fuel tank Citroen CX 1974 1.G Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 4 OPERATION N” MA. 000 : General characteristics
Weights in kg ( lb )
- Kerb weight ( with full tallk oj fuel ) . . . . . . . . . .
- Weight on
front axle ...............................................
- Weight on rear axle ................................................
- G.V.W. ( Gross Vehicle Weight, all optional
ecpiip777ei7t i77cluded )
..............................................
- Maximum authorised weight on front axle ..........
- Maximum authorised weight on rear axle ............
I G.T.W. ( Gross Train
Weight )
..............................
Towing : ( Weights in kg ( lb ) cx 2000
1265 ( 2789
) 1285
( 2833 )
845
( 1863 ) 860
( 1896)
420 ( 926
1 425
( 937 1
1740 ( 3836
) 1760 ( 3880 )
1020 ( 2249 ) 1020 ( 2249 )
750 ( 1653 ) 750 ( 1653)
2370 ( 5225
) I i77cI77rfi77!: n Ir.oiler 2405 ( 5302 )
( i/7t/ur/i77g
rc,i/hou/ brnkes cc,eighiug 630 kg o trc7ilcr rt~ithou t brakes
( 1389 Ihs ) rc~ei$iu~ 645 kg ( 1422 Ibs)
n) Vehicles equipped with a single electric cooli,f,c /c[i7 :
”
Maximum trailer weight ( gradient of 1 h 10 ) .__._..,...__,_____............
- Maximum
weight for bailer without brakes _.., .__._. ,. _._..,.,_..,__.._...... . . . . . . . . . . . .
b)
Vehicles equipped with tu& electric cooling /ans :
-
Gross Train. Weight ( zc:ith 1300 kg ( 2866 lb ) trailer with brakes ) .....-.’
- Maximum authorised trailer weight (within limits o/ C. 7‘. W’. ) ~..~~...~.....~~~
- Maximum starting gradient ( at G. ‘f. IV, )
_______.._....._...,.................................
cx 2200
cx 2000
900 ( 1984 )
630 ( 1389 )
3040 ( 6702.)
1500 ( 3307)
1 in8 l/3
- cx 2200
900 ( 1984)
645 (,I422 )
3060 ( 6746 )
1500 ( 3307 )
1 in8 l/3
IMPORTANT NOTE : Referehces to trailers without brakes DO NOT APPLY in U.K.
III.GENERAL INFORMATION
Capacities :
- Fuel tank
. . .._....__........................................................................................... 68 litres ( 15 galls )
- Cooling system
(including beater unit ) 16 dm2 ( 248 sq.in ) radiator 11 litres ( 19.3 pts )
20 dm2 ( 310 sq..in ) radiator 10.6 litres ( 18.6 pts )
- Heater unit alone :
i . . ..___.___.._.._.._..........................,..,.,..................................... Cl.6 litres ( 1.05 pt )
- Engine oil :
- After Oil Change _......_._.,_....,..,....,.......,....,................~.,.........................,
4.650 litres ( 8.2 pts )
w
Difference between Min and Max on dipstick 1.1 litre ( 1.9 pts )
- Hydraulic system ( Approx ) 4 litres ( 7 pts )
- Gearbox
a) ‘11 mud ~earlmx :
- Overall capacity ( TOTAL EP 80 ) _.__.__._..._..._._................................... 1 .6 litres ( 2.8 pts )
w
Difference between Min and Max on dipstick . . . . . . . . . . . . . . . . . .._................... 0.150 litres ( a.26 pts )
b) Ccarbos with
/orque: con7jerter :
- Overall capacity ( TOTAL Fluide T ) . ..__.,_.____________....,.,....,....,,.......... 5.5 litres ( 9.7 pts )
- After Oil Change . . 2 to 3 litres ( 3 l/2 to 5.2 pts )
( according to draining time )
v
Difference between Min and Max on dipstick (with oil
cold ) .0..150 litres ( 0.26 pts )
- Usable volume of boot
325 dm3 ( 11.48 cu. ft ) . . . . . . . . . . . . . . . . . .._................................................................

