Downloaded from www.Manualslib.com manuals search engine ADJUSTMENTS
DESCRIPTION
1st choke
2nd choke MAIN ADJUSTMENT
Venturi bores
...................................................................................
d 23
27
Main jets ................. ...........................
... ................. ... ....... ...............
cl5 115 130
Air correction jets ..............................................................
d 225 190
Emulsion tubes
...............................................................
......
N’ F 21
F 25 IDLING SPEED CONTROLS
Petrol jets
.......................................................................................
d
50 50
Air jets .....................................................................................
(3
100 70
Anti-spill hole ............... ..............................................
....... ........
d 100
Leakage rate past the butterfly under a pressure of 450 mm of mercury
kg; h 2
$2 PROGRESSIVENESS
Staggered holes 3
2 ...............................................................................
u By-pass )) jets (
/irst stnrtiug /row the ho ttott/ J
100 ............................ 1 / 100 cb 80
( SC~COII~ slnrlirrg I.0Nf the bottom )
...................... l/ 1OOd 110 100
( third stnrfiug [row the bottov~ )
........................... l/100($
100 ACCELERATION PUMP
Pump control cam N”
14 850 094 14 850 094 ...............................................................................
Injector ( upper non-weighted type ) ............................................
d 45
Volume of pump - total
cm3 120 -t 0.2
.......................................................................
- partial ( /or r(‘/vre)~Co /~IIr/wS(‘S ) ................... ...........
cm3 0.5 0.7
Outlet tube
200 ................................................. ....... ...........
............... ... d COLD START DEVICE
Return spring for the anti-flooding membrane; 550 g” or 850 g*‘i;
Pressure calibrator for membrane control ...........................................
(1, 40
Return
spring for the clutch flap
180 g ...............................................
Ni 47 600 140
Positive opening’of butterfly under operation of coldstart device
.... d 1.25 2 0.05
Cam for cold-start device
N” 45 200 051
..............................................................
Opening of strangler flap (mensllrcd dt the loIc,cr c,dgc’ ur/dcJT 0 /lI’(‘.sSlI)‘C * 3.5 i 0.25
() j 4(j(J tr ,),, (J ,,, (Jr(-[,q Pin (b
““4 -t 0.25
..... ... .....................................................
... ...... IDLING SPEED CUT-OUT
Electrically operated NG 43840013 ............................................................................. GENERAL FUEL SUPPLY
Float needle
d 1.35
..................................................................................
Two plastic floats 13 F 0.5 ...................................
............... .............................
g.
7 t 0.25
Pre-adjustment setting with float and gasket ...............................
....... mm
Calibration of fuel return to tank .................................
......................... mm 0.8 to 0.9
1
*
W 74-00 only
* + W 69-50 and W 74-50 .
Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 173-O : Chrrkivp fhr prmd s,,pp/> Op. MA. 173.0 1
PETROL PUMP
AC DELCO pump reference E/PE 4.777
Auto-regulating diaphragm lift and force pump
operated by eccentric on camshaft.
This pump is fitted with (I device which enables it
to function on re-cycled petrol. This re-cycling is
effected by means of a by-pass .( 1 ) fitted on the
carburettor cover.
Excess petrol supplied by the pump returns to the
tank across an orifice calibrated from 0.8 to 0.9mm
in the by-pass union (1).
PETROL PUMP OUTPUT
(I) Otitput nil, maximum pressure : 325 mbars (4 7 psi).
b) Output through open carburettor float needle
valve.
500 45 88
3000 65 170
5500 69.5 192
I I
Minimum pressure
in mbors
INSTALLATION OF PETROL PUMP
Fitted on the crankcase with :
one (( Phenoploste P12 )) spacer 5 + 0.1 mm thick.
two (< SOCOID a> paper gaskets fitted dry.
Tightening torque for petrol pump nuts :
21 mN ( 2.1 m.kg ).( 15 l/4 ft.lb )
CHECKING THE STROKE OF THE PUMP PUSH-ROD
a) With the pump removed and using (I depth gouge A,
take the measurement between the upper face of
the spacer ( with paper joints ) and the camshaft
eccentric in its high position and in its low
position.
This measurement should be :
- Upper position of eccentric 27.4 ? 0.35 mm
- Lower position of eccentric 32.4 rk 0.35 mm
b) Measure the length u a a) between the spring stop cup
and the tip of the pump control push-rod.
This length should be :
a = 4.5 mm minimum
