Valmet 309 - Page 102

Notel The
pressure
r lses
qu
lck ly
-
be
careful no+ io damage
ihe
gaugel
Be ready +o
pull
the
stop lever as
soon
as ihe
gauge
shors
2.
the requlred pressure.
4.
Le+ +he
gauge
readlng
flrsi tall
by
about f0
bar. }lhen
lhe
gauge
readlng ls dol{n to 300 bar
keop an
eye on the readlng for one mlnuie.
Durlng
+hls tlme the
roadlng
may no+ fall
conslderably
(f0...50
bar). lf
'the
pressure
falls taster
ihan the ratlng, the
pressure
valve
must be
cleaned or replaced.
Not€l Always
replace
+he pressure valve
stem
and gulde
togeiher.
5. Crank
the englne
wlth storter unill the
gauge
Indlca+es aboui fJo bar
pressure.
Open ihe lock and clamp
ol
the
pressure
valve
holder. Renove ihe valve
sprlng,
the s+em and
fhe
gu
ld€.
Rlnse +he
pressure
valve s+em and
gulde Hl+h
pure
fuel or tes+ tluld
at
the same tlme +urn-
Ing fhe slem ln the
gulde
and
presslng
fhe
gaskei
surfaces agalnsi each
oi-her.
Open +h6 safe+y nu+
(10
mm)
of ihe ldllng
speed
6dJusilng
scre{ and
+he sa{ety
nuf
(17
nm)
of
+he
adjustlng
screw of ihe
addltlonal
sprlng
tor ldllng.
Ensure that
the +hrotile
laveräge
ls ln ldllng
Dos
l+ lon.
Start ihe eng
I ne
of
+he
addi+lonal
affect
ihe ldling
and open
iha
adjustlng screr
sprlng so
ihal li does not
sPe€d.
Adjust
+he ldllng
speed
by
ihe adjusflng
screw
a't
abou+
20
rpm beloi tho
ra+lng.
Race lhe
englne
lor a fer ilmes and ensure thai
the
ldllng speed
remalns as
set.
Tlghten +he adjustlng screw ot the addlilonal
sprlng unil I
ihe
ldllng speed
rlses
'to
ihe
ra-ted value.
Lock
+he adjus+lng screr In
+hls
posltlon.
7. Flx the
safeiy
nuts of +he adjustlng screws.
Note
l Other
adj ustmgn+s
(outp
ut and
max
speed) vll+h +he InJectlon
pump
con
be
perforned
only by a speclally fralned
person
Nlho has
the
necessary speclal
+ools and
gauges
avallable.
7.
Ins+all
fhe pressure
valve
In
'the
Injec+lon
purnp,
moun+ +he valve
sprlng
and close
+he
ho
I der.
llotel Rep
laco
seallng|-lng and O-rlng.
L
Tlghton the
holder as follors:
-
flrst +lghtenlng +o
50 Nm
-
open
ihe holder by
about
l/2
turn
rei lghien 40 Nm
-
open the
holder
by about l/2 lurn
f lgh+en to 45
Nm
and
and I Inal ly
Check
ihai the
cleaned
pressure
valve ls tlghi
enough by cörrylng out +he
measurement
procodure
descrlbed above,
lf
ihe
gaugo
readlng s+lll dlffers from
fhe
railng,
replace
ihe
Dressure
va lve.
10.
Check
each
pressure
valve
In
iurn
as lnsiruc+ed
above.
F.
ADJUSTING
THE
IDLIIG
SPE€O
lf ihe
englno
ldllng
speed differs from +ho
rat
I ng,
adjusf
as
follo*s:
9-16