Downloaded from www.Manualslib.com manuals search engine 6 OPERATION No MA. 000 : Gezcral characteristics :
Weights : ( in kg ( Ib ) )
- Kerb weight ( with full tank of fuel ) ................................................................................
1385 ( 3053 )
- Weight on front axle ............................................................................................................. 880 ( 1940 1
- Weight on rear axle ..............................................................................
, ...................... ., ...... 505 ( 1113 )
- Gross Vehicle Weight ( including all optional equipment ) ............................................
2070 ( 4564 )
- Maximum authorised weight on front axle .......................................................................
1050 ( 2315 )
- Maximum authorised weight on rear axle ........................................................................
1030 ( 2271 )
- Gross Train Weight with 690 kg ( 1521 Ib ) trailer without brales .................................. 2700 ( 5952 )
Towing :
- Maximum authorised trailer weight ( gradient of 1 in 10 ) :
. a)u Standard D riehicle ......................................................................................................... 900 ( 1984 )
b) Vehicle equipped with twin electric cooling fans ........................................................ 1300 ( 2866 )
- Gross Train Weight with a 1300 kg ( 2866 lb ) trailer with brakes ................................
3370 ( 7429 )
- Maximum authorised trailer weiqht, within limits of G.T.W. .............................................
1500 ( 3307 )
- Maximum starting gradient ( at G. T. It’. ).
.............................................................. ..~ ................ 1 in 9 ( 11 % )
IMPORTANT NOTE : References to trailers without brakes bc) NOT APPLY in U.K.
III. GENERAL INFORMATION
Capacities :
- Fuel tank .._......................................,............................................................... : . . . . . 68 litres ( 15 galls )
- Cooling system ( Heater unit included) ( 20 dm2 - 310 sq.in ) . . . . . .
10.6 litres ( 18.6 pts )
- Heater unit alone . . . . . . . . . . . .
0.6 litres ( 1.05 pts )
- Engine oil :
- after draining * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.650 litres ( 8..2 pts )
- difference between Min and Max on dipstick . . . . . . . . . . . . . . . . .
1.1 litres ( 1.9 pts )
- Hydraulic system ( approx ) . . . . . . . . . . . . . . . . . . . . . .
4 litres ( 7 pts )
- Gearbox :
- after draining . .._._._......................................................... :.................................... 1.6 litres ( 2.8 pts )
- difference between Min and
Max on dipstick . . . . . . . . . . . . . :.
0.150 litres ( 6.26 pts )
- Boot volume :
- with rear seat in position ................................................................................. 1100 dm3 ( 38.85 cu.ft )
- with rear seat folded .......................................................................................... 2030 dm3 ( 71.70 cu.ft )

Downloaded from www.Manualslib.com manuals search engine 8 OPERATION No MA. 000 : G~v2~~rnl characteristics
Weights in kg ( Jb ) :
- Kerb weight ( with /hll fmk oipc~trol ) :
.............................................................. 1450 (3197 )
- Weight on the front axle .... .._
.................................................................................... 970 ( 2138 )
- Weight on the rear axle ..................................
.....................................................
480 ( 1058 )
- Gross Vehicle Weight ( inclr~cli22~ all optimaal eq~ipmm f )
.............................. 1890 ( 4167 )
- Maximum authorised weight on front axle
.............................................. . ............. lllO( 2447 )
- Maximum authorised weight on rear axle ............................................................... 790 ( 1742
- Gross Train Weight
( with ~2 1300 kg ( 2866 lb 1 frailer u'ith hmkes I ................ 3190 ( 7033 ) III. GENERAL INFORMATION :
Capacities :
- Fuel tank . . . .._._.............., .._.._._. . .._...__................................ ._................,...... 68 litres ( 15 galls )
- Cooling system (i22cludi22g hcc?ter ul2it 1 :
- Manual gearbox ( 20 dm2 - 310 sq.in. radiator ) . . .._.....................
10.6 litres ( 18.6 pts )
m
Torque converter gearbox ( 23 dm2 - 356 sq.in. radiator ) . 12.5 litres (22 pts )
- Heater unit alone _, :. I.
