Valmet 411 - Page 104

9 37
8.
o'
Place
gulde
bushlngs beireen
the lnJectlon
punp
bottom
and
lhe mounllng bose. Loror
the
punp
on
l'he npunilng base and flx the coupllng
plece
and the pump
reialnlng screws.
Attach the lnjectlon
pump
dellvery
önd refurn
ol I
plpes,
ihe fu6l
plpe
and
ths boost
pressure
regulaio|'pipe.
CHECKI ilG AND ADJUSTING ITC INJECTIoiI
TII,III{G
Clean
ihe
Injecilon
punp
and lts surroundlngs
caretully. Bleed
ihe fuel
sysiem.
Turn
ihe crankshafl to
a
posltlon
*here thg
lst
cyllnder
plsion
ls ai lts compresslon s+roke
top dead cenire. Nor
lurn
the crankshat+
opposlie
+o the runnlng dlrecilon
untll
the
InJecilon ilmlng
nark
on
ihe vlbratlon damper
Dasses
the
I
ndlcafor.
Ensur€
that ihe
'rexcess
fual feed butfon'r
on
iho
slde ol ihe boosi
pressuro
rsgulaior
ls nol
swliched on.
Remove
the Injectlon
plpe
of
ihe
ls+ cyllnder.
j.
Blow
the conlc
part
of the
pressure
valvs
ho
lder
free of fuel.
Turn ihe
crankghaft slorly
In runnlng dlrec+lon
un+ll
fuel
surfaco In the
pressure valve
holder
stlrs, bu+ does nof
yel
rlse.
It
the
lnJectlon tlolng mark
ls In llne rlfh
ihe tlp
of ih€ lndlcaior,
ihe Injec+lon tlmlng
Is corrgcl,
It
nof,
perlorrn
ihe adjustnent
as
tollows:
B.
939
Check fhe
lnJectlon
tlmlng
and +urn
+hs
coupllng
plece
agaln,
lf nec€ssary.
}lhen lh€ tlnlng
ls
correct
tlghten the
coupllng
plece
flxlng
screws
and llt
ihe lnjecfton plpe
ot the
lst
cyllnder.
I
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