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should pull the control rnck out
to
the posiUon
"
Rc"
[=
8 .8
t
0.1 mm
(0.346
±
0.004 in.)];
j
(
not, tighten
Or
loosen 3daptor screw (4)
.
[NOTE]
The rack movement from "'Ran to "'Re" corre-
s.ponds to
the amount
of compression of ad ap.
tor
spring (5), whioh is
referred
to
"
"adaplor
stroke." Tightening (or drlving iJ1ward) adjusliJ1g
screw (4)
elongates
this
spring to increase the
stroke, and vice versa.
CD
@
®
®
4
Adaptor adjustment
(d)
Low.speed control
.djustrnent
I·Ton3ion levef
2·LLXk
nut
3.sh
IfI1 plele:
4·Adi!~tor
screw
5-Adap~or
$pri
n9
This adjustment is related to
lhe
low·speed
control
curve
in
th~
diagram given above, and
is
effected as
foUows
:
I
.
Run the pump at "Ni"
(~
275
rpm),
with the
adjusting
lever bearing
against the
In
3XirrlLLIlI
-
speed
slopper;
tum
back the
adjusting
lever
until the control rack
comes to
"Rh"
r~
5.5
±
0.1
nun
(0217
±
0.004 in.)]; and secu,e the
adjusting lever
Ihere.
2
.
Instill the idling
spring.
Drive in the adju"ing
Screw
of
this
screw
.
as shown. until the control
rack mo\'e:S
in
and comes to
"R.i."
Be careful
not to
set
this
adjusting screw too
rar
inward
or the no-load maximuJn speed
will
rise too
high
in
operation.
3.
Lower the
speed to
"Ng"
(~
200 rpm), this
should cause [he conlrol rack to move
in
and
comes
to
"R,g"
[.
11.0
mm
(0.433
iJ1.)
miJ1i·
mum)
owing
to the action
of
the idling spring.
MAINTENANCE AND ADJUSTMENT
Setting idling
spring for
low-speed
control
4.
After completing
the
foregoing adjustment"
stop running the pump and tum the
adjusting
lev.r
in the stopping direction
until
the control
rack comes to I mm
(0.0394
in.)
position.
Set
the stop adjusting screw to limit the stopping
end
or adjusting
lever
slroke,
and
secure
the
screw
by tightening
i
T
S
lock
nut
.
(3) Matching the pwnp to the engine
After adju.sting
the
govern or according
((I
the
procedures
sci
fortil in (2) .bove
,
check the
mjection qu""tilY by running the injection pump
as
outlined
in (4) INJECTION
QUANTITY
ADJUSTMENT,
INJECTION PUMP TESTING
AND
ADJUSTMENT.
Use
a 500-<:c
(30.S-<:u in.)
measllring
cylinder
to
receive and collect the:
fuel
delivered
by
lhe
four purnp!Jlg elements, with the
adjusting
lever
set at 47° ± 5°
.
For this tesl, t,ke
two readings
,
one by running the pump at 900 rpm
and
tile
other
at
1200
rpm. If the re.ding, differ
from Ihe valu.s iJ1dicated in the lable of standard
adjustment
data,
adjust
tile
pumping
elemenLs.
Measuring injection quantity
75
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