0.6 litres ( 1.05 pts )
- Engine oil :
- after draining . . .._._._......._._........................................................-..........
4.650 litres ( 8.2 pts )
.. difference between Min and Max. ,.n dipstick 1 .l litres ( 1.9 pts )
- Hydraulic system ( approx. ) .._._..._.__.._._._...,,..,........,.,......................................
4 litres (
7 pts 1
- Gearbox :
a) ~Z~UI/I~U/ gcarho.~ ( TOTAL EP 80 ) _,.,__.___.,.,_._....,,,...................,...........,. 1.600 litres ( 2.8 pts )
- difference between Min. and Max. on dipstick . . . . . . . . . ..__...................
0.150 litres ( 0.26 pts )
h)
Torque corztwrter gcarhox ( TOTAL FLUIDE T ) ._.___._...,,___.._....,...,.....,., 5.5 litres
- after draining
_ 2 to 3 litres ( 3.5 to 5.3 pts )
(qccording to draining time)
- difference between Min. and Max. on dipstick
(with rhc oil cold) . . . . .’ 0.150 litres ( 0.26 ‘pts )
w Usable volume of boot ..___._._.......___................,.............,.............,.......,.,.....,............ 325 dm3 - 11.48 cu.ft.

Downloaded from www.Manualslib.com manuals search engine 10 OPERATION No MA. 000 : (;vt/c~ra/ chorac/vris/ics
Weights in kg ( lb )
- Kerb weight I wit/~ iLlI /m/k. oi !IIVI )
.......................................................................
- Weight on the front axle .......................
........................ ........... .......................
- Weight on the rear axle ......................... ....................................................................
- Gross Vehicle Weight
....... ...........................................................................
........... 1300 ( 2866 )
870 ( 1918 )
430 ( 948 )
1790 ( 3946 )
- Maximum authorised weight on the fr-ont axle . . . . . . . . . . . . . . . . . . . . . . . . . . .._..._..._._......._._._....._..._.. 1050 ( 2315 )
- Maximum authorised weight on the rear axle
. . . . . . . . . ..~.. . . . . . . . . . . . . . . . 750 ( 1653 )
- Gross Train Weight (with a 1300 kg ( 2866 lb ) trailer ) . . . . . . . . .
3090 ( 6812 )
- Gross Train Weight ( with a 650 kg ( 1433 lb ) trailer without brakes ) . . . . 2440 ( 5379 )
Towing :
- Maximum weight of trailer without brakes
..... __ ......................................................... 650 ( 1433 )
- Maximum weight of trailer ( within G.T.W. limit of 3090 kg ( 6812 lb ) .....................
1500 ( 3307 )
- Maximum starting gradient ( at G.T.W. ) ..................................................... ..............
12% (1 in8 l/2)
NOTE For towing a trailer heavier than 900 kg ( 1984 lb ). ‘t . 1 1s necessary to fit a second lo-blade electric
cooling fan.
IMPORTANT NOTE : References to trailers without brakes DO NOT APPLY in U.K.
III. GENERAL INFORMATION
Capacities :
- Fuel tank .__._.___..._....__..__...,.._.,.....__________.___.___.___.__.__.__._...................,..... : ._.___.____._. 68 litres ( 15 galls )
- Cooling system f
itfcltrrlivg hcatcr rirlil ) :
- Manual or torque converter gearbox .._..._..__._._,.._..._._.. _..._._._......._......._._._...... 10.6 litres ( 18.6 pts )
- Optional torque converter t air-conditioning unit .._...............................
