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AIRCOMPRE

SSOR(V-TYPE)

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REG

ULATIONSONAIRCOM

PRESSORS

AirCom

pressornum

berandcapa

cities:

Twoormoreaircompressorsareto

befittedhavinga

totalcapacity,

togetherwithatoppingupcompressor

wherefitted,capableofchargingthe

airreceiversw

ithin

1hourf

romatmosphe

ricpressure,to

thepressure

sufficien

tforthenumb

erofstartsreq

uireAtleastoneof

theairc

ompressorsis

tobeindepen

dentofthema

in

propulsionunitandthecapacityofth

emainair

compressorsistobeapproximatelyequallydivided

betweenthem.

Theca

pacityofanem

ergency

compressorwhichmaybeinstalledt

osatisfythe

requirem

entsoffirststartistobeign

ored.

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REG

ULATIONSONAIRCOM

PRESSORS

Maxim

umd

ischar

geairtemp

erature

Theco

mpressorsa

retobesod

esignedtha

tthe

temperatureofthe

airdischargedtothestarting

airreceiverswill

no

tsubstantiallyexceed93

'Cin

service

.Asmallfus

ibleplugoranalarmdevice

operatingat121&C

istobepro

videdoneac

h

compressortogive

warningofexcessiveair

temperature.

Thee

mergencyaircompresso

ris

except

edfromthes

erequireme

nts.

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REG

ULATIONSONAIRCOM

PRESSORS

Safety

Valves:

Eachc

ompressoristobefitted

withasafety

valves

oproportion

edandadjustedthatthe

accum

ulationwiththeoutletvalveclosedwill

not

exceed

10percentofthemaximumworking

pressu

re.

Thecasingsoftheco

olingwater

spaces

aretobefittedwithasa

fetyvalveor

burstin

gdiscsotha

tamplerelie

fwill

beprovided

intheeventoftheburstingofanaircoolertube.

Itisrecommended

thatcompressorsbecoo

led

byfres

hwater.

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REG

ULATIONSONAIRCOM

PRESSORS

AirRe

ceivercapa

city:

Where

themainen

gineisarran

gedforair

startingthetotalairreceivercapacityistobe

sufficie

nttoprovide

withoutreplenishment,not

lessthan12consecutivestarts

ofthemain

engine

,alternating

betweenaheadandaste

rnif

ofthereversibletypeandnotle

ssthansix

consec

utivestartsifofthenon-reversibletype.

Atleas

ttwoairreceiversofapp

roximatelye

qual

capacityaretobeprovided.

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NEEDLEPINBEAR

ING

MATE

RIAL:

ADVANTAGES:

COVERSLARGERSURF

ACE

COMPAREDTOROLLER

BEARING.

MORE

ECONOMICALWHEN

COMPAREDTOWHITEM

ETAL

BEARING.

EXTEN

DEDPINTOASSISTIN

LUBRICATION.

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NEEDLEPIN

BEARINGWASHERS

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VIEW

INCRANKCASETHROUGHINS

PECTIONDOOR

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PICTURESHOWSTHE

PINW

HERETHEL

.P

AND

H.P

PISTON

BEAR

INGSSEATS

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AVIEW

OF

L.P

ANDH.P

PISTON

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L.P

PISTON MA

TERIAL:ALUM

INIUM

ALLO

Y

L.P

PISTONISCAPAB

LEOF

PRO

DUCINGAROUND4.5

bar.

USUALLYTHEL.P

PISTON

WIL

LBELARGERIND

IAMETER

THA

NH.P

PISTON

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L.PSIDESUC

TION/DELIVERYV/V

MATE

RIAL:STAINLESS

STEEL

SUCTION

/DISCHARGEVALVECONS

TRUCTION

ISSAMEEXCEPTTHEWAYITISPO

SITIONED

.

ARRANGEMENTISSUCHTHATVAL

VEPLATE

SEATSONTHEVALVESEAT

,V/VSPRINGS

SEATON

THEV/VPLATEANDOVER

THATIS

THEV/VP

LATECOVER

,THISWHOL

E

ARRANGEMENTBEINGTIGHTENED

BYNUT

ANDBOLTANDLOCKEDWITHSPLITPIN

.

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L.P

SIDEC

YLINDERC

OVER

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H.P

PISTON

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H.P

SIDESUC

TION/DELIVERYV/V

MATE

RIAL:STAINLESS

STEEL

SUCTION

/DISCHARGEVALVECONS

TRUCTION

ISSAMEEXCEPTTHEWAYITISPO

SITIONED

.

ARRANGEMENTISSUCHTHATVAL

VEPLATE

SEATSONTHEVALVESEAT

,V/VSPRINGS

SEATON

THEV/VPLATEANDOVER

THATIS

THEV/VP

LATECOVER

,THISWHOL

E

ARRANGEMENTBEINGTIGHTENED

BYNUT

ANDBOLTANDLOCKEDWITHSPLITPIN

.

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CONNE

CTINGPIPEB/TFIRST

ANDSECO

ND

STAGE

MATE

RIAL:COPPE

R

EXTEN

DEDFINSTOASSISTIN

COOLINGBYAIR

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BEAR

INGPULLE

R

BEARINGPULLERISA

VERY

ESSENTIALTOOL

USED

TOREMOVETH

E

BEARINGS.

HERE

THISISUSEDT

O

REMO

VETHEDRIVEWHEEL

FROM

THESHAFT.

DRIVE

WHEELBEINGBELT

DRIVE

N.

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TOOLSREQIIRE

D

SPANN

ERSOFAPPR

OPRIATESIZ

ES.

ALLEN

KEYS.

BEARIN

GPULLER.

GREAS

ETOLUBRIC

ATETHENUT

SANDBOLTS.

LAPPIN

GPASTEANDTOOLIFINCASEVALVE

SEAT

ISTOB

ELAPPED.

MEASU

REMENTTOO

LSTOMEAS

UREVARIOUS

CLEARANCES.