Valmet 309 - Page 92

|ITJEC ON
Pttf
BOSCH
?r
l@
l. Cold
start
bu+toi 2. Boost
plug
6. RQv-governor
7.
SPeed
tl. Lube
oll to Iniecilon
PumP
Pressure
coniro
I lei
lever
8. Lub€
ol
I
12.
ldent
lf
I ca+lon
J. Ov6rllow
valve
4. Stop
lever 5.
Oll
flller
from Injectlon
punp
9. Hand
pump
10. Feed
pump
o
la+e 11.
Pressure
equallzei
The ouislde and ihe construc+lon of
lnJec+lon
Dumo
Bosch
nPr
dllfer from those of
the
rrAtr
+ype
pump.
The funcflon, hor6yor,
ls ihe sam6.
In the
'P'r
iype
pump
every
pump
eleiEn+
rlih
lis
pressure
valve and v€lv9 holder
ls ln a
closed element houslng.
The
baslc adJusiment of +he
feod ra+e ls
made
by +urnlng the elemenl
houslng,
whlle fhe feed
sfari ls EdJusied by chonglng
tho
ihlckness of
ihe shlms sltuated under
the elemeni houslng
tlange. The
closed
type
pump
body has
no slde
hatchgs a
other control holes.
The
feed roie ls adjusted
by ihe control
rod
made of
angle
pro{lle
sleel.
The rod has
notchos on *hlch +hs balls of
+he control
iag
d€s
lean.
The InJectlon
pump
ls
bof+om-mounied.
The
pump
ls rcunied
on a
separale
base on
the englne
lef+ slde. The lnjectlon
pump
ls drlven by
ihe
englne llmlng
gear
vla shofi
and mulilplE
pla+e
clu+ch. The
pump
ls @nnected
to ihe
englne
lubrlcailon sysiem.
Prossure
valvg
holder
2.
pressure
E lsment
4.
Conlrol rod
5.
Control
Va lve
iaooe+
7.
Camshafl
va
lve
I
-6