12.5 litres ( 22 pts )
- Heater unit alone _. _..._._._..,_ _..._.........,....._._._....__.___......... ._. _._._._._....._., .,,._......._. 0.6 litres ( 1.05 pts )
- Engine oil :
- after draining
_..,.._._._....___..._.__....................._._._..._..._....._..._._._................... 4.650 litres (8.2 pts )
- difference between Min. and Max. on dipstick 1.1 litres ( 1.9 pts )
- Hydraulic system ( approx ) _....,_._.__.._._.........,..._..._._.___._......._._._._._._._..................... 4 litres ( 7 pts )
- Gearbox :
_ Overall cspacity ( TOTAL EP 80 ) . . . . . .._.... .._._._..._._._....._._._..._..._... 1.600 litres ( 2.8 pts )
- Difference between Min. and Max. on dipstick . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.150 litres ( 0.26 pts )
h) Torque con7~c~rter grarbos :
- Overall capacity ( TOTAL FLUIDE T ) _._._._._.,_...._........_.._.................... 5.5 litres ( 9.7 pts )
- After draining _._,_,_,_.,._.._......_._._._._._._..._..._._._._..._._..__._..._._..................... 2 to 3 litres ( 3.5 to 5.3 pts )
according to draining time
- Difference between Min. and Max. on dipstick (r!,ith
the oil cold) _._,...... 0.150 litres ( 0.26 pts )
-Usable volume of boot .~...............,.........,,............................................. . . 325 dm3 ( 11.48 cu.ft )

Downloaded from www.Manualslib.com manuals search engine 12 OPERATION No MA. 000: Gcvc,d chnmcteristics _.
Weights in kg ( lb )
- Kerb weight ( with full tar/k of ihd ) _
. . . . . . . . . . . . . . .._..............__._._......._._..__.___....._._..._....... 1405 ( 3097 )
- Weight on front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 ( 1984 )
- Weight on rear axle .._. .._._.... .._. .._.................
505 ( 1113 )
- Gross Vehicle Weiqht
(i~~rl~lrlir~g ctll optinnnl c,quipv/<,t/t ) . . . . . . .._................................. 2095 ( 4619 )
- Maximum authorised weight on front axle . . . . . . _..._._............._..__......._......._._._._.,.,.,..._....... 1075 ( 2370 )
- Maximum authorised weight on rear axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..__._........ 1030 ( 2271 )
- Gross Train Weight ( with a 700 kg ( 1543 lb ) trailer without brakes ) .” ~~.....~....~.~~...~
2795 (6162 )
Towing :
- Maximum trailer weight ( gradient of 1 in 10 )
cl) K Stmclurd )) twhic-le ._..... . . .._..._..._._......,.._...._.._.,.,............,...._....._._....,,...................,.... 900 ( 1984 )
b ) Vchiclc jittcil with n second IO-hladc clcctric cooli7lg /atI ................. ................
1300 ( 2866)
- Gross Train Weight with a 1300 kg ( 2866 lb ) trailer with brakes ............................. 3395 ( 7485 )
- Maximum trailer weight within limit of G.T.W. ( 3395 kg - 7485 lb ) .............................
1500 ( 3307 )
- Maximum starting gradient .C at.G. T. W. J ........................................................................ llS(lin9)
IMPORTANT NOTE : References to trailer without brakes DO NOT APPLY in U.K. III. GENERAL lNFORMATlOt!4
Capacities :
- Fuel tank __ .,.,........._._______...__.____._.,.,..._,_._..,._..._._.._._..._.........................................
- Cooling system ( itzcludivg heater fluit ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Heater unit alone _. ,.,, ., ,. ,,....__. ._._.._.._.__..._. __...........................
- Engine oil :
- after draining . _._.,.......___.._.____..__..._._._....._...................................................
- difference between Min. and
Max. on dipstick . . . . . . . . . . . . . . . . . . .
- Hydraulic system ( approx ) _....,.,,......._.___..._.._.._.............................................
- Gearbox :
- after draining . . .._..._......,,_,....._...._...._._._................................ _.....,.,.........
- difference between Min. and Max. on dipstick _.._,.............,....._._._._._......._.,
- Volume of boot :
- with rear seat in position ............................................................................
- with rear seat folded back ......................................................................... 68 litres ( 15 galls )
16.6 litres ( 18.6 pts )
0,6 litres ( 1.05 pts )
4.650 litres ( 8.2 pts )
1.1 litres ( 1.9 pts )
4 litres ( 7 pts )
1.6 litres ( 2.8 pts )
0.150 litres (0.26 pts )
1100 dm3 ( 38.85cu.ft )
2030 dm3 ( 71.70cu.ft )

Downloaded from www.Manualslib.com manuals search engine 14 OPERATION No MA. 000 : G<,ncraZ charactc,ristics Weights in kg ( lb ) :
- Kerb weight ( with jull Iauk of fill ) ....................... . ............................................................................ 1345 ( 2965 )
- Weight on front axle ........... .................................................................................................................... 910 ( 2006 )
Weight on rear axle ........................................................................................................................ 435 ( 959 )
- Gross Vehicle Weight ( ir~cludiug all mp/inual ~~quipmwt ) ....................................................... 1810 ( 3990 )
- Maximum authorised weight on front axle ................................................................................... .
1075 (2370 )
- Maximum authorised weight on rear axle .................................................. ..~...............~ .............. 750 ( 1653 )
- Gross Train Weight with a 670 kg ( 1477 lb ) trailer without brakes ) ..........................................
2480 ( 5467 ) Towing :
- Maximum weight of trailer ( on gradient of 1 in 10 ) :
a) s StaiJdard )) r,ehiclc ................................................................................................................ 900 ( 1984 )
h) Vchicfe equipped with a second IO-blade cooling jar? ....................................................... 1300 ( 2866 )
- Gross Train Weight with a 1300 kg ( 2866 lb ) trailer with brakes ............................................ 3110 ( 6856 )
- ‘Max. trailer weight within limit of G.T.W. ( 3110 kg - 6856 lb ) .................... . ............................. 1500 ( 3307 )
- Max. starting gradient ( at G. 7‘. W. I) .......................................................................................... 12 % ( 1 in 8 l/2) I1.l.. GENERAL INFORMATION
Copoci;ies :
- Fuel tank .._.___._._._._.’ __.._._._..._....._._._,_..,._.,_..._..,_,._...._,___....___._______.............,.,.... 68 litres ( 15 galls )
- Cooling system ( ilzcluding heater unit,) __...._.___,_.__.....,....._._.___..___._._____..._._._. 12.3 litres ( 21.6 pts )
- Heater unit alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._ . . . . . . . . . .
0.6 litres ( 1.05 pts )
- Engine oil :
- after draining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.650 litres ( 8.2 pts )
- difference between Min. and Max. on dipstick .._._........._.___.,._.____.__.__._.. 1 .l litres ( 1.9 pts )
- Hydraulic system ( approx ) : .._.__.,_,...,._...,.....,..........,..............................,...... 4 litres ( 7 pts ) - Gearbox :
- after draining
. . . ..__._....__._......._......................_......._.__________._._____.............. 1.6 litres ( 2.8 pts )
- difference between Min. and Max. on dipstick . . . . . . . . . . .._..._..._..____......... 0.150 litres ( 0.26 pts )
- Usable volume of rear boot .__..____.___._____..__._____._.________.._....,...,,.._._.,......__..__........ 325 dm3 ( 11..48 cu.ft )

Downloaded from www.Manualslib.com manuals search engine 16
OPERATION No MA. 000 : ( rc,rlc,rNI cJ7nrncIerislic.s
Interior dimensions of the driver’s compartment :
I Distance between windscreen and separatinq panels . . . . . .
1 330 m ( 4 ft. 4 l/4 ins )
Width at elbow heiqht . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._........ ,.....,............., _._._....._..
1.400 m ( 4 ft. 7 ins )
Interior dimensions of patient comportment :.
- Distance between separatinq panel and rear window (at stretcher heiqht ) .._..._.. 2.180 m ( 7 ft. 1 3/4 ins )
_ Width between rear side doors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _._.. 1.400 m ( 4 ft. 7 ins )
_ Width of floor between rear wheelarches _.... 1.120 m ( 3 ft. 8 ins )
- Height between floor and roof
- at the front .._.._....,.......,..,,,,,,..,.,._..._.. _....................................... 1.420 m ( 4 ft. 8 ins )
- at the rear . . .._....._..__..._._._.......... .._.. .._._._.. 1.175 m ( 3 ft. 10 l/4 ins)
Weights in kg ( lb ) :
- Kerb weight ................................................................................................... 1530 ( 3373 )
- Weight on front axle
..................... ............................................... ...................... 925 ( 2039 )
- Weight on rear axle
.... 605 ( 1334 )
- Gross Vehicle Weight ( G.V.W. ) ........................................................................... 2095 ( 4619 )
- Maximum authorised weight on front axle ........................................................ 1075 ( 2370 )
- Maximum authorised weight on rear axle ‘1030 ( 2271 ) ...........................................................
111. GENERAL INFORMATION
Capacities :
- Fuel tank ............................................................................................................ 68 litres ( 15 galls )
- Cooling system ( including the heater units ) ....................................................... 11.8 litres ( 20.8 pts )
- Heater unit for driver compartment alone .............................................................. 0.6 litres ( 1.05 pts )
- Auxiliary heater unit for patient compartment ................................................... 1.6 litres ( 2.8 pts )
- Engine oil
- after draining ................................................................................................ 4.650 litres ( 8.2 pts )
- difference between Min. and Max. on dipstick ...................... . .......................
i.i litres ( 1.9 pts )
- tiydraulic system ( approx. )
.......... . ..................................................................... 4 litres ( 7 pts )
- Gearbox :
- after draining ............................................................................................... 1.6 litres ( 2.8 pts )
-difference between Min. and Max. on dipstick
.............................................. 0.150 litres ( 0.26 pts )

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 6
OPERATION No MA.IE. 144 - 00 : Churacteristics o/ the H L-Jetronic )) electronic
/uel injectian .system. FUEL CIRCUIT
A multiple roller-valve pump ( 2 ) draws the fuel from tank ( 1) and provides the injection pressure,
A filter (4) is fitted to the system.
In the fuel return pipe, the pressure regulator ( 3) maintains, under fuel load! a relative constant fuel pressure of
2 bars ( 29 ‘psi ).
The pressure regulator is connected to the intake manifold by a flexible pipe0 This allows the difference of
pressure betw.een the fuel and the inlet manifold to remain constant.Thus the necessary quantity of fuel delivered
by the injectors ( 5) depends exclusively on its duration of opening.

Downloaded from www.Manualslib.com manuals search engine ELECTRIC PETROL PUMP
The petrol pump is of the multi roller-vane type, driven by an electric motor which is energized as long as the
ignition is switched on. The rotor, which is fitted eccentrically in the pump housing, has metal roller vanes in
grooves around t.he periphery which, when they are forced outwards under the action of the centrifugal force, ensure
the system-is sealed.
Fuel is drawn into the cavities which,appear in between the roller-vanes, and is then forced into the injection
piping.
The electric motor is submerged’ in fuel. However, there .is no fire risk, since there is never any combustible
mixture in the pump housing. The pump supplies more fuel than the engine consumes under full load, so that
there is always sufficient pressure in the fuel system, whatever the engine speed. Excess fuel flows back to
the tank.
Once the ignition is on, the pump operates at the same time as the starter motor. Once the engine is running, the
airflow sensor energizes the pump.
Thanks to this type of.system, if an injector is faulty ( leaks ) the cylinder in question cannot be flooded if one
has ommitted to switch the ignition off. PETROL FILTER (1) :
A fuel filter, fitted between the pump and the injectors, prevents any impurities from reaching the injectors. PETROL PRESSURE REGULATOR ( 2 ) :
The fuel pressure is maintained constant by the pressure regulator. It comprises a metal housing
is a diaphragm., One side of the dipphragm.is subjected to the fuel under pressure, and the other 2
to the action of a calibrated spring. inside which
side is subjected
When the fuel pressure is in excess of 2 bars ( 29 psi ), the diaphragm lifts and allows fuel to flow back to the
tank.
The pressure provided by the regulator is pre-adjusted at the factory. The chamber on the side of the spring is
connected via a flexible pipe to the inlet manifold. Therefore, the difference between the pressure in the inlet
manifold and that of the fuel is maintained constant.
For any engine load, the drop in pressure at the injectors is therefore the same.