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Fig.2 Adjustment of specified
advanced injection angle
align:> with the correc graduat.;d lIlark of specifie adva'lCcd mjection angle all the flywheel rim
(or on the crankshaft
pll11~y).
3.In
CHSC'
that
~hey
do not match with each olher,the advanced injection angle ca'1 be
adjusterl by rem ving off the front cover on the timing gear housing ar'd laos -er.ing the thrce
8lTCW
[a"tening the inierl'Oil pump timing gear support
(st'P
fig.2).If he injection tim-iTlg is too
l'dvan '<',tun the tim:ng gear ::-upport an -ticlockv.isf.' to the pfllper angle.0thenyise.turn the
<;uPPO{t clockwise.If aJjusti!lg Jiwge is not enough
due to limit- tion of
l!le
three Jongated holes,loosen
a little the three fastcning nuts on the triangular
flange of the injection
pUJJ
p and turn the injection
purrp.Facing the fmllt end of engines.when the in-
jpdion pump r'ltates c1ockwise.the fuel injection
will
retarrl;while the pump rvlatcs anticlockwise.the
fuC'l iujection will advance.
4.}\ dditionally,if the ellgine 1m3 injection angle
aJvance
devjce,th~
aJvancpct injeclirm angle can be
.tdjl ;,;ted by loosening the
tl
rf"e
lJU,S
on the
triangu'lar flange of mjpction pump and turn the
inje~tion
pumlJ
8haft.Fclcin~
Lhf" front
end
of
engines,when the injection pump rot?tes clockwise.
the fuel injection
will
retard;while the pump rotates anticlockwise.the fuel injection will advance.
After turn the injection p,lmp once,it i' must to tighten the three nuts and check the advance
injection angle aganin untill the advance injection angle fits the spcified value.
ill. Adjustment
0
Inj ,ctor
Injector lest and
adjustm~lJt
must be performe9 on a injector test in order to adjust injpcting
pr,~:-:mre,in
peet spray patt(;fr1 and remedy faults.
Tuo. high
liT
too lower' injector injecting pressure.and
abnor~al
spray. on damaged injector
parts will
caUSt'
engine troubles.such as black smoking, power and speed dropping.increasing ex-
haust temperature and diesel knocking.etc.f;enerally,tl,c "shut of
I"
meth ad is recommended to
check.
d
fauly inijectaT.i.e.lr.o<;en tht" nuts of injection pipe from the injector of every cyJ inder
4-2
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