and Tra er Limited
Am endm ents is ued sinc publ cation
Amd No Date of is ue Comments
Trang 3Pag e
Fig ure 1 — Ty pe R reg ular d uty ty pe6bolts M10—Ty pe R1 2
Fig ure 2 — Ty pe R reg ular d uty ty pe6bolts M10—Ty pe R2
Fig ure 3 — Ty pe H ( H1 an H2) heav y d uty ty pe8bolts M1 4
Trang 4© BSI 0 -2 0
This Part of BS AU2 5 has be n prep red u d er the d irection of the Automobie
Stand ards Commit e and is id entical with ISO7 0 :19 5 “Commer cia l r oa d
vehicle — Sid e openings f r tr uck power ta ke-o fs”, publshed b the
International Org anization for Stand rdization ( ISO)
BS AU2 5-1 specifies dimensions for the clearance env elope for PTOs
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 BritishStand rd without
d ev iation Some terminolog y and certain conv entions are not identical with those
used in BritishStand rds; at ention is d rawn especialy to the fol owing
The comma has be n used as a decimal marker In BritishStand ards it is cur ent
practice to use a ful point on the b selne as the decimal marker
W herev er the words “ nternational Stand rd” or “ ISO7 0 ” a pear, refer ing to
this stand ard, they should be read as “ BritishStand ard” and “ BS AU2 5-2”
respectiv ely
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 ,
p g es1 to4 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
Trang 51 Scope and field ofappl cation
This International Stand rd lay s d own the
dimensions of sid e opening s for truck power
take-ofs These specifications are a plca le for al
g eneral instal ations of power take-ofs on the
transmis ion g ear box of trucks an tractor where
the siz of the transmis ion permits
2 Definition
g ear depth
distance f om transmis ion face to pitch l ne of
power take-of driv e g ear
3 Specifications
3.1 Types
This International Stand rd d efines two ty pes of
side opening :
— Ty pe R: reg ular duty ty pe,6 bolts M10
— Ty pe H: heav y duty ty pe, 8 bolts M1
Both ty pes are specified with two alternativ e g ear
depths and subd iv ided ac ording ly
3.2 Ty e R
Ty pe R shal hav e one of the folowing g ear depths:
— Ty pe R1:20±10mm
— Ty pe R2:7 ±10mm
Ty pe R1 shal comply with the req uirements of
Fig ure 1
Ty pe R2 shal comply with the a ditional
requirements of Fig ure 2
3.3 Ty e H
Ty pe H shal hav e one of the fol owing g ear d epths:
— Ty e H1: 14±10mm
— Ty e H2: 6 ±10mm
Ty pes H1 and H2 shal comply with the
requirements of Fig ure 3
4 Desig na tion
Ex mple for the desig nation of a6bolt M10 sid e
opening ( ty pe R) with g ear d epth20±10mm
( cod e1):
PTO o ening ISO7 0 -R1
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N T 1 Ge r data an b cklash are sp cified b g earb x man facturer
N T 2 P O driv g ear ma b located eiher side of the v rtcal centre-ine
Fig ure 1 — Ty e R reg ular duty ty e6bolts M10— Ty e R1
Trang 7NOT For al other dimensions,se Fig ure 1.
Fig ure 2 — Ty e R reg ular duty ty e6 bolts M10— Ty e R2 (wide c ntre o ening )
Trang 8© BSI 0 -2 0
N T 1 Ge r data an b cklash are sp cified b g earb x man facturer
N T 2 P O driv g ear ma b located eiher side of the v rtcal centre-ine
Fig ure 3 — Ty e H (H1 and H2) hea y duty ty e8 bolts M12
Trang 9b
Trang 10ISO 7804:1